2001/02 general motors lssv military vehicles service manual

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2001/02
GENERAL MOTORS LSSV MILITARY
VEHICLES
SERVICE MANUAL SUPPLEMENT
Preface
Preface 1
Preface
Caution
Caution: To reduce the chance of personal injury and/or property damage, carefully observe the instructions
that follow:
The service manuals of General Motors Corporation are intended for use by professional, qualified technicians.
Attempting repairs or service without the appropriate training, tools, and equipment could cause injury to you
or others. This could also damage the vehicle, or cause the vehicle to operate improperly.
Proper vehicle service and repair are important to the safety of the service technician and to the safe, reliable
operation of all motor vehicles. If you need to replace a part, use the same part number or an equivalent part.
Do not use a replacement part of lesser quality.
The service procedures we recommend and describe in this service manual are effective methods of
performing service and repair. Some of the procedures require the use of tools that are designed for specific
purposes.
Accordingly, any person who intends to use a replacement part, a service procedure, or a tool that is not
recommended by General Motors, must first establish that there is no jeopardy to personal safety or to the safe
operation of the vehicle.
This manual contains various “Cautions” and “Notices” that you must observe carefully to reduce the risk of
personal injury during service or repair. Improper service or repair may damage the vehicle or render the
vehicle unsafe. For Cautions and Notices, refer to 2001/02 C/K Truck Service Manual. These “Cautions” and
“Notices” are not exhaustive. General Motors cannot possibly warn of all potentially hazardous consequences
of your failure to follow these instructions.
This manual covers service procedures to vehicles that are equipped with a Supplemental Inflatable Restraint
(SIR). Refer to the “Cautions” in Cautions and Notices and in Restraints. Refer to SIR component and wiring
location views in Restraints before performing a service on or around SIR components or wiring. Failure to
follow these “Cautions” could cause air bag deployment, personal injury, or otherwise unneeded SIR repairs.
In order to help avoid accidental air bag deployment and personal injury, whenever you service a vehicle that
requires repair of the SIR and another vehicle system, we recommend that you first repair the SIR, then go on
to the other system.
Preface 2
Preface
BLANK
Preface
Preface 3
2001/02 General Motors LSSV
Military Vehicles Service Manual
Supplement
This manual provides information on the diagnosis, the service procedures, the adjustments, and the specifications for
the 2001/02 GM LSSV Base Pickup, Crewcab, Extended Cab, Tahoe, Suburban and Chassis Cab.
Information on transmission unit repair (overhaul) can be found in the 2001/02 Transmission/Transaxle/Transfer Case
Unit Repair Manual (TURM), available separately. The TURM contains information on automatic and manual
transmissions and transaxles including the fluid flow and circuit description information.
The technicians who understand the material in this manual and in the appropriate Dealer Service Bulletins better
service the vehicle owners.
When this manual refers to a brand name, a part number, or a specific tool, you may use an equivalent product in place
of the recommended item. All information, illustrations and specifications in this manual are based on the latest product
information available at the time of publication approval. General Motors reserves the right to make changes at any
time without notice.
Published by
GM DEFENSE MILITARY TRUCKS
General Motors Corporation
Troy, Michigan 48083
©2001 GENERAL MOTORS CORPORATION
ALL RIGHTS RESERVED
The information cutoff date is February 15, 2002
LITHO IN U.S.A.
PART NO. TXO 17817
No part of this manual may be reproduced, stored in any retrieval system, or transmitted in any form or by any means
(including but not limited to electronic, mechanical, photocopying, and recording) without the prior written permission of
General Motors Corporation. This applies to all text, illustrations and tables.
Preface 4
Preface
Reporting Errors and Suggestions
If you find an error with this GM service manual supplement, or if you have a suggestion about this GM service manual
supplement, we want to hear from you.
When calling, be prepared with the following information:
•
Your name
•
Your dealership’s name/Military organization
•
Your dealership’s/Military organization’s phone number
•
The model year and the vehicle line
•
The publication part number (if present)
•
The vehicle identification number of the vehicle being worked on
•
The service manual section and page number(s)
•
Any applicable electronic information element identification numbers
•
A descriptive explanation of your concern
The GM service manual phone personnel will respond to your concerns in the following ways:
•
By delivering your concern to the manual’s author
•
By eliciting a response from the author
•
By supplying you with an answer to your concerns
For paper manual users: The GM service manual phone personnel will also explain how to send in examples or
marked-up pages.
The GM service manual comment telephone numbers do not provide technical assistance. For technical assistance,
contact your regular technical assistance source.
United States
Please call the following number Monday through Friday with your comments: 1-248-680-2843,
fax number 248-680-5275.
United States Owner/Operator
Vehicle owners or operators are encouraged to address their comments and concerns to the applicable Customer
Assistance Center. The phone number and address of the Customer Assistance Center are in the Owner's Manual.
General Motors Defense Military Trucks
Contact Information
Mailing Address:
GM Defense
Military Trucks
MC: 483-619-114
1996 Technology Drive
Troy, MI 48083
Department
Phone Number
General Information
1-248-680-5214
Military Service Parts Assistance
1-248-680-5222
Technical/Warranty Assistance
1-248-680-2843
Vehicle Sales
1-248-680-5222
Preface
Preface 5
2001/02 SERVICE MANUAL SUPPLEMENT COMMENT FORM
Use this form to advise us of any errors you might find in this manual. We also welcome suggestions for
improving this Service Manual Supplement.
Service Manual(s) that have the error ____________________________________________________________
Page number(s) that have the error _____________________________________________________________
Graphic number(s) that have the error ___________________________________________________________
VIN (if available) or model and applicable options___________________________________________________
Describe in detail, the error found or the suggestion(s). Attach additional pages if necessary.
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
From:
Dealer/Military Organization Name _____________________ Dealer Code _______________
City/Town_________________________________________ State _____________________
Name of Person Submitting This Comment Form ____________________________________
Signature _________________________________________ Date _____________________
Mail To:
GM Defense
Military Trucks
Mail Code: 483-619-114
1996 Technology Drive
Troy, MI 48083
USA
Attention: ILS Manager
Table of Contents
Table of Contents 1
Table of Contents
Preface
General Information
General Information.................................................0-3
Maintenance and Lubrication ..................................0-7
Suspension
Front Suspension ....................................................3-3
Rear Suspension.....................................................3-7
Tires and Wheels ................................................. 3-10
Driveline/Axle
Wheel Drive Shafts..................................................4-3
Front Drive Axle.................................................... 4-10
Rear Drive Axle .................................................... 4-12
Transfer Case....................................................... 4-14
Body and Accessories
Wiring Systems ....................................................... 8-3
Lighting Systems .................................................. 8-40
Instrument Panel, Gages and Console................. 8-84
Horns .................................................................... 8-89
Exterior Trim ......................................................... 8-95
Bumpers................................................................ 8-99
Body Front End ................................................... 8-117
Seats................................................................... 8-122
Interior Trim......................................................... 8-125
Body Rear End.................................................... 8-150
Paint/Coatings..................................................... 8-161
Frame and Underbody........................................ 8-162
INDEX ............................................................. INDEX-1
Engine
Engine Electrical......................................................6-3
2001/02 LSSV Truck
General Information
Table of Contents 0-1
Section 0
General Information
General Information...................................0-3
Maintenance and Lubrication ...................0-7
Vehicle Identification ............................................0-3
Military Equipment Options..................................0-5
2001/02 Commercial Utility/Cargo Vehicle
LSSV Specifications/Options...............................0-5
Labels .....................................................................0-6
Maintenance .......................................................... 0-7
Owner Checks and Services............................... 0-7
Periodic Maintenance Inspection ........................ 0-7
2001/02 LSSV Truck
0-2 Table of Contents
General Information
BLANK
2001/02 LSSV Truck
General Information
General Information
General Information 0-3
Tahoe
Vehicle Identification
The 2001/02 LSSV series military pickup, Tahoe,
Suburban and ambulance models derive from standard
commercial vehicles. The utility is a 1500 Tahoe and
2500 Suburban based military command vehicles. The
pickup is a 2500HD, or “1-ton” based cargo troop
carrier. The pickup chassis is also used for the
ambulance.
All vehicles have rugged designs intended for all types
of roads or infrequent off-road travel. They can ford
water obstacles for three minutes without stalling at
depths of 51 cm (20 in) at 8 kph (5 mph). These limits
are met without causing permanent damage or
requiring immediate maintenance.
Base Cargo/Troop Carrier
Suburban
Extended Cab
Crewcab Cargo/Troop Carrier
2001/02 LSSV Truck
0-4 General Information
Ambulance
The pickup vehicles are equipped with a 6.6L Turbo
diesel engine with a 5-speed Allison automatic
transmission and 2-speed transfer case. The vehicles
have pintle hooks with a max trailer weight (on
highway) of 12,000 lbs (5443 kg). Payload capacity is
3,200 lbs (1454 kg) for the pickup vehicle.
The Tahoe vehicle is equipped with a 5.3L gasoline
engine with a 4-speed 4L60-E automatic transmission
and a 2-speed transfer case. The vehicles have a
pintle hook with a max trailer weight (on highway) of
8,700 lbs (3946 kg). Payload capacity is 1,532 lbs (696
kg), varies with equipment.
The Suburban vehicle is equipped with a 6.0L gasoline
engine with a 4-speed 4L80-E automatic transmission
and 2-speed transfer case. The vehicles have a pintle
hook with a max trailer weight (on highway) of 10,000
lbs (4536 kg). Payload capacity is 2,840 lbs (1291kg),
varies with equipment.
Each vehicle is equipped with heavy duty shocks front
and rear, 4-wheel anti-lock brakes, a locking
differential, on-off road tires, front and rear clevis/tiedowns and blackout lighting.
A slave receptacle is mounted on the front of the
vehicles, protected by a radiator brush guard.
The pickup has a cargo cover and troop seating for up
to eight or a hard cap with opening windows, all pickup
vehicles have cargo hooks mounted on the bed floor. A
specially upgraded electrical system can handle 24V
communications equipment and charging of the 24V
batteries.
2001/02 LSSV Truck
General Information
General Information
General Information 0-5
Military Equipment Options
2001/02 Commercial Utility/Cargo Vehicle LSSV Specifications/Options
Your vehicle may be equipped with any combination of options.
Description
12V/24V Power Converter
Blackout Lighting
NATO Slave Start
Brush Guard
Front Clevis/Tie-Downs
Rear Clevis/Tie-Downs
Pintle Hook
Trailer Light Connection
M14/M16 Weapons Mount
Transmission/Transfer Case/Differential Vent Filter
Government Data Plate
Cargo Area Troop Seats
Cargo Tie-Downs
Cargo Cover (Soft-Top)
Combination Front or Rear Mounted Winch with Remote Control (Multi-mount) 9,000 lb
capacity
Engine-Mounted High Output Auxiliary Air Compressor (70 CFM @ 150 psi)
Run-Flat Tires
Continuous Output 5,000 W AC/DC Generator
On-Star® Communications Package
Cargo Locking Side/Rear Access Cap
Pioneer Tool Kit
Permanent Front Mount Winch 12,000 lb capacity
Military Rear Receiver Hitch
Factory Rear Receiver Hitch
2001/02 LSSV Truck
0-6 General Information
General Information
Equalizer Label
Labels
24V Battery Caution Label
The 24V battery caution label is placed on top of the
24V battery. This battery is on the left side of the
engine compartment.
Winch Warning Label
The winch warning label is fixed to the winch cable
hook.
2001/02 LSSV Truck
The equalizer label is located on the side of the
equalizer. This label includes information on model
number, serial number and voltage specifications.
Owner/User’s Label
The owner/user’s label is located in the glove
compartment and has information pertaining to the
vehicle’s upfitting. Refer to Paint Codes in
Paint/Coatings for current exterior paint part numbers.
General Information
Maintenance and
Lubrication
Maintenance and Lubrication 0-7
•
Inspect the axle vent tube filter for blockages
every six months and more often when difficult
off-road conditions are encountered. Replace
as needed.
Refer to the Front or Rear Axle Vent Tube Filter
Replacement procedure in Driveline/Axle.
•
Inspect the transmission/transfer case vent tube
filter for blockages every six months and more
often when difficult off-road conditions are
encountered. Replace as needed.
Refer to Transmission/Transfer Case Vent Tube
Filter Replacement Procedure in Driveline/Axle.
•
Winch Maintenance. Refer to Warn Industries
Operator’s Manual found in glove compartment.
Maintenance
Owner Checks and Services
If the engine, controls, instruments or gages do not
operate as described in this supplement manual, refer
to one of the following manuals:
•
2001/02 C/K Truck Owner’s Manual
•
2001/02 C/K Truck Service Manual
•
2001/02 Diesel Engine Owner’s Manual
Supplement
If the concern still has not been corrected, shut down
the engine and notify your military maintenance unit.
Periodic Maintenance Inspection
•
Inspect the condition of the headlamps,
taillamps, turn signals, side lamps, and blackout
lamps, before beginning to operate the vehicle
each time.
2001/02 LSSV Truck
Suspension
Table of Contents 3-1
Section 3
Suspension
Front Suspension ......................................3-3
Specifications ........................................................3-3
Repair Instructions................................................3-4
Shock Absorber Replacement.............................3-4
Description and Operation ...................................3-6
Front Shock Absorber Description.......................3-6
Rear Suspension .......................................3-7
Specifications ........................................................3-7
Repair Instructions................................................3-8
Shock Absorber Replacement ............................ 3-8
Description and Operation................................... 3-9
Rear Shock Absorber Description....................... 3-9
Tires and Wheels .....................................3-10
Repair Instructions ............................................. 3-10
Tire Hoist Shaft Extension Replacement .......... 3-10
Description and Operation................................. 3-11
Tires and Wheels .............................................. 3-11
2001/02 LSSV Truck
3-2 Table of Contents
Suspension
BLANK
2001/02 LSSV Truck
Suspension
Front Suspension 3-3
Front Suspension
Specifications
Fastener Tightening Specifications
Specification
Application
Metric
English
Shock Absorber Bolt
80 N•m
59 lb ft
Shock Absorber Tennon Nut
20 N•m
15 lb ft
2001/02 LSSV Truck
3-4 Front Suspension
Suspension
Repair Instructions
Shock Absorber Replacement
Removal Procedure
Caution: Refer to Vehicle Lifting Caution in Cautions and
Notices.
Notice: The front shock absorbers of the vehicle are
multifunctional. In addition to contributing to a smooth ride they
also provide the only stop to the front suspension when fully
extended. Therefore, when servicing the shock absorber,
service replacement shock absorbers must be equivalent to
original shock absorbers in both extended length and strength.
Use of shocks not complying to original equipment or strength
could result in suspension over-travel or shock breakage.
Suspension over-travel may result in suspension component
breakage.
1. Raise and support the vehicle.
2. Support the lower control arm with a jack stand.
3. Hold the tennon end with a wrench while removing the
nut.
4. Remove the nut.
5. Remove the upper insulator (1).
2001/02 LSSV Truck
Suspension
Front Suspension 3-5
6. Remove the shock absorber mounting bolt (2) and nut (3)
at the lower control arm.
7. Remove the shock absorber (1).
Installation Procedure
1. Install the shock absorber. Insert the stem through the
hole in the shock bracket on the frame.
2. Align the shock absorber with the mounting holes in the
lower control arm.
3. Install the shock absorber through bolt (2) to the lower
control arm and shock.
Notice: Refer to Fastener Notice in Cautions and Notices.
4. Install the shock absorber through bolt nut (3).
Tighten
Tighten the nut to 80 N•m (59 lb ft).
5. Install the upper insulator to the shock absorber.
6. Install the nut to the tennon end. Hand-tighten only.
7. Remove the safety stands.
8. Lower the vehicle.
9. Hold the tennon end with a wrench while torquing the nut.
Tighten
Tighten the nut to 20 N•m (15 lb ft).
2001/02 LSSV Truck
3-6 Front Suspension
Description and Operation
Front Shock Absorber Description
The suspension features a heavy duty shock absorber
package (if equipped) necessary for off-road conditions.
The replacement procedure is very similar to the
procedure for the standard truck.
2001/02 LSSV Truck
Suspension
Suspension
Rear Suspension 3-7
Rear Suspension
Specifications
Fastener Tightening Specifications
Specification
Application
Shock Absorber Nuts
Metric
English
95 N•m
70 lb ft
2001/02 LSSV Truck
3-8 Rear Suspension
Suspension
Repair Instructions
Shock Absorber Replacement
Removal Procedure
Caution: Refer to Vehicle Lifting Caution in Cautions and
Notices.
Notice: Original equipment shock absorbers serve additionally
as suspension drop cutoffs. Replacement shock absorbers must
have a built in suspension cutoff feature and must not be longer
than original shocks when they are fully extended or serious
vehicle or component damage could result.
1. Raise and support the vehicle.
2. Remove the upper shock absorber nut and bolt.
3. Remove the lower shock absorber nut and bolt.
4. Remove the shock absorber.
Installation Procedure
1. Install the shock absorber.
2. Install the upper shock absorber nut and bolt.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the lower shock absorber nut and bolt.
Tighten
Tighten the upper and lower nuts to 95 N•m (70 lb ft).
4. Remove the safety stands.
5. Lower the vehicle.
2001/02 LSSV Truck
Suspension
Rear Suspension 3-9
Description and Operation
Rear Shock Absorber Description
The suspension features a heavy duty shock absorber
package (if equipped) necessary for off-road conditions.
The replacement procedure is very similar to the
procedure for the standard truck.
2001/02 LSSV Truck
3-10 Tires and Wheels
Suspension
Tires and Wheels
Repair Instructions
Tire Hoist Shaft Extension Replacement
Removal Procedure
1. Remove the spare wheel storage lock cylinder. Refer to
vehicle 2001/02 C/K Truck Owner’s Manual.
2. Remove the spare tire. Refer to Spare Tire Removal in
the 2001/02 C/K Truck Service Manual.
3. Pull the retainer clip and remove the pin.
4. Remove the bar.
Installation Procedure
1. Install the new bar and align.
2. Install the retainer clip and pin.
3. Install the spare tire. Refer to Spare Tire Installation in
the 2001/02 C/K Truck Service Manual.
4. Install the spare wheel storage lock cylinder. Refer to
vehicle 2001/02 C/K Truck Owner’s Manual.
2001/02 LSSV Truck
Suspension
Tires and Wheels 3-11
Description and Operation
Tires and Wheels
Spare Wheel Hoist Shaft
The hoist shaft may require replacement (if damaged).
On pickup models, the spare tire is mounted under the
rear end of the pickup. On Utility models, the spare tire
is mounted under the rear of the vehicle.
Refer to Tire Hoist and Shaft Replacement in the
2001/02 C/K Truck Service Manual
2001/02 LSSV Truck
Driveline/Axle
Table of Contents 4-1
Section 4
Driveline/Axle
Wheel Drive Shafts ....................................4-3
Rear Drive Axle ........................................4-12
Repair Instructions................................................4-3
Wheel Drive Shafts Boot Cover Replacement.....4-3
Description and Operation ...................................4-8
Wheel Drive Shaft Boot Covers...........................4-8
Special Tools and Equipment ..............................4-9
Repair Instructions ............................................. 4-12
Rear Axle Vent Tube Filter Replacement ......... 4-12
Description and Operation................................. 4-13
Rear Axle Vent Tube Filter Description............. 4-13
Front Drive Axle .......................................4-10
Repair Instructions..............................................4-10
Front Axle Vent Tube Filter Replacement .........4-10
Description and Operation .................................4-11
Front Axle Vent Tube Filter Description.............4-11
Transfer Case ..........................................4-14
Repair Instructions ............................................. 4-14
Transmission/Transfer Case Vent Tube
Filter Replacement ............................................ 4-14
Description and Operation................................. 4-15
Transfer Case Vent Tube Filter Description...... 4-15
2001/02 LSSV Truck
4-2 Table of Contents
Driveline/Axle
BLANK
2001/02 LSSV Truck
Driveline/Axle
Wheel Drive Shafts 4-3
Wheel Drive Shafts
Repair Instructions
Wheel Drive Shafts Boot Cover
Replacement
Tools Required
J 41187 Band-it Type Tool
Disassembly Procedure
Important: Be careful when removing the clamps from the
halfshaft seal cover, if reusing the halfshaft seal cover.
1. Use side cutters to cut the halfshaft seal cover clamps (2)
and the nylon strap (1).
2. Slide the halfshaft seal cover (1) off of the halfshaft, over
the CV joint end.
3. Check the halfshaft seal cover (1) for rips, tears, worn
spots or other damage. Reuse the halfshaft seal cover (1)
if there is no damage visible.
2001/02 LSSV Truck
4-4 Wheel Drive Shafts
Driveline/Axle
Assembly Procedure
1. Insert new clamps (3) into the original halfshaft seal cover
(1) if you are reusing the original halfshaft seal cover.
2. Slide the halfshaft seal cover (1) onto the halfshaft
assembly (2), starting at the outboard (CV joint) end.
3. Align the inboard clamp (2) on the inboard joint (1). Align
the seal cover seam so the seam is straight.
Important: Tighten the seal cover clamp (1) as tight as possible
without deforming the retaining clip. Clamps that are not tight
enough allow the cover to slide upon the joint. This causes
shortened service life.
4. Use J 41187 in order to tighten the inboard seal cover
clamp (1).
2001/02 LSSV Truck
Driveline/Axle
Wheel Drive Shafts 4-5
5. Rotate J 41187 toward the clip in order to bend the band
onto the clip.
6. Pull on the tool’s cutting handle in order to cut off the
excess band.
7. Hammer the band flat between the latch tabs. Peen the
latch tabs over in order to lock the back into position.
8. Twist the halfshaft seal cover (1) 90 degrees.
Important: Be sure that the inboard tab of the halfshaft seal
cover (1) is 180 degrees opposite the outboard tab of the
halfshaft seal cover (1) before proceeding.
9. Position the outboard end of the halfshaft seal cover (1)
over the CV joint (2) flat.
2001/02 LSSV Truck
4-6 Wheel Drive Shafts
Driveline/Axle
Important: Tighten the seal cover clamp (1) as tight as possible
without deforming the retaining clip. Clamps that are not tight
enough allow the cover to slide upon the joint. This causes
shortened service life.
10. Use J 41187 in order to tighten the outboard cover clamp
(1).
11. Rotate J 41187 toward the clip in order to bend the band
onto the clip.
12. Pull the tool’s cutting handle in order to cut off the
excess band.
13. Hammer the band flat between the latch tabs. Peen the
latch tabs over in order to lock the band into position.
2001/02 LSSV Truck
Driveline/Axle
Wheel Drive Shafts 4-7
14. Gather the halfshaft seal cover material at the center.
Wrap the halfshaft seal cover (1) tightly with the nylon
strap (2) provided in the kit.
2001/02 LSSV Truck
4-8 Wheel Drive Shafts
Description and Operation
Wheel Drive Shaft Boot Covers
This protective device is intended for off-highway
usage.
Off-highway usage can result in a buildup of debris
(mud/ice/etc.) on the lower control arm. The purpose of
this protective device is to sweep as much debris as
possible from the lower control arm.
This protective device WILL, during its useful life, take
on a ragged appearance while still adequately
protecting the drive axle seal. The device is functioning
as long as the Kevlar fabric continues to sweep debris
from the lower control arm.
2001/02 LSSV Truck
Driveline/Axle
Driveline/Axle
Wheel Drive Shafts 4-9
Special Tools and Equipment
Illustration
Tool Number/
Description
J 41187
Band-it Type Tool
2001/02 LSSV Truck
4-10 Front Drive Axle
Driveline/Axle
Front Drive Axle
Repair Instructions
Front Axle Vent Tube Filter Replacement
Removal Procedure
1. Remove the clamps (2) holding the filter (1) to the hoses.
2. Remove the filter from the hoses and discard.
Installation Procedure
Notice: The filter arrow must point toward the axle vent pipe. If
replacing the hose, the length of the new hose must match the
length of the old hose.
1. Install the filter (1) to the hoses.
2. Install the hose clamps (2) and tighten.
2001/02 LSSV Truck
Driveline/Axle
Front Drive Axle 4-11
Description and Operation
Front Axle Vent Tube Filter
Description
The front axle is specially equipped with a vent tube
filter to protect the axle from contaminants found in the
off-road environment. The vent filter is attached to a
hose with a vented cap at the end, and is mounted in
the engine compartment next to the left inner wheel
housing.
The filter must be inspected occasionally to see if it
needs to be replaced. Refer to Periodic Maintenance
Inspections in Maintenance Schedule section in
2001/02 LSSV Operator’s Manual Supplement.
2001/02 LSSV Truck
4-12 Rear Drive Axle
Driveline/Axle
Rear Drive Axle
Repair Instructions
Rear Axle Vent Tube Filter Replacement
Removal Procedure
Caution: Refer to Vehicle Lifting Caution in Cautions and
Notices.
1. Raise the vehicle and support with safety stands.
2. Remove the clamps (2) holding the filter (1) to the hoses.
3. Remove the filter and discard.
Installation Procedure
Notice: The filter arrow must point toward the axle vent pipe. If
replacing the hose, the length of the new hose must match the
length of the old hose.
1. Install the filter (1) to the hoses.
Install hose clamps (2) and tighten.
2. Remove safety stands and lower vehicle.
2001/02 LSSV Truck
Driveline/Axle
Rear Drive Axle 4-13
Description and Operation
Rear Axle Vent Tube Filter
Description
The rear axle is specially equipped with a vent tube
filter to protect the axle from contaminants found in the
off-road environment. It is attached to a hose with a
vented cap at the end. The rear axle vent filter is
mounted on the top of the axle housing and the hose is
attached to the brake bracket on the driver’s side frame
rail.
The filter must be inspected occasionally to see if it
needs to be replaced. Refer to Periodic Maintenance
Inspections in Maintenance Schedule section in
2001/02 LSSV Operator’s Manual Supplement.
2001/02 LSSV Truck
4-14 Transfer Case
Driveline/Axle
Transfer Case
Repair Instructions
Transmission/Transfer Case Vent Tube
Filter Replacement
Removal Procedure
Caution: Refer to Vehicle Lifting Caution in Cautions and
Notices.
1. Raise the vehicle and support with safety stands.
2. Remove the hose and filter assembly from the
transmission/transfer case by removing the connecting
hose clamps. Discard the filter.
3. Remove the two hose clamps holding the filter to the
hose. Discard the clamps.
Installation Procedure
Notice: The filter flow arrow must point in the direction of the
transmission/transfer case. If replacing the hose, the length of
the new hose must match the length of the old hose.
1. Install the new filter to the two hoses with the two new
hose clamps.
2. Install the filter assembly with vent cap near the end
opposite the transfer case.
3. Push the vent cap end between the filler tube pipe and the
transmission. Push to a vertical exit.
4. Secure the vent hose with tie wrap to the nearest
electrical harness and the transmission filler tube pipe.
5. Remove safety stands and lower vehicle.
2001/02 LSSV Truck
Driveline/Axle
Transfer Case 4-15
Description and Operation
Transfer Case Vent Tube Filter
Description
Each of the vehicles features a five-speed automatic or
four-speed automatic transmission with overdrive and a
two-speed transfer case. A vent tube is mounted
between the transmission/transfer case, which attaches
to a hose, filter and vent cap. The filter must be
inspected occasionally to see if it needs to be replaced.
Refer to Periodic Maintenance Inspections in
Maintenance Schedule section in 2001/02 LSSV
Operator’s Manual Supplement.
2001/02 LSSV Truck
Engine
Table of Contents 6-1
Section 6
Engine
Engine Electrical........................................6-3
Specifications ........................................................6-3
Schematic and Routing Diagrams.......................6-3
Component Locator ..............................................6-9
Starting and Charging Component Views ...........6-9
Connector End Views .........................................6-22
Starting and Charging Connector End Views ..6-22
Diagnostic Information and Procedures...........6-25
Symptom List .....................................................6-25
Repair Instructions..............................................6-31
Voltage Regulator Test......................................6-31
Jump Starting in Case of Emergency ............... 6-34
24V Converter Fuse Replacement.................... 6-36
Circuit Breaker Replacement – 12V or 24V ...... 6-37
Circuit Breaker Bracket Replacement............... 6-39
Battery Tray/Battery Replacement.................... 6-39
Battery Booster/Slave Junction Block
Replacement.............................................. 6-40
Description and Operation................................. 6-42
Battery Description (12V and 24V) ................... 6-42
Starting and Charging System Description
and Circuit Operation................................. 6-42
2001/02 LSSV Truck
6-2 Table of Contents
Engine
BLANK
2001/02 LSSV Truck
Engine
Engine Electrical 6-3
Engine Electrical
Specifications
Fastener Tightening Specifications
Specification
Application
Metric
English
Battery Booster/Slave Junction Block Flange Nuts
14 N•m
10 lb ft
Battery Cable Connections
17 N•m
13 lb ft
Battery Retainer Bolt
25 N•m
18 lb ft
Circuit Breaker Bracket to Support Brace
4-6 N•m
3-4.5 lb ft
Converter Fuse Retaining Nuts
12 N•m
110 lb in
Converter Stud Jam Nuts
12 N•m
110 lb in
Converter Wiring Terminal Nuts
12 N•m
110 lb in
Schematic and Routing Diagrams
2001/02 LSSV Truck
6-4 Engine Electrical
2001/02 LSSV Truck
Engine
Engine
Engine Electrical 6-5
2001/02 LSSV Truck
6-6 Engine Electrical
2001/02 LSSV Truck
Engine
Engine
Engine Electrical 6-7
2001/02 LSSV Truck
6-8 Engine Electrical
2001/02 LSSV Truck
Engine
Engine
Engine Electrical 6-9
Component Locator
Starting and Charging Component Views
Voltmeter and Lamp
Legend
(1) Voltmeter Bracket
(2) Mounting Bracket
(3) Voltmeter Connector
(4) Voltmeter (24V)
(5) Voltmeter Illumination Bulb
(6) Harness Connector
2001/02 LSSV Truck
6-10 Engine Electrical
Engine
Blackout (B/O) Lamp Switches
Legend
(1) Component Connector
(2) B/O Control Switch
(3) Switch Position Label
2001/02 LSSV Truck
(4) Mounting Bracket
(5) B/O Drive Lamp Switch
(6) Component Connector
Engine
Engine Electrical 6-11
Power Converter Harness Routing Body Side View (Utility)
Legend
(1) Harness to IP Convenience Center
(2) Wiring Harness to Circuit Breaker
(3) Grommet
(4) Wiring Harness to Voltmeter
(5) Body Side Panel
2001/02 LSSV Truck
6-12 Engine Electrical
Engine
Power Converter Harness Routing Rear Lamp (Utility)
Legend
(1) Power Converter Harness
(2) Frame
2001/02 LSSV Truck
(3) Rear Lamp Extension Harness
Engine
Engine Electrical 6-13
Power Converter Harness Routing (Pickup)
Legend
(1) Wiring Harness to Voltmeter
(2) Wiring Harness to Circuit Breaker
(3) Wiring Harness to Contactor
(4) Jumper Wiring Harness
(5) Wiring Harness to Relay
2001/02 LSSV Truck
6-14 Engine Electrical
Engine
Power Converter
Legend
(1) Ground Connection
(2) 12 Volt Connection
(3) 24 Volt Connection
2001/02 LSSV Truck
(4) Fuse Link Covers
(5) Ignition Connection
(6) Power Converter
Engine
Engine Electrical 6-15
Battery Equalizer
Legend
(1) 24 Volt Connection
(2) 12 Volt Connection
(3) Ground Connection
(4) Battery Equalizer
(5) LED Status Indicator
2001/02 LSSV Truck
6-16 Engine Electrical
Engine
Converter Protection Contactor (Starter Relay)
Legend
(1) Boot
(2) From 24V Equalizer Stud
(3) Contactor (Starter Relay)
(4) From 24V Converter Stud
(5) Engine Wiring Harness
2001/02 LSSV Truck
(6) From the Ignition Stud (Power Converter)
(7) Ground from Power Converter
(8) From 24V Circuit Breaker
(9) From Circuit Breaker 24V Contactor Stud
Engine
Engine Electrical 6-17
Bulkhead Junction Block
Legend
(1) Junction Block
(2) Jumper Plate
(3) Ground Connection
(4) Mounting Bracket
(5) Negative Winch Cable Rear
(6) Negative Winch Cable Front
(7) Negative Battery Cable
(8) Positive Battery Cable
(9) Positive Winch Cable Front
(10) Positive Winch Cable Rear
2001/02 LSSV Truck
6-18 Engine Electrical
Engine
24V Battery Booster and/Starter Cable Junction Block
Legend
(1) Positive Battery Cable
(2) Junction Block
(3) Alternator Output Cable
2001/02 LSSV Truck
(4) Junction Block Post Nut
(5) Positive Winch Cable Permanent Mount
(6) Junction Block Post
Engine
Engine Electrical 6-19
Junction Block – IP
Legend
(1) Cavity A
(2) Cavity F
(3) Cavity E
(4) Junction Block – IP
(5) C-9 Connector Location
(6) To Underhood Relay Harness
(7) C-4 Connector Location
2001/02 LSSV Truck
6-20 Engine Electrical
Engine
24V Cables and Circuit Breakers
Legend
(1) 12V Circuit Breaker
(2) 24V Circuit Breaker
(3) To 24V Battery
(4) To Junction Block – Underhood
(5) To Front Blackout Lamps
2001/02 LSSV Truck
(6) B/O Panel Harness Connector
(7) To Rear Extension Harness
(8) Ground Stud
(9) B/O Panel Harness
(10) To 24V Converter/Equalizer
Engine
Engine Electrical 6-21
24V Battery Booster Connector
Legend
(1) Battery Positive Ground (RED)
(2) Booster Connector Assembly
(3) Battery Negative Ground (BLK)
2001/02 LSSV Truck
6-22 Engine Electrical
Engine
Junction Block – IP – C9
Connector End Views
Starting and Charging
Connector End Views
Voltmeter Connector
Connector Part
Information
Connector Part
Information
•
02973781
•
2-Way Series 280 (BLK)
Wire
Color
Circuit No.
Pin
A
ORN
39
B
BLK
150B
Function
Voltmeter Feed
Ground
Voltmeter Lamp
•
12193922
•
6-Way F Metric Pack 280
Series Flex-Lock (CRM)
Wire
Color
Circuit No.
Pin
Function
A
150A
150A
B
---
---
Not Used
C
---
---
Not Used
D
---
---
Not Used
E
PNK
39
Power Converter IGN
F
BRN
9
Voltmeter Lamp
Positive
Voltmeter/Lamp
Ground
Voltmeter Relay
Connector Part
Information
•
12110053
•
Bulb Type W2 Axial
Wire
Color
Circuit No.
Pin
A
BRN
9
B
BLK
150
2001/02 LSSV Truck
Function
Connector Part
Information
Park Lamp Feed
Ground
•
12033873
•
5-Way F M/P Series 630
(GRY)
Wire
Color
Circuit No.
Pin
Function
30
BRN/WHT
901C
B/O Headlamp
85
TAN/WHT
901B
B/O Switch
86
WHT
915
B/O Switch
87
PNK
911E
Service Lamp Switch
Engine
Engine Electrical 6-23
Relay Block Module
Connector Part
Information
•
12146836
•
36-Way F Flex-Lock 280
Series (BLK)
Wire
Color
Circuit No.
Pin
A1
ORN
40B
A2
---
---
A3
RED
A4
Relay Block Module (cont’d)
Connector Part
Information
Function
•
12146836
•
36-Way F Flex-Lock 280
Series (BLK)
Wire
Color
Circuit No.
Pin
Function
CTSY Circuit
C1
WHT
352B
Not Used
C2
---
---
912B
Relay Jumper
C3
RED
912B
Relay Jumper
ORN/BLK
240A
Park Lamp Circuit
C4
BLU
545B
DRL Circuit
A5
---
---
Not Used
C5
---
---
A6
RED
912B
Relay Jumper
C6
RED
912B
Relay Jumper
A7
PNK
839A
Back Up Circuit
C7
GRN
1329A
Horn Circuit
A8
---
---
Not Used
C8
---
---
A9
RED
912A
Relay Power
C9
RED
912B
Relay Jumper
B1
BLK
150A
Relay Jumper
D1
BLK
150C
Relay Ground
B2
---
---
Not Used
D2
---
---
B3
ORN
40A
CTSY Circuit
D3
WHT
352A
HDLP Circuit
B4
BLK
150A
Relay Jumper
D4
BLK
150A
Relay Jumper
B5
---
---
Not Used
D5
---
---
B6
ORN/BLK
240B
Park Lamp Circuit
D6
BLU
545A
DRL Circuit
B7
BLK
150A
Relay Jumper
D7
BLK
150A
Relay Jumper
B8
---
---
Not Used
D8
---
---
B9
PNK
839B
Back Up Circuit
D9
GRN
1329B
Headlamp Circuit
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Horn Circuit
2001/02 LSSV Truck
6-24 Engine Electrical
Engine
Multi-Mount Winch Vehicle Connector Front
Connector Part
Information
•
TX017639
•
2-Way (Red)
Wire
Color
Circuit No.
Pin
A
BLK/RED
1
B
BLK
150
Connector Part
Information
Function
TX017640
•
2-Way (Red)
Wire
Color
Circuit No.
Positive
A
BLK/RED
1
Positive
Negative
B
BLK
150
Negative
•
TX017639 or TX017640
•
2-Way (RED)
Wire
Color
Circuit No.
Pin
A
BLK
150
Negative
B
BLK/RED
1
Positive
2001/02 LSSV Truck
•
Pin
Multi-Mount Winch Connector
Connector Part
Information
Multi-Mount Winch Vehicle Connector Rear
Function
Function
Engine
Engine Electrical 6-25
Diagnostic Information and Procedures
Symptom List
Note: For vehicle no start condition, refer to Diagnostic System Check in the 2001/02 C/K Truck Service Manual.
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
•
Converter No Voltage
•
Voltmeter Lamp Inoperative
•
Battery Equalizer Inoperative
•
Contactor Inoperative
•
Voltmeter Inoperative
Converter No Voltage
Step
Action
Value(s)
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Battery
Charging in
2001/02 C/K
Truck Service
Manual
Go to Step 4
Go to Step 5
Go to Step 11
Go to Step 9
Go to Step 6
Go to Step 7
Schematic Reference: Engine Electrical
1
Did you review the Starting and Charging System
Description and Operation?
___
Are the batteries properly charged?
2
3
___
Connect a test lamp between the shorter 12V stud
and ground.
___
Does the test lamp illuminate?
4
Connect a test lamp between the shorter 24V stud
and ground.
___
Does the test lamp illuminate?
5
Connect a test lamp between the longer 12V stud
and ground.
___
Does the test lamp illuminate?
6
Locate and repair the source of the overload and
replace the fuse.
___
Did you complete the replacement?
7
Connect a test lamp between the output stud of
the 12V circuit breaker and ground.
Go to Step 25
___
Does the test lamp illuminate?
8
9
Locate and repair the open in circuit 152.
Did you complete the repair?
Connect a test lamp between the longer 24V stud
and ground.
Go to Step 8
___
10
Does the test lamp illuminate?
Go to Step 25
Go to Step 10
___
___
Does the test lamp illuminate?
Connect a test lamp between the input stud of the
12V circuit breaker and ground.
___
Go to Step 17
Go to Step 16
Go to Step 12
Go to Step 13
___
2001/02 LSSV Truck
6-26 Engine Electrical
Engine
Converter No Voltage (cont’d)
Step
11
Action
Connect a test lamp between the IGN stud of the
converter and ground.
Value(s)
Locate and repair the source of the overload and
replace the 12V circuit breaker.
14
Locate and repair the open in circuit 5.
Did you complete the repair?
Locate and repair the open or high resistance in
circuit 901.
15
___
With the contactor energized, connect a test lamp
between terminal D and ground.
Locate and repair the source of the overload and
replace the fuse.
18
19
Connect a test lamp between the 24V circuit
breaker output terminal and ground.
Locate and repair the source of the overload or
high resistance and replace the circuit breaker.
___
22
24
25
Replace the power converter.
Did you complete the replacement?
Locate and repair the open in circuit 150.
Did you complete the repair?
Operate the system in order to verify the repair.
Did you correct the condition?
2001/02 LSSV Truck
Go to Step 18
___
Go to Contactor
Inoperative
Go to Step 20
___
Go to Step 25
___
Go to Step 21
___
Go to Step 22
___
Go to Step 25
___
Did you complete the repair?
23
Go to Step 14
___
Did you complete the repair?
Locate and repair the open in the power circuit to
the 24V circuit breaker.
Go to Step 24
Go to Step 25
Does the test lamp illuminate?
21
Go to Step 23
___
Did you complete the repair?
20
___
___
Does the test lamp illuminate?
Locate and repair the open of high resistance in
circuit 39.
___
___
Did you complete the repair?
Connect a test lamp between terminal C and
ground.
Go to Step 25
Go to Step 25
Does the test lamp illuminate?
17
___
___
Does the test lamp illuminate?
16
Go to Step 19
Go to Step 25
Did you complete the repair?
Connect a self-powered test lamp to the ground
terminal of the converter and ground.
Go to Step 15
___
Did you complete the repair?
13
No
___
Does the test lamp illuminate?
12
Yes
___
Go to Step 25
___
___
___
Go to Step 25
Go to Step 25
System OK
___
___
Go to Step 2
Engine
Engine Electrical 6-27
Voltmeter Lamp Inoperative
Step
Action
Value(s)
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Step 4
Go to Step 5
Go to Step 6
Schematic Reference: Engine Electrical
1
2
Did you review the Starting and Charging System
Description and Operation?
Connect a test lamp between cavity A of the
voltmeter bulb and ground.
___
___
Does the test lamp illuminate?
3
Connect a self-powered test lamp to cavity G and
ground.
___
Does the test lamp illuminate?
4
Locate and repair the open or high resistance in
circuit 9.
___
Did you complete the repair?
5
6
Go to Step 7
Replace the voltmeter bulb.
Did you complete the replacement?
Locate and repair the open or high resistance in
150.
___
Go to Step 7
___
Did you complete the repair?
7
___
___
___
Go to Step 7
Operate the system in order to verify the repair.
Did you correct the condition?
___
System OK
Go to Step 2
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Step 4
Go to Step 6
Go to Step 5
Go to Step 8
Go to Step 9
Go to Step 11
Refer to
Contactor
Inoperative
Go to Step 7
Go to Step 13
Battery Equalizer Inoperative
Step
Action
Value(s)
Schematic Reference: Engine Electrical
1
2
Did you review the Starting and Charging System
Description and Operation?
Connect a test lamp between the 12V terminal of
the equalizer and ground.
___
___
Does the test lamp illuminate?
3
Connect a test lamp between the 24V terminal
and ground.
___
Does the test lamp illuminate?
4
Connect a test lamp between the output side of
the 12V circuit breaker and ground.
___
Does the test lamp illuminate?
5
Connect a test lamp between terminal B of the
contactor and ground.
___
Does the test lamp illuminate?
6
Connect a self-powered test lamp to the ground
terminal and ground.
___
Does the test lamp illuminate?
7
Replace the battery equalize.
Did you complete the replacement?
___
Go to Step 14
___
2001/02 LSSV Truck
6-28 Engine Electrical
Engine
Battery Equalizer Inoperative (cont’d)
Step
8
Action
Value(s)
Locate and repair the open or high resistance in
circuit 152.
___
Did you complete the repair?
9
Connect a test lamp on the input side of the circuit
breaker and ground.
Go to Step 10
Locate the source of the overload and replace the
circuit breaker.
___
Locate and repair the open or high resistance
between the contactor and converter.
___
Go to Step 14
Locate and repair the open or high resistance in
the power feed circuit.
___
___
Go to Step 14
Locate and repair the open or high resistance in
circuit 150.
___
Did you complete the repair?
14
___
___
Did you complete the repair?
13
Go to Step 12
Go to Step 14
Did you complete the repair?
12
___
___
Did you complete the repair?
11
No
Go to Step 14
Does the test lamp illuminate?
10
Yes
___
Go to Step 14
Operate the system in order to verify the repair.
Did you correct the condition?
___
System OK
Go to Step 2
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Battery
Charging in
2001/02 C/K
Truck Service
Manual
Go to Step 4
Go to Step 5
Go to Step 7
Go to Step 6
Contactor Inoperative
Step
Action
Value(s)
Schematic Reference: Engine Electrical
1
Did you review the Starting and Charging System
Description and Operation?
___
Are the batteries properly charged?
2
3
___
With the ignition on, connect a test lamp between
terminal F and ground.
___
Does the test lamp illuminate?
4
Connect a test lamp between terminal E and
ground.
___
Does the test lamp illuminate?
5
6
Locate and repair the open in circuit 39.
Did you complete the repair?
Connect a test lamp between terminal A and
ground.
Does the test lamp illuminate?
2001/02 LSSV Truck
___
Go to Step 18
___
___
Go to Step 8
Go to Step 10
Engine
Engine Electrical 6-29
Contactor Inoperative (cont’d)
Step
7
8
Action
Value(s)
Locate and repair the open in circuit 150.
Did you complete the repair?
Connect a test lamp between terminal B circuit
900 and ground.
___
10
Go to Step 11
Replace the contactor assembly.
___
Did you complete the replacement?
Connect a test lamp between terminal C circuit
900 and ground.
With the ignition on, connect a test lamp to
terminal D and ground.
12
Connect a test lamp between the output stud of
the 24V circuit breaker and ground.
17
Locate and repair the open or high resistance in
circuit 900.
___
___
Go to Step 15
___
Go to Step 18
Connect a test lamp between the input terminal of
the 24V and ground.
___
Go to Step 16
Replace the 24V circuit breaker.
___
Did you complete the replacement?
Locate and repair the circuit that feeds the 24V
circuit breaker.
Go to Step 18
___
Did you complete the repair?
18
Go to Step 9
Go to Step 14
Does the test lamp illuminate?
16
Go to Step 18
___
Did you complete the repair?
15
Go to Step 13
Go to Step 18
Does the test lamp illuminate?
14
___
Go to Step 12
___
Did you complete the repair?
13
Go to Step 18
Go to Step 9
___
Does the test lamp illuminate?
Locate and repair the open in the jumper between
terminal A and C circuit 900.
___
___
Does the test lamp illuminate?
11
Go to Step 18
No
___
Does the test lamp illuminate?
9
Yes
Go to Step 17
___
___
Go to Step 18
Operate the system in order to verify the repair.
Did you correct the condition?
___
System OK
Go to Step 2
Yes
No
Go to Step 2
Go to Description
and Operation
Voltmeter Inoperative
Step
Action
Value(s)
Schematic Reference: Engine Electrical
1
Did you review the Starting and Charging System
Description and Operation?
___
2001/02 LSSV Truck
6-30 Engine Electrical
Engine
Voltmeter Inoperative (cont’d)
Step
Action
Value(s)
Yes
No
Go to Step 3
Go to Step 4
Go to Step 5
Go to Step 6
Go to Step 7
Go to Step 8
Connect a test lamp between cavity A of the
voltmeter and ground.
2
Note: Vehicle must be running for the following
steps.
___
Does the test lamp illuminate?
3
Connect a test lamp between cavity B of the
voltmeter and ground.
___
Does the test lamp illuminate?
4
Connect a test lamp between cavity 86 of the
voltmeter relay and ground.
___
Does the test lamp illuminate?
5
6
7
Locate and repair the open in circuit 150.
Did you complete the repair?
Replace the voltmeter.
Did you complete the repair?
Locate and repair the open or high resistance in
circuit 901.
___
___
8
Locate and repair the open or high resistance in
circuit 901.
10
12
13
Connect a test lamp between cavity and ground.
Does the test lamp illuminate?
Replace the voltmeter relay.
Did you complete the replacement?
Locate or repair the open or high resistance in
circuit 150.
Locate and repair the open or high resistance in
circuit 39.
___
___
Operate the system in order to verify the repair.
Did you correct the condition?
2001/02 LSSV Truck
Go to Step 9
Go to Step 15
Go to Converter
Inoperative
Go to Step 11
Go to Step 14
Go to Step 13
Go to Step 12
Go to Step 15
___
___
___
Go to Step 15
___
Did you complete the repair?
15
Go to Step 10
___
Did you complete the repair?
14
___
___
Does the test lamp illuminate?
11
___
___
Did you find and correct the condition?
Connect a test lamp between cavity 87 of the
voltmeter relay and ground.
___
Go to Step 15
Does the test lamp illuminate?
9
Go to Step 15
___
Did you complete the repair?
Connect a test lamp between cavity 85 and
ground.
Go to Step 15
___
Go to Step 15
___
System OK
Go to Step 2
Engine
Engine Electrical 6-31
Repair Instructions
Voltage Regulator Test
Tools Required
•
Digital Voltmeter 5 Amp
•
24V Load
•
12V-20 Amp power Supply
•
Test jumpers or cables
Note: 24V load may use two, 12V automotive head lamps wired
in series for this load.
1. Remove the voltage power converter/voltage regulator
from the vehicle. Refer to Power Converter Replacement
Tahoe) or Power Converter Replacement (Suburban) in
Interior Trim.
2. Remove the fuses and test the unit with an ohmmeter.
Replace any faulty fuses.
3. Connect the GND terminal of the unit to the 12V battery
ground or a power supply ground.
Notice: The power supply must be set to 12.6V with the power
turned ON. A small spark may result.
4. Connect the 12V terminal of the unit to the 12V battery
positive connection or to a power supply positive
connection.
5. Connect the 24V terminal of unit to one a 5 amp, 24V
load. Connect the opposite of the load to the GND. A
useful 5 amp, 24V load can be built by connecting two, 5
amp, 12V loads in series. Example: Connect two, 12V
headlamps in series.
6. Connect the negative terminal of a Digital voltmeter to the
24V terminal of the unit under test. Set the meter to the
24V terminal of the unit under test. Set the meter to
200VDC and turn it on. The meter should read between
11-13V. If two 12V series headlamps are being used for
the test load, the lamps should glow at one half intensity.
If there is no voltage output, or if the unit is putting out
24V, check the connections. If the connections are
accurate, return the unit to the manufacturer (Sure Power)
for evaluation.
7. Connect the IGN terminal of the unit to the 12V terminal
using a jumper wire. This turns the unit ON.
2001/02 LSSV Truck
6-32 Engine Electrical
Engine
8. Observe the voltage on the meter and the intensity of the
lamps if connected. The lamps should be at full intensity.
The voltage should be approximately twice the 12V
reading +/- 1.5V. For example, if the 12V input is 12.6V,
the 24V output should be between approximately 24V and
27V. Verify the input voltage at the 12V and 27V. Verify
the input voltage at the 12V terminal. If voltages are less
or greater than the indicated range, or if the lamps are not
glowing greater than half intensity, return the unit to the
manufacturer (Sure Power) for evaluation or call for a
calibration.
9. Disconnect the unit under test.
Option 1: Single 24V Battery Bank
Note: The following is used in addition to the Power
Converter/Voltage Regulator Replacement instructions as
recommended by the manufacturer (Sure Power Industries, Inc.)
1. Mount the voltage regulator close to the battery bank.
Notice: Do not connect to the chassis ground. Improper
operation may result.
2. Connect the ground terminal directly to the 12V, A battery
ground.
3. Connect the 12V positive terminal to the 12V, A battery
positive post.
4. Connect the 24V, output terminal to the 24V, B battery
positive post.
Notice: This circuit activates the voltage regulator only and
does not act as an ON/OFF switch for the 24V accessories.
5. Connect the ignition terminal to a 12V ignition source.
6. Confirm all connections. Single battery bank A and B
batteries should be connected in series.
7. Connect all 12V loads to the A battery positive post.
Connect all 24V loads to the B battery positive post.
2001/02 LSSV Truck
Engine
Engine Electrical 6-33
Option 2: Separate 24V Battery Bank
Note: The following is used in addition to the Power
Converter/Voltage Regulator Replacement as recommended by
the manufacturer (Sure Power Industries, Inc.)
1. Mount the Voltage regulator close to the main, 12V
chassis battery.
Notice: Do not connect to the chassis ground. Improper
operation may result.
2. Connect the ground terminal directly to the 12V, chassis
battery ground.
3. Connect the 12V positive terminal to the 12V, chassis
battery positive post.
Notice: Do not connect the 12V loads to the A battery of the
24V battery bank. An imbalance condition will result affecting
the battery life.
4. Connect the 24V, output terminal to the 24V, B battery
positive post.
5. Connect the ignition terminal to a 12V ignition source.
6. Confirm all connections. Maintain a separate 24V battery
bank for 24V loads only.
Testing
1. Start the engine.
2. Assure that 12V are present at the IGN terminal of the
voltage regulator.
3. Apply 10 amps of 24V load.
4. Measure the 12V input voltage and the 24V output
voltage. The 24V output voltage should be two times the
12V input voltage. The tolerance is +/- 0.3V.
5. Adjust if required.
2001/02 LSSV Truck
6-34 Engine Electrical
Engine
Adjustment
The voltage adjustment will allow adjustment of the 24V output
with respect to the 12V. This adjustment is preset at the factory.
If adjustment is necessary it should be made when normal
charge voltage is present at the 12V battery (14V). Adjust the
24V under light load to 27.5 to 28V. An isolator may be used in
the 24V output. If this is done, the 24V must be adjusted to
compensate for the isolator.
Notice: 24V loads drawing current in excess of the rating of the
voltage regulator are permissible for short periods of time only
(minutes). Prolonged use of these loads will result in improper
battery charge and eventual battery deterioration.
Jump Starting in Case of Emergency
If the battery (or batteries) on the vehicle has run down and the
vehicle will not start, you may want to use another vehicle to
provide power to start the vehicle.
The NATO term for this system is Slave start. In the event the
system must be replaced, refer to Slave Connector Replacement
in Body Front End.
NATO Slave Cables are the only recommended method of jump
starting similar vehicles.
Slave Starting
Caution: Batteries can hurt you. They can be dangerous
because they contain acid that can burn you. They contain
gas that can explode or ignite. They contain enough
electricity to burn you. If you don’t follow these steps
exactly some or all of these things can hurt you.
Notice: Ignoring these steps could result in costly damage to
the vehicle. Trying to start your vehicle by pushing or pulling it
won’t work and it could damage your vehicle.
You should always use the NATO Slave Receptacle and Slave
Cable when performing this operation.
NATO Slave Cable
2001/02 LSSV Truck
Engine
Engine Electrical 6-35
1. Get the vehicles close enough so the slave cable can
reach, but be sure the vehicles aren’t touching each other.
If they are, it could cause a ground connection you don’t
want. You wouldn’t be able to start your vehicle, and the
bad grounding could damage the electrical systems. To
avoid the possibility of the vehicles rolling, set the parking
brake firmly on both vehicles involved in the jump start
procedure. Put an automatic transmission in PARK (P) or
a manual transmission vehicle; be sure the transfer case
is not in NEUTRAL (N).
2. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette lighter
or accessory power outlets. Turn off all lamps that aren’t
needed as well as radios. This will avoid sparks and help
save both batteries.
3. Locate the slave receptacles on both vehicles.
Caution: Using a match near a battery can cause battery
gas to explode. People have been hurt doing this, and
some have been blinded. Use a flashlight if you need more
light. Be sure the batteries have enough water. You don’t
need to add water to the Delco Freedom battery (or
batteries) installed in every new GM vehicle. But if a battery
has filler caps, be sure the right amount of fluid is there. If
it is low add water to take care of that first. If you don’t
explosive gas could be present. Don’t get is on you. If you
accidentally get it in your eyes or on your skin, flush the
place with water and get medical help immediately.
Caution: Fans or other moving engine parts can injure you
badly. Keep your hands away from moving parts once the
engine is running.
4. Connect the slave cable to the vehicle with the dead
battery.
5. Start the vehicle with the good batteries.
6. Connect the slave cable to the vehicle with the good
battery.
7. Allow the vehicle with the dead battery to charge for 10
minutes.
Note: It may take up to 30 minutes to charge the battery
depending on its state of charge.
8. Start the vehicle with the dead battery.
9. Remove the slave cable in the reverse order that it was
installed. Take care not to let the cables touch a metal
surface.
2001/02 LSSV Truck
6-36 Engine Electrical
Engine
24V Converter Fuse Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the nuts, wires and fuse hardware from the fuse
link studs. Leave nylon shoulder washers (1) on the
studs. Note removal of wiring for installation.
3. Clean stud threads with steel wool or a wire brush. Clean
the contact surface of the inside jam nuts (5).
4. Disconnect fuse link (6) and disgard.
Installation Procedure
1. Install the flat washers (4) over the nylon shoulder
washers (1).
2. Install the inside jam nuts (5) as follows: with a wrench
tighten and loosen each nut a few times to clean the
threads. From a finger tight position, loosen the jam nuts
about a ¼ turn.
Notice: Refer to Fastener Notice in Cautions and Notices.
Note: Do not tighten the inside jam nuts.
3. Install the fuse link (6), fuse cover (7), flat washers (8) and
the fuse retaining nuts (9) and (10) full height nut (9) on
long stud (2) and jam nut (10) on short stud (3).
Tighten
Tighten fuse retaining nuts to 12 N•m (110 lb in).
4. Install the wiring (11) in the same location as removed.
5. Install the lock washer (12) and the full height nut (13) on
the long stud (2) and tighten.
Tighten
Tighten nut to 12 N•m (110 lb in).
6. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cables to 17 N•m (13 lb ft).
2001/02 LSSV Truck
Engine
Engine Electrical 6-37
Circuit Breaker Replacement – 12V or 24V
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative battery cable of the right battery and
the 12V and 24V cables of the left battery.
2. Remove nuts (1) holding the wires to the circuit breaker
and remove wires.
Note: Note location of wires for reassembly.
3. Remove the two bolts (2), holding the 12V (3) or 24V (4)
circuit breaker to the fender mount.
4. Remove the 12V (1) or 24V (2) circuit breaker.
2001/02 LSSV Truck
6-38 Engine Electrical
Engine
Installation Procedure
1. Install the 12V (1) or 24V (2) circuit breaker.
2. Install the 12V (3) or 24V (4) circuit breaker to the fender
mount with the two bolts (2).
Note: Install 24V circuit breaker with auxiliary contact up.
3. Install the wires to the circuit breaker with the two nuts (1).
Notice: Refer to Fastener Notice in Cautions and Notices.
4. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cables to 17 N•m (13 lb ft).
2001/02 LSSV Truck
Engine
Engine Electrical 6-39
Circuit Breaker Bracket Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative battery cable of the right and the
12V and 24V cables of the left battery.
2. Remove the circuit breakers. Refer to Circuit Breaker
Replacement – 12V or 24V.
3. Remove bolts (1) and nuts (4) attaching bracket (3) to
fender/cowl support (2).
Installation Procedure
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install bracket (3) to fender/cowl (2) and tighten bolts (1)
and nuts (4).
Tighten
Tighten bracket bolts to 4-6 N•m (3-4.5 lb ft).
2. Install circuit breakers. Refer to Circuit Breaker
Replacement - 12V or 24V.
3. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cables to 17 N•m (13 lb ft).
Battery Tray/Battery Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Loosen bolts (1). Push up battery tray (2) and remove
from frame.
3. Unsnap the positive battery cable cover if equipped.
4. Remove positive and negative battery cables.
5. Remove retainer bolt and remove battery.
2001/02 LSSV Truck
6-40 Engine Electrical
Engine
Installation Procedure
1. Install battery in tray.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install battery retainer and tighten bolt.
Tighten
Tighten retainer bolt to 25 N•m (18 lb ft).
3. Install positive and negative cables and tighten.
Tighten
Tighten cables to 17 N•m (13 lb ft).
4. Snap the positive battery cable cover closed.
5. Lift battery tray onto bolts on frame and tighten.
6. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cables to 17 N•m (13 lb ft).
Battery Booster/Slave Junction Block
Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Release the junction block cover tab and open the cover.
3. Remove the nut and washer holding the positive booster
cable and the starter cable junction box.
4. Remove the cables.
5. Release tab (1) and lift out of slot (2) and remove junction
block (3).
2001/02 LSSV Truck
Engine
Engine Electrical 6-41
Installation Procedure
1. Install the junction block (3) into slot (2). Push until tab (1)
engages in bracket.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install the cables with flanged nut and washer.
Tighten
Tighten the flange nut to 14 N•m (10 lb ft).
3. Close the junction block cover securely.
4. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cables to 17 N•m (13 lb ft).
2001/02 LSSV Truck
6-42 Engine Electrical
Description and Operation
Battery Description (12V and 24V)
The engine electrical options include the slave/booster
receptacle, a power converter/voltage regulator, 12and 24-Volt circuit breakers, a protection contactor, and
a two- or three-battery power system.
The two batteries in series provide 24V of power which
is isolated by the power converter and controlled by the
circuit breakers. These step the power down to 12V
from 24V. Greater power is needed for the higher load
used by optional radio communications, the 24V starter
or for compatibility with other booster/slave receptacles
on other vehicles.
Refer to 2001/02 C/K Service Manual for further details.
Refer to Replacement procedures in this manual for
repairs on various electrical components.
Maintenance
Engine
relay pin D to starter solenoid terminal S. This provides
voltage to the hold-in winding and the pull-in winding of
the solenoid.
Both solenoid windings are energized. The circuit
through the pull-in winding is completed to ground
through the starter motor. The windings work together
magnetically to pull in and hold the plunger. The
plunger moves the shift lever. This action causes the
starter drive assembly to rotate as it engages the
flywheel ring gear on the engine. At the same time, the
plunger also closes the solenoid switch contacts in the
starter solenoid. Full battery voltage is supplied directly
to the starter motor and it cranks the engine.
As soon as the solenoid switch contacts close, voltage
is no longer supplied through the pull-in windings, since
battery voltage is supplied to both ends of the windings.
The hold-in winding remains energized, and its
magnetic field is strong enough to hold the plunger,
shift lever and drive assembly solenoid switch contacts
in place to continue cranking the engine.
Starting and Charging System
Description and Circuit Operation
When the ignition switch is released from the start
position, battery voltage is removed from the CKT 6
(PPL) wire and the junction of the two windings.
Voltage is supplied from the motor contacts through the
voltage supplied to the pull-in windings. However, the
voltage supplied to the pull-in winding is now opposing
the voltage supplied when the winding was first
energized. The magnetic fields of the pull-in and holdin windings now oppose one another. This action of the
windings, with the help of the return spring, causes the
starter drive assembly to disengage and solenoid
switch contacts to open simultaneously. As soon as
the contacts open, the starter circuit is turned off.
Starter
Charging
Battery voltage is available at all times through fuse 6
located in the underhood fuse-relay center. Voltage is
made available at the ignition switch through CKT 242
(RED) wire. When the ignition switch is placed in start,
contacts in the switch close to apply voltage to the
crank fuse 8 of the I/P fuse block. From the crank fuse,
voltage is sent on CKT 806 (PPL) to the transmission
range switch for automatic transmission.
The generator provides voltage to operate the vehicle’s
electrical system and to charge its batteries. A
magnetic field is created when current flows through
the rotor. This field rotates as the rotor is driven by the
engine, creating an AC voltage in the stator windings.
The AC voltage is converted to DC by the bridge
rectifier and is supplied to the electrical system at the
battery terminals. The RH and LH batteries are wired
in series with the LH battery providing 24V to the starter
circuit. The RH battery supplies splices off to supply
the 12V system. The 24V system is provided from the
positive post of the LH battery. This generator’s
regulator uses digital techniques to supply the rotor
current and thereby controlling the output voltage. The
rotor current is proportional to the width of the electrical
pulses supplied to it by the regulator. When the ignition
switch is placed in run, narrow width pulses are
supplied to the rotor, creating a weak magnetic field.
When the engine is started, the regulator senses
generator rotation by detecting AC voltage at the stator
through an internal wire. Once the engine is running,
the regulator varies the field current by controlling the
pulse width. This regulates the generator output
voltage for proper battery charging and electrical
system operation.
The 24V power system makes each vehicle capable of
accepting a power boost through its slave connection
from any vehicle similarly equipped. This 24V system
requires specific maintenance.
Each power converter panel contains a circuit breaker.
Refer to Circuit Breaker Replacement – 12V or 24V.
Note: Repairs in this manual are limited to the specific
military equipment included in the LSSV options most
commonly ordered.
If the automatic transmission is in the park or neutral
position, contacts are closed which applies voltage to
the CKT 1035 (PPL) wire at pin G of the transmission
range switch. The CKT 1035 (PPL) wire applies
voltage to pin F of the power converter protector relay
located on the upper left hand side of the bulkhead.
The power converter protector relay coil is connected to
pin F and to pin E. The CKT 150 (BLK) wiring from pin
E provides a ground path to ground G105 and the
power converter protector relay coil is energized.
When the power converter protector relay coil is
energized, contacts are closed to apply voltage to the
starter solenoid. The CKT 900 (RED) wire from the LH
battery to pin C of the power converter protector relay
provides voltage, which is sent through the CKT 6
(PPL) wire, connected at the power converter protector
2001/02 LSSV Truck
Engine
The digital regulator controls the bat indicator lamp with
a solid state lamp driver. The lamp driver turns on the
lamp whenever undervoltage, overvoltage or a stopped
generator is detected.
Voltage is available to the indicator lamp and the
generator when the ignition switch is in “run,” bulb test
or “start.” The 20 amp gauges fuse 4 located in the I/P
fuse block provides voltage through the CKT 39 (PNK)
wire to instrument cluster pin 22. When there is no
current flowing, battery voltage is available at pin 19
and provides the generator through the CKT 25 (BRN)
wire. Generator connector cavity B connects to
generator pin L. This voltage input provides operating
power for the regulator. This switch closure allows
current to flow which causes the charge warning
indicator to light.
Engine Electrical 6-43
24V Voltmeter
Voltage is available through CKT 901 (ORN) wire of the
voltmeter relay. When the ignition switch is placed in
the ON position voltage is applied to the power
converter 24V regulator that provides voltage to the
voltmeter relay. The voltmeter is grounded at G200
through the convenience center.
The voltmeter needle should be in the green band
during normal load operation. During no load situation
the voltmeter needle should be between the yellow and
green bands.
For vehicles with the diesel engine, the tachometer
input is sensed at pin P of the generator. Generator
connector cavity A connects to generator pin P to send
the pulsing voltage signal to pin 6 of the instrument
cluster through the CKT 121 (WHT) wire. The
instrument cluster converts the voltage frequency to
engine rpm.
Power Converter Regulator
Battery voltage is available at all times through the 24V
circuit breaker which is located on the LF fender
bracket. Voltage is made available through CKT 900
(RED) to stud A of the power converter regulator.
When the ignition switch is placed in START the power
converter 24V stud A and the ignition stud B provide
voltage to the voltmeter relay. Stud C of the power
converter protector connector. The power converter
regulator is grounded at G112 and the voltmeter relay
is grounded through the power converter regulator.
The power converter regulator converts 12V to 24V to
provide voltage throughout the entire vehicle. The
power converter is equipped with replaceable fuse links
to protect against reverse polarity and output shorts to
ground conditions. The 24V source is used only in
military auxiliary equipment and military radio eqipment.
Battery Equalizer
The primary function of the Battery Equalizer is to
maintain battery balance or equalization charge in a
predominately 24V system which requires clean,
regulated 12V power. The Battery Equalizer can
deliver up to 150 amps of continuous, clean 12V
current for practically any 12V load, such as two-way
radios, blackout lighting and other military options.
2001/02 LSSV Truck
Body and Accessories
Table of Contents 8-1
Section 8
Body and Accessories
Wiring Systems..........................................8-3
Specifications ........................................................8-3
Schematic and Routing Diagrams.......................8-3
Component Locator ............................................8-10
Power and Grounding Component Views .........8-13
Connector End Views .........................................8-25
Power and Grounding Connector End Views....8-25
Repair Instructions..............................................8-32
Auxiliary Lamp Harness Replacement - Front...8-32
Auxiliary Lamp Extension Harness
Replacement – Rear ..................................8-33
Lamp Harness Replacement – Rear .................8-34
Trailer Wiring Harness Replacement.................8-35
Winch Connector/Harness Replacement –
Front ...........................................................8-36
Winch Connector/Harness Replacement –
Rear............................................................8-37
Relay Mounting Bracket Replacement ..............8-37
Description and Operation .................................8-39
Wiring Description..............................................8-39
Lighting Systems.....................................8-40
Specifications ......................................................8-40
Schematic and Routing Diagrams.....................8-40
Component Locator ............................................8-54
Lighting Systems Component Views .................8-54
Connector End Views .........................................8-63
Lighting Systems Connector End Views............8-63
Diagnostic Information and Procedures...........8-66
Symptom List .....................................................8-66
Repair Instructions..............................................8-76
Headlamp Replacement – Blackout (B/O).........8-76
Headlamp Bulb Replacement – Blackout (B/O) 8-76
Marker Lamp Replacement – Front
Blackout (B/O) ............................................8-77
Marker Lamp Replacement – Rear
Blackout (B/O) ............................................8-78
IP Compartment Lamp Replacement –
Voltmeter ....................................................8-80
Description and Operation .................................8-81
Blackout (B/O) Lighting Circuit of Operation .....8-81
Backup Lights ....................................................8-81
Instrument Panel, Gages and Console ..8-84
Specifications ......................................................8-84
Repair Instructions..............................................8-85
Voltmeter Replacement .....................................8-85
Voltmeter, Blackout (B/O) Switch Panel
Replacement ..............................................8-85
Blackout (B/O) Switch Replacement .................8-86
Description and Operation .................................8-88
Instrument Panel and Gages Description..........8-88
Horns ........................................................8-89
Schematic and Routing Diagrams.....................8-89
Diagnostic Information and Procedures...........8-91
Symptom List .....................................................8-91
Description and Operation................................. 8-94
Horn with Blackout (B/O) Control Circuit
Operation ................................................... 8-94
Exterior Trim ............................................8-95
Specifications...................................................... 8-95
Repair Instructions ............................................. 8-96
Radiator Grille Replacement ............................. 8-96
Description and Operation................................. 8-98
Exterior Trim Description................................... 8-98
Bumpers...................................................8-99
Specifications...................................................... 8-99
Repair Instructions ........................................... 8-100
Front Bumper Replacement
(Tahoe/Suburban).................................... 8-100
Front Bumper Replacement (Pickup Models) . 8-101
Radiator Grille Brush Guard Replacement ..... 8-103
Clevis/Tie-Down Replacement – Front ........... 8-103
Clevis/Tie-Down Support Replacement –
Front (Pickup Models).............................. 8-104
Clevis/Tie Down Support Replacement –
Front (Utility) ............................................ 8-105
Bumper Replacement – Rear (Factory Hitch). 8-106
Bumper Replacement – Rear (Military Hitch) . 8-109
Clevis/Tie-Down Support Replacement –
Rear Factory Hitch (Pickup Models) ........ 8-112
Clevis/Tie-Down Bracket Replacement –
Rear (Utility/Extended Cab) ..................... 8-112
Clevis/Tie-Down Bracket Replacement –
Rear (Crewcab)........................................ 8-113
Pintle Hook Replacement................................ 8-114
Clevis/Tie-Down Replacement – Rear............ 8-114
Description and Operation............................... 8-116
Bumpers .......................................................... 8-116
Body Front End......................................8-117
Specifications.................................................... 8-117
Repair Instructions ........................................... 8-118
Slave Connector Replacement ....................... 8-118
Winch Mount Replacement (Pickup Models) .. 8-118
Winch Replacement (Pickup Models) ............. 8-119
Description and Operation............................... 8-121
Body Front End Description ............................ 8-121
Seats.......................................................8-122
Specifications.................................................... 8-122
Repair Instructions ........................................... 8-123
Seat Replacement – Troop (Pickup Models) .. 8-123
Description and Operation............................... 8-124
Troop Seats Description.................................. 8-124
Interior Trim ...........................................8-125
Specifications.................................................... 8-125
Repair Instructions ........................................... 8-126
Rear Compartment Side Trim Panel
Replacement (Tahoe/Suburban) ............. 8-126
Floor Mat Replacement (Pickup Models)........ 8-128
Floor Mat Replacement (Tahoe/Suburban) .... 8-129
2001/02 LSSV Truck
8-2 Table of Contents
Government Vehicle Data Plate
Replacement ............................................8-130
Weapons Support Replacement – Lower........8-131
Weapons Mount Replacement – Upper ..........8-132
Weapons Mount Replacement – Floor Mount.8-132
24 Voltmeter Relay Replacement
(Pickup Models)........................................8-133
24 Voltmeter Relay Replacement (Tahoe) ......8-134
24 Voltmeter Relay Replacement (Suburban).8-135
Contactor Replacement (Pickup Models) ........8-136
Contactor Replacement (Tahoe) .....................8-138
Contactor Replacement (Suburban)................8-138
Power Converter/Bracket Replacement
(Pickup Models)........................................8-140
Power Converter Replacement (Tahoe)..........8-141
Power Converter Replacement (Suburban) ....8-142
Battery Equalizer/Bracket Replacement
(Pickup Models)........................................8-143
Battery Equalizer Replacement (Tahoe) .........8-144
Battery Equalizer Replacement (Suburban)....8-145
Power Converter/Equalizer Bracket
Replacement (Tahoe)...............................8-146
Power Converter/Equalizer Bracket
Replacement (Suburban) .........................8-147
Description and Operation ...............................8-149
Interior Description...........................................8-149
Body Rear End .......................................8-150
Specifications ....................................................8-150
2001/02 LSSV Truck
Body and Accessories
Repair Instructions ........................................... 8-151
License Plate Bracket Replacement ............... 8-151
Cargo Cover Side Rail and Hinge
Replacement............................................ 8-151
Cargo Cover Front End Rail Replacement ..... 8-153
Cargo Cover Rear End Rail Replacement ...... 8-154
Cargo Cover Strut Replacement..................... 8-155
Cargo Cover Top Bows Replacement ............ 8-156
Cargo Cover Replacement.............................. 8-157
Fiberglass Top Replacement .......................... 8-157
Cargo Tie-Down Eye Replacement ................ 8-158
Cargo Cover Stowage Replacement .............. 8-159
Description and Operation............................... 8-160
Body Rear End................................................ 8-160
Paint/Coatings .......................................8-161
Paint Codes ....................................................... 8-161
Frame and Underbody ..........................8-162
Specifications.................................................... 8-162
Repair Instructions ........................................... 8-163
Military Rear Receiver Hitch Replacement ..... 8-163
Front Winch Receiver Replacement ............... 8-163
Description and Operation............................... 8-165
Frame and Underbody Description ................. 8-165
Body and Accessories
Wiring 8-3
Wiring Systems
Specifications
Fastener Tightening Specifications
Specifications
Application
Metric
English
Battery Cable Connections
17 N•m
13 lb ft
Fender Brace Bolts
25 N•m
18 lb ft
Trailer Wiring Harness Bracket Bolts
5 N•m
4 lb ft
Schematic and Routing Diagrams
2001/02 LSSV Truck
8-4 Wiring
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Wiring 8-5
2001/02 LSSV Truck
8-6 Wiring
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Wiring 8-7
2001/02 LSSV Truck
8-8 Wiring
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Wiring 8-9
2001/02 LSSV Truck
8-10 Wiring
Body and Accessories
Component Locator
Power and Grounding Components
Name
Battery Booster
Connector
Battery, LH
Blackout Control Relay
Blackout Headlamp
Location
In the grille, near the RH headlamp
At the LF engine compartment
Locator View
Connector End View
Engine Electrical
Component Views in
Engine Electrical
___
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
Inline auxiliary IP harness
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
At the LH of the grille
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Blackout Lighting Control On the auxiliary IP, behind the brake
Relay
booster
Blackout Service Drive
Switch
In the center lower IP
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Blackout Switch
(Headlamp)
In the center lower IP
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Blackout Stop/Marker
Lamp, LH
In the left front grille
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Blackout Stop/Marker
Lamp, RH
In the left front grille
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Blackout Stop/Marker
Lamp, LR
At the LH of the rear bumper
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Blackout Stop/Marker
Lamp, RR
At the RH of the rear bumper
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Circuit Breaker 12V
In the engine compartment, on the LH
fender brace
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Circuit Breaker 24V
In the engine compartment, on the LH
fender brace
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Between Converter and Equalizer
Engine Electrical
Component Views in
Engine Electrical
Engine Electrical
Component Views in
Engine Electrical
Inline auxiliary IP, 10 cm right of IP jumper
harness breakout
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
Power Converter
Protector Relay
Fuse B (Inline)
2001/02 LSSV Truck
Body and Accessories
Wiring 8-11
Power and Grounding Components (cont’d)
Name
Locator View
Connector End View
Left of RH battery
Engine Electrical
Component Views in
Engine Electrical
Engine Electrical
Connector End Views in
Engine Electrical
On the LR body panel
Engine Electrical
Component Views in
Engine Electrical
Engine Electrical
Connector End Views in
Engine Electrical
Engine Electrical
Component Views in
Engine Electrical
Engine Electrical
Connector End Views in
Engine Electrical
Near the center of the rear bumper
Lighting Component
Views in Lighting
Systems
Lighting Connector End
Views in Lighting
Systems
24 Voltmeter Lamp
Mounted in the lower center IP
Engine Electrical
Component Views in
Engine Electrical
Engine Electrical
Connector End Views in
Engine Electrical
24 Voltmeter Relay
On the power converter
Engine Electrical
Component Views in
Engine Electrical
Engine Electrical
Connector End Views in
Engine Electrical
Junction Block
Power Converter (Utility)
Location
Power Converter (Pickup) Rear body panel – behind seat
Trailer Harness
Connector
C133
In the upper LH of engine compartment
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C134
In the upper LH of engine compartment
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C135
In the lower LH of engine compartment
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C202A
In auxiliary IP harness at stoplamp switch
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C202B
In auxiliary IP harness at stoplamp switch
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C155
Interrupt relay block RH engine
compartment
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C135
Interrupt relay block RH engine
compartment
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C241
To convenience center
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C932
Center under endgate to RR lamp
extension
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C917
Center under endgate, inline to trailer
harness
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C993
Center under endgate, inline to trailer
harness
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C191
Interrupt harness RH engine compartment
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
C192
Interrupt harness RH engine compartment
Wiring Component
Wiring Connector End
Views in Wiring Systems Views in Wiring Systems
G113
On the radiator support, near the LH
headlamp
Lighting Component
Views in Lighting
Systems
___
2001/02 LSSV Truck
8-12 Wiring
Body and Accessories
Power and Grounding Components (cont’d)
Name
Location
Locator View
Connector End View
G123
The LF stud on the intake manifold
Lighting Component
Views in Lighting
Systems
___
G200
Behind the LH of the IP, below the IP fuse
block
Lighting Component
Views in Lighting
Systems
___
G401
At the LR frame rail, behind the bumper
Lighting Component
Views in Lighting
Systems
___
P103
On the rear of the IP, behind the brake
booster
___
___
S102
Approx. 31.5 cm left of blackout headlamp
breakout
___
___
S105
Approx. 31.5 cm right of blackout
headlamp breakout
___
___
S223
Approx. 21.5 cm left of blackout headlamp
switch
___
___
S224
Approx. 36.5 cm left of inline IP harness
connector breakout
___
___
S229
Approx. 31.0 cm left of inline IP harness
connector breakout
___
___
S281
Approx. 46.5 cm right of inline IP harness
connector breakout
___
___
S282
Approx. 34.5 cm right of inline IP harness
connector breakout
___
___
S402
Approx. 25 cm left of trailer connection
jumper
___
___
S403
Approx. 40.0 cm left of taillamp extension
breakout
___
___
S407
Approx. 45.0 cm left of trailer connector
jumper harness breakout
___
___
S408
Approx. 37.5 cm right of taillamp extension
breakout
___
___
Approx. 45 cm right of taillamp extension
breakout
___
___
Approx. 5 cm right of trailer connection
jumper
___
___
S412 (Fleetside)
S422
2001/02 LSSV Truck
Body and Accessories
Wiring 8-13
Power and Grounding Component Views
Rear Lamp Harness
Legend
(1) C992
(2) Auxiliary Rear Lamp Extension Harness
(3) Rear Lamp Extension Harness
(4) Taillamp Connector
(5) To B/O Marker Lamp, RH
(6) C917
(7) C993
(8) To B/O Marker Lamp, LH
(9) Ground
2001/02 LSSV Truck
8-14 Wiring
Body and Accessories
Forward Blackout (B/O) Lamp Harness
Legend
(1) C192
(2) Forward Lamp Harness
(3) G113
2001/02 LSSV Truck
(4) To B/O Headlamp
(5) To B/O Marker Lamp, LF
(6) To B/O Marker Lamp, RF
Body and Accessories
Wiring 8-15
Voltmeter and Lamp
Legend
(1) Voltmeter Bracket
(2) Mounting Bracket
(3) Voltmeter Connector
(4) Voltmeter (24V)
(5) Voltmeter Illumination Bulb
(6) Harness Connector
2001/02 LSSV Truck
8-16 Wiring
Body and Accessories
Slave Start Harness Routing
Legend
(1) Slave Start Receptacle
(2) Negative Cable
2001/02 LSSV Truck
(3) Negative Connection to Engine Block
(4) Positive Cable to Junction Block
Body and Accessories
Wiring 8-17
Winch Harness Routing Rear
Legend
(1) Harness to Junction Block
(2) Winch Connector
(3) Rear Frame
2001/02 LSSV Truck
8-18 Wiring
Body and Accessories
Power Converter
Legend
(1) Ground Terminal
(2) 12V Terminal
(3) 24V Terminal
2001/02 LSSV Truck
(4) Fuse Link Covers
(5) Ignition Terminal
(6) Power Converter
Body and Accessories
Wiring 8-19
Battery Equalizer
Legend
(1) 24V Terminal
(2) 12V Terminal
(3) Ground Terminal
(4) Battery Equalizer
(5) LED Status Indicator
2001/02 LSSV Truck
8-20 Wiring
Body and Accessories
Converter Protection Contactor (Starter Relay)
Legend
(1) Boot
(2) 24V Equalizer Stud
(3) Contactor (Starter Relay)
(4) 24V Converter Stud
(5) Engine Wiring Harness
2001/02 LSSV Truck
(6) From the Ignition Stud (Power Converter)
(7) Ground from Power Converter
(8) From 24V Circuit Breaker
(9) From Circuit Breaker 24V Converter Stud
Body and Accessories
Wiring 8-21
Front Winch Harness Routing
Legend
(1) Positive Cable Connection
(2) Negative Cable Connection
(3) To Rear Winch Connector
(4) Front Winch Connector
(5) Front Winch Harness
(6) 12V Battery
2001/02 LSSV Truck
8-22 Wiring
Body and Accessories
24V Battery Booster and Starter Cable Junction Block
Legend
(1) Positive Batter Cable
(2) Junction Block
(3) Alternator Output Cable
2001/02 LSSV Truck
(4) Junction Block Post Nut
(5) Positive Winch Cable Permanent Mount
(6) Junction Block Post
Body and Accessories
Wiring 8-23
Junction Block – IP
Legend
(1) Cavity A
(2) Cavity F
(3) Cavity E
(4) Junction Block – IP
(5) C-9 Connector Location
(6) To Underhood Relay Harness
(7) C-4 Connector Location
2001/02 LSSV Truck
8-24 Wiring
Body and Accessories
24V Battery Booster Connector
Legend
(1) ) Battery Positive Ground (RED)
(2) Booster Connector Assembly
2001/02 LSSV Truck
(3) Battery Negative Ground (BLK)
Body and Accessories
Wiring 8-25
Inline Harness Connector C134
Connector End Views
Power and Grounding Connector
End Views
Inline Harness Connector C133
Connector Part
Information
Connector Part
Information
•
12089040
•
2-Way M Weather Pack
TWR (MED GRY)
Circuit No.
Pin
Wire
Color
A
BRN/WHT
900B
B
DK GRN/
WHT
902
•
12010973
•
2-Way F Weather Pack
SHD (BLK)
Wire
Color
Circuit No.
Pin
A
TAN/WHT
901
B
BRN/
WHT
900A
Function
Function
B/O Head Lamp
B/O Marker Lamps
Inline Harness Connector C134
B/O Marker Lamps
B/O Stop Lamps
Inline Harness Connector C133
Connector Part
Information
Connector Part
Information
•
12034074
•
2-Way F Weather Pack
TWR (MED GRY)
Circuit No.
Pin
Wire
Color
A
BRN/WHT
900B
B
DK GRN/
WHT
902
Function
•
12015792
•
2-Way M Weather Pack
TWR (BLK)
Wire
Color
Circuit No.
Pin
Function
A
TAN/WHT
901A
B/O Head Lamp
B
BRN/
WHT
900A
B/O Marker Lamps
B/O Marker Lamps
B/O Stop Lamps
2001/02 LSSV Truck
8-26 Wiring
Body and Accessories
Inline Harness Connector C992
Connector Part
Information
•
12010973
•
2-Way F Weather Pack
SHD (BLK)
Wire
Color
Circuit No.
Pin
A
BRN/WHT
900B
B
DK GRN/
WHT
902
Inline Harness Connector C992
Connector Part
Information
Function
•
2-Way M Weather Pack
TWR (BLK)
Wire
Color
Circuit No.
B/O Marker Lamps
A
BRN/WHT
900A
B/O Marker Lamps
B/O Stop Lamps
B
DK GRN/
WHT
902A
B/O Stop Lamps
•
12010717
•
3-Way F Weather Pack
TWR (BLK)
Function
Inline Harness Connector C917
Connector Part
Information
•
12015793
•
3-Way M Weather Pack
TWR (BLK)
Wire
Color
Circuit No.
Pin
B/O Marker Lamps
A
BRN
900D
B/O Marker Lamps
18C
S/T Lamp Feed
B
YEL
18C
S/T Lamp Feed
150C
Ground
C
BLK
150C
Ground
Wire
Color
Circuit No.
Pin
A
BRN/WHT
900D
B
YEL
C
BLK
2001/02 LSSV Truck
12015792
Pin
Inline Harness Connector C917
Connector Part
Information
•
Function
Function
Body and Accessories
Wiring 8-27
Inline Harness Connector C993
Connector Part
Information
•
12010717
•
3-Way F Weather Pack
SHD (BLK)
Inline Harness Connector C993
Connector Part
Information
12015793
•
3-Way M Weather Pack
SHD (BLK)
Wire
Color
Circuit No.
Pin
Park Lamp Feed
A
BRN
9B
Park Lamp Feed
902D
B/O Stop Lamps
B
PPL
902D
B/O Stop Lamps
C
PPL
19C
S/T Lamp Feed – RR
19C
S/T Lamp Feed – RR
Wire
Color
Circuit No.
Pin
A
GRN
9B
B
DK GRN/
WHT
C
BRN
Function
Connector Part
Information
•
12020832
•
4-Way F Weather Pack
TWR (BLK)
Circuit No.
Pin
Wire
Color
Function
A
BRN
9A
Park Lamps
B
YEL
18C
S/T Lamps
C
BLK
1500
Ground
D
DK GRN
19C
S/T Lamps
Function
Inline Harness Connector C932
Inline Harness Connector C932
Connector Part
Information
•
•
12020830
•
4-Way M Weather Pack
SHD (BLK)
Wire
Color
Circuit No.
Pin
Function
A
BRN
2109
Park Lamps
B
YEL
1618
S/T Lamps
C
WHT
22
D
DK GRN
1619
Ground
S/T Lamps
2001/02 LSSV Truck
8-28 Wiring
Body and Accessories
Inline Harness Connector C202A
Connector Part
Information
•
12064998
•
8-Way F M/P Series 280
(BLK)
Wire
Color
Circuit No.
Pin
A
BRN
441
B
PPL
C
Inline Harness Connector C202A
Connector Part
Information
Function
•
15358651
•
8-Way M M/P Series 280
(BLK)
Wire
Color
Circuit No.
Pin
Pass Thru Circuit
A
BRN
441
Pass Thru Circuit
420
Pass Thru Circuit
B
PPL
420
Pass Thru Circuit
BLU
1134
Pass Thru Circuit
C
LT BLU
1134
Pass Thru Circuit
D
GRN/
WHT
1135
Pass Thru Circuit
D
DK GRN/
WHT
1135
Pass Thru Circuit
E
ORN
1540
Pass Thru Circuit
E
ORN
1540
Pass Thru Circuit
F
WHT
913
Stop Lamp Switch
Signal
F
WHT
17
Stop Lamp Switch
Signal
G
LT GRN
584
Pass Thru Circuit
G
LT GRN
584
Pass Thru Circuit
H
GRY
48
Pass Thru Circuit
H
GRY
48
Pass Thru Circuit
Inline Harness Connector C155
Connector Part
Information
•
12129136
•
4-Way F Flex-Lock 280
Series (BLK)
Wire
Color
Circuit No.
Pin
A
ORN
240
B
WHT
C
D
Function
Inline Harness Connector C155
Connector Part
Information
Function
•
12129135
•
4-Way M M/P 280 Series
(BLK)
Wire
Color
Circuit No.
Pin
Park Lamps
A
ORN/BLK
240B
Park Lamps
352
Head Lamps
B
WHT
352B
Head Lamps
ORN
40
CTSY Lamps
C
ORN
40B
CTSY Lamps
PNK
839
Back Up Lamps
D
PNK
839B
Back Up Lamps
2001/02 LSSV Truck
Function
Body and Accessories
Wiring 8-29
Inline Harness Connector C202B
Connector Part
Information
•
12064998
•
8-Way F M/P Series 280
(BLK)
Wire
Color
Circuit No.
Pin
A
BRN
441
B
PPL
C
Inline Harness Connector C202B
Connector Part
Information
Function
•
15358651
•
8-Way M M/P Series 280
(BLK)
Wire
Color
Circuit No.
Pin
Pass Thru Circuit
A
BRN
441
Pass Thru Circuit
420
Pass Thru Circuit
B
PPL
420
Pass Thru Circuit
LT BLU
1134
Pass Thru Circuit
C
BLU
1134
Pass Thru Circuit
D
DK GRN/
WHT
1135
Pass Thru Circuit
D
LT GRN/
WHT
1135
Pass Thru Circuit
E
ORN
1540
Pass Thru Circuit
E
ORN
1540
Pass Thru Circuit
F
WHT
17
Stop Lamp Signal
F
WHT
17
Stop Lamp Switch
G
LT GRN/
BLK
584
Pass Thru Circuit
G
LT GRN
584
Pass Thru Circuit
H
GRY
48
Pass Thru Circuit
H
GRY
48
Pass Thru Circuit
Inline Harness Connector C135
Inline Harness Connector C135
Connector Part
Information
Connector Part
Information
•
12129081
•
2-Way F Flex-Lock
280 Series (BLK)
Circuit No.
Pin
Wire
Color
Function
A
DK BLU
545
DRL
B
DK GRN
1329
Horn
Function
•
12129155
•
2-Way M M/P 280 Series
(BLK)
Wire
Color
Circuit No.
Pin
Function
A
DK BLU
545A
DRL
B
DK GRN
1329B
Horn
2001/02 LSSV Truck
8-30 Wiring
Body and Accessories
Inline Harness Connector C192
Connector Part
Information
•
12010973
•
2-Way F Weather Pack
SHD (BLK)
Wire
Color
Circuit No.
Pin
A
PNK
139A
Ignition 1 Voltage In
B
PNK/
WHT
139B
Ignition 1 Voltage Out
Inline Harness Connector C192
Connector Part
Information
Function
Pin
A
Wire
Color
•
12015791
•
1-Way F Weather Pack
(BLK)
Circuit No.
RED
2001/02 LSSV Truck
912A
•
2-Way M Weather Pack
TWR (BLK)
Wire
Color
Circuit No.
Function
A
PNK
139A
Turn Signal Relay Pin
87
B
PNK/
BLK
139B
Turn Signal Relay Pin
30
Inline Harness Connector C191
Connector Part
Information
Function
Power to Relay
Module
12015792
Pin
Inline Harness Connector C191
Connector Part
Information
•
•
12010996
•
1-Way M Weather Pack
(BLK)
Wire
Color
Circuit No.
Pin
A
ORN
912A
Function
Power to Relay
Module
Body and Accessories
Wiring 8-31
Junction Block Body C241
Connector Part
Information
•
12193930
•
6-Way F M/P Series 280
Series (BLK)
Wire
Color
Circuit No.
Pin
Function
A
___
___
Not Used
B
___
___
Not Used
C
___
___
Not Used
D
ORN
40A
Service Lamp Switch
Power
E
___
___
Not Used
F
___
___
Not Used
2001/02 LSSV Truck
8-32 Wiring
Body and Accessories
Repair Instructions
Auxiliary Lamp Harness Replacement Front
Removal Procedure
1. Remove the radiator grille. Refer to Radiator Grille
Replacement in Exterior Trim.
2. Remove the filler panel.
3. Trace the auxiliary harness connections to the original
harness.
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
4. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
5. Remove the connector from the right hand blackout
marker lamp (6) and the left hand blackout marker lamp
(5) and the ground nut to the ground lead and all tie wraps
connecting the auxiliary harness.
6. Remove connector (4) and ground from blackout
headlamp mounting stud.
7. Trace the auxiliary harness under the washer fluid
reservoir and remove the tie wrap along the fender
interior.
8. Trace the auxiliary harness under the battery tray area
and remove the wrap.
9. Remove the forward auxiliary harness (2) from the
vehicle.
10. Remove the tie wraps near the bulkhead and disconnect
the forward connector of the auxiliary harness from the
auxiliary IP harness connector and tie wrap holding it to
the harness connector.
Installation Procedure
1. Connect the forward connector of the auxiliary harness to
the auxiliary IP harness connector and attach the tie
wraps.
2. Install the forward auxiliary harness (2) to the vehicle.
3. Install the auxiliary harness under the battery tray area
and install the tie wrap.
4. Install the auxiliary battery and tray. Make modifications
using a drill, drill holes to allow the mounting of the tray.
Refer to Battery Tray Replacement in the 2001/02 C/K
Truck service manual.
5. Install the auxiliary harness under the washer fluid
reservoir area and install the tie wrap along the fender
interior.
6. Install the connector to the right hand blackout marker
lamp (6) and the left hand blackout marker lamp (5) and
the ground nut to the ground lead and all tie wraps
connecting the auxiliary harness.
2001/02 LSSV Truck
Body and Accessories
Wiring 8-33
7. Install connector (4) and the ground to blackout headlamp
mounting stud.
Notice: Refer to Fastener Notice in Cautions and Notices.
8. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
9. Install the filler panel.
10. Install the auxiliary harness connections to the original
harness.
11. Install the radiator grille. Refer to Radiator Grille
Replacement in Exterior Trim.
Auxiliary Lamp Extension Harness
Replacement – Rear
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Access the auxiliary rear lamp extension harness from the
engine compartment at the left side of the bulkhead.
3. Remove the connector (3) from the IP auxiliary harness
and tie wrap connecting to the forward lamp harness.
Caution: Refer to Vehicle Lifting Caution in Cautions and
Notices.
4. Raise and support the vehicle on a hoist and trace the
auxiliary rear lamp harness extension along the path of
the existing harness and vehicle frame.
5. Remove the connector to the rear lamp harness.
2001/02 LSSV Truck
8-34 Wiring
Body and Accessories
Installation Procedure
1. Install the connector to the rear lamp harness.
2. Remove supports and lower the vehicle and install the
auxiliary rear lamp harness extension along the path of
the existing harness and vehicle frame.
3. Install the connector (3) to the IP auxiliary harness and tie
wrap holding to the forward lamp harness.
4. Install the auxiliary rear lamp extension harness to the
engine compartment location at the left side of the
bulkhead.
Notice: Refer to Fastener Notice in Cautions and Notices.
5. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
Lamp Harness Replacement – Rear
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the rear lamp harness connector from the left tail
lamp connector.
3. Remove the ground lead and connector for the left
blackout marker lamp.
4. Remove the vehicle ground lead bolt, washer and harness
ground.
5. Remove the rear lamp harness connector from the
auxiliary rear lamp extension harness.
6. Remove the rear lamp harness connector from the rear
lamp extension harness.
7. Remove the two rear lamp harness connectors (7, 8) from
the trailer jumper.
8. Remove the ground lead nut, ground lead and connector
from the right blackout marker lamp.
9. Remove the rear lamp harness connector from the right
and left taillamp connectors.
2001/02 LSSV Truck
Body and Accessories
Wiring 8-35
Installation Procedure
1. Install the rear lamp harness connector to the right and
left taillamp connectors.
2. Install the ground lead nut, ground lead and connector to
the right blackout marker lamp.
3. Install the two-rear lamp harness connectors (7, 8) to the
trailer jumper.
4. Install the rear lamp harness connector to the auxiliary
rear lamp extension harness.
5. Install the rear lamp harness connector to the auxiliary
rear lamp extension harness.
6. Install the vehicle ground lead bolt, washer and harness
ground.
Important: For the Utility models: Route the ground lead over
the rear lamp harness connectors. For the Pickup models:
Route the ground lead to the hole in the left frame rail.
7. Install the ground lead and connector for the left blackout
marker lamp.
8. Install the rear lamp harness connector to the left taillamp
connector.
Notice: Refer to Fastener Notice in Cautions and Notices.
9. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
Trailer Wiring Harness Replacement
Removal Procedure
1. Remove the rear bumper. Refer to Bumper Replacement
- Rear or Bumper Replacement – Rear (Military Hitch) in
Bumpers.
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
2. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
3. Remove the two trailer connections (2, 3) from the rear
lamp wiring harness jumpers.
4. Remove the four bolts, washers and nuts holding the
harness assembly mounting bracket (4) and door (5) to
the rear bumper.
5. Remove the trailer wiring harness through the hole.
2001/02 LSSV Truck
8-36 Wiring
Body and Accessories
Installation Procedure
1. Insert the harness through the harness hole.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install the four bolts, washers and nuts holding the
harness assembly mounting bracket (4) and door (5) to
the rear bumper.
Tighten
Tighten the four bolts to 5 N•m (4 lb ft).
3. Install the two trailer connectors (2,3) to the rear lamp
harness connectors.
4. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
5. Install the rear bumper. Refer to Bumper Replacement –
Rear or Bumper Replacement – Rear (Military Hitch) in
Bumpers.
Winch Connector/Harness Replacement –
Front
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V of the left battery.
2. Remove bolt (1) securing the electrical connector (2) to
the front receiver.
3. Remove ty-wraps securing cables. Note routing for
installation.
4. Remove cable connections at the junction block.
Installation Procedure
1. Install cable connections at the junction block.
2. Route cable in same locations as removed and ty-wrap.
3. Install connector (2) on receiver and tighten bolt (1).
Notice: Refer to Fastener Notice in Cautions and Notices.
4. Install the negative battery cable of the right battery and
the 12V and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
2001/02 LSSV Truck
Body and Accessories
Wiring 8-37
Winch Connector/Harness Replacement –
Rear
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V of the left battery.
2. Remove bolts (1) securing connector (2) to frame.
3. Remove ty-wraps securing harness. Note routing for
installation.
4. Remove cable from junction block.
Installation Procedure
1. Install harness in original routing locations and secure
with ty-wraps.
2. Install cable ends to the junction block and tighten.
3. Install connector (2) to the frame install bolts (1) and
tighten.
Notice: Refer to Fastener Notice in Cautions and Notices.
4. Install the negative battery cable of the right battery and
the 12V and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
Relay Mounting Bracket Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the left fender upper brace.
3. Remove top cover (2).
4. Remove the electrical center cover assemble by lifting the
cover (3) outwards to clear the tabs.
2001/02 LSSV Truck
8-38 Wiring
Body and Accessories
5. Drill out the rivets (2) and remove bracket (1).
Installation Procedure
1. Rivet the bracket (1) to the electrical center cover.
2. Set the electrical center block in its resting position till the
tabs (3) lock into place.
3. Install the lower part of the cover (1).
4. Install the upper cover (2).
5. Install the fender upper brace.
Notice: Refer to Fastener Notice in Cautions and Notices.
6. Install the 4 fender upper brace bolts.
Tighten
Tighten the 4 retaining bolts to 25 N•m (18 lb ft).
7. Install the negative battery cable of the right battery and
the 12V and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
2001/02 LSSV Truck
Body and Accessories
Wiring 8-39
Description and Operation
Wiring Description
Several changes offered by the military options require
new wiring configurations. Auxiliary wiring attaches to
the original wiring providing power to the blackout
lighting, the slave receptacle, the power
converter/voltage regulator, and the circuit breakers
and relays. All auxiliary harnesses are outlined in
schematics. Several are described in repair
procedures in this manual.
Access to fuses can be found on the power
converter/voltage regulator, under the dash and under
the hood.
2001/02 LSSV Truck
8-40 Lighting Systems
Body and Accessories
Lighting Systems
Specifications
Fastener Tightening Specifications
Specification
Application
Metric
English
Battery Cable Connections
17 N•m
13 lb ft
Blackout Headlamp Stud Nut
10 N•m
7 lb ft
Front Blackout Marker Lamp Nuts
2 N•m
1.5 lb ft
Rear Blackout Lamp Nuts
2 N•m
1.5 lb ft
2.8 N•m
2.0 lb ft
Voltmeter Lamp Nuts
Schematic and Routing Diagrams
2001/02 LSSV Truck
Body and Accessories
Lighting Systems 8-41
2001/02 LSSV Truck
8-42 Lighting Systems
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Lighting Systems 8-43
2001/02 LSSV Truck
8-44 Lighting Systems
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Lighting Systems 8-45
2001/02 LSSV Truck
8-46 Lighting Systems
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Lighting Systems 8-47
2001/02 LSSV Truck
8-48 Lighting Systems
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Lighting Systems 8-49
2001/02 LSSV Truck
8-50 Lighting Systems
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Lighting Systems 8-51
2001/02 LSSV Truck
8-52 Lighting Systems
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Lighting Systems 8-53
2001/02 LSSV Truck
8-54 Lighting Systems
Body and Accessories
Component Locator
Lighting Systems Component Views
Trailer Wiring Harness
Legend
(1) Bumper
(2) C197
(3) C993
2001/02 LSSV Truck
(4) Trailer Connector
(5) Trailer Connector Cover
Body and Accessories
Lighting Systems 8-55
Trailer Wiring Harness Factory Receiver
Legend
(1) Rear Bumper
(2) Factory Receiver
(3) C917
(4) Trailer Connector
(5) Connector Cover
(6) C993
2001/02 LSSV Truck
8-56 Lighting Systems
Body and Accessories
Rear Lamp Harness
Legend
(1) C992
(2) Auxiliary Rear Lamp Extension Harness
(3) Rear Lamp Extension Harness
(4) Taillamp Connector
(5) To B/O Marker Lamp, RH
2001/02 LSSV Truck
(6) C917
(7) C993
(8) To B/O Marker Lamp, LH
(9) Ground
Body and Accessories
Lighting Systems 8-57
Auxiliary Rear Lamp Harness (Pickup Shown, Utility Similar)
Legend
(1) C992
(2) Auxiliary Rear Lamp Harness
(3) C133
2001/02 LSSV Truck
8-58 Lighting Systems
Body and Accessories
Forward Blackout (B/O) Lamp Harness
Legend
(1) C192
(2) Forward Lamp Harness
(3) G113
2001/02 LSSV Truck
(4) To B/O Headlamp
(5) To B/O Marker Lamp, LF
(6) To B/O Marker Lamp, RF
Body and Accessories
Lighting Systems 8-59
Rear Blackout (B/O) Lamps
Legend
(1) B/O Lamp Assembly
(2) Rear Bumper
(3) Rear Lamp Harness Connector
2001/02 LSSV Truck
8-60 Lighting Systems
Body and Accessories
Front Blackout (B/O) Marker Lamps
Legend
(1) B/O Lamp Assembly
(2) Front Grille
2001/02 LSSV Truck
(3) Forward Lamp Harness
Body and Accessories
Lighting Systems 8-61
Blackout (B/O) Headlamp
Legend
(1) Brace Assembly
(2) Blackout Headlamp
(3) Wiring Harness Connector
(4) Ground Lead
(5) Fastening Nut
2001/02 LSSV Truck
8-62 Lighting Systems
Body and Accessories
Relay Block
Legend
(1) Back Up Lamp Relay
(2) Park Lamp Relay
(3) CTSY Relay
(4) Harness TXO 17535
2001/02 LSSV Truck
(5) Headlamp Relay
(6) DRL Relay
(7) Horn Relay
Body and Accessories
Lighting Systems 8-63
B/O Drive Lamp Switch
Connector End Views
Lighting Systems Connector End
Views
B/O Control Relay
Connector Part
Information
Connector Part
Information
•
08911352
•
5-Way F Series 56
(BLK)
Pin
Wire
Color
Circuit
No.
A
___
___
B
TAN/
WHT
901E
B/O Drive Lamp
C
PNK
911B
Power to B/O Control
Switch to B/O Relay
Feed
B/O Drive Lamp
D
WHT
915
E
BLK
150C
•
12129716
•
5-Way F M/P Series
630 (BLK)
Pin
Wire
Color
Circuit
No.
Function
86
WHT
915
B/O Relay Feed from
B/O Control Switch
85
TAN/WHT
901B
87
PNK
911
Power to B/O
Controls
30
BRN/WHT
901
B/O Drive Lamp
Function
Not Used
B/O Stop Lamps
Ground
B/O Lamps Fuse
B/O Headlamp
Connector Part
Information
Connector Part
Information
Pin
A
•
12010996
•
1-Way M Weather
Pack (BLK)
Wire
Color
Circuit
No.
TAN/WHT
901
Function
B/O Driver Lamps
•
12010105
•
2-Way M Weather
Pack (BLK)
Pin
Wire
Color
Circuit
No.
Function
A
BRN/WHT
900C
B/O Marker Lamps
B
PNK
911A
Power to B/O
Controls
2001/02 LSSV Truck
8-64 Lighting Systems
Body and Accessories
B/O Marker Lamp (Front)
Connector Part
Information
•
12015791
•
1-Way F Weather Pack
(BLK)
Pin
Wire
Color
Circuit
No.
A
BRN/WHT
900
Function
B/O Marker Lamps
Trailer Lamp Connector
Service Lamp Switch
Connector Part
Information
•
08917695
•
6-Way F M/P Series
280 (BLK)
Pin
Wire
Color
Circuit
No.
Function
A
PNK
911C
Power to B/O Control
B
ORN
40A
Junction Block-Body
C
ORN
912B
B/O Control Circuits
D
WHT/BLK
913
Service Stoplamps
E
WHT
17
Stoplamp Switch
Output
F
DK GRN/
WHT
902
B/O Stoplamps
Radio Interrupt
Connector Part
Information
•
08917884
•
12-Way Weather Pack
(BLK)
Pin
Wire
Color
Circuit
No.
A
BRN
900
B/O Marker Lamps
B
YEL
18
Brake/Tail Lamp
Feed
C
BRN
900
B/O Control Circuits
D
BLK
913
Service Stoplamps
E
BRN/WHT
17
Stoplamp Switch
Output
Pin
Wire
Color
Circuit
No.
F
DK PPL
902
B/O Brakelamps
A
GRN
1301
H
BRN
900
B/O Brakelamp
RAP Fuse Supply
Voltage
J
PPL
19
Brake/Tail Lamp
Feed, RR
B
___
___
Not Used
K-N
---
---
Not Used
2001/02 LSSV Truck
Function
Connector Part
Information
•
12129155
•
2-Way M M/P 280
Series
Function
Body and Accessories
Lighting Systems 8-65
B/O Lamps (Right Rear)
Connector Part
Information
•
12010973
•
2-Way M Weather
Pack (BLK)
B/O Lamps (Left Rear)
Connector Part
Information
•
12010973
•
2-Way M Weather
Pack (BLK)
Pin
Wire
Color
Circuit
No.
Function
Pin
Wire
Color
Circuit
No.
Function
A
GRN/
WHT
902C
Service Lamp Switch
A
GRN/
WHT
902B
Service Lamp Switch
B
BRN/
WHT
900C
B/O Lamps Fuse
B
GRN/
BRN/
WHT
900B
B/O Lamps Fuse
License Plate Lamp
Connector Part
Information
Pin
A
•
12010946
•
1-Way M Weather
Pack (BLK)
Wire
Color
Circuit
No.
BRN
9C
Steering Column Connector
Connector Part
Information
•
12047683
•
1-Way M M/P 150
Series (BLK)
Function
Pin
Wire
Color
Circuit
No.
A
PNK/WHT
139B
License Plate Lamp
Function
Ignition 1 Voltage
2001/02 LSSV Truck
8-66 Lighting Systems
Body and Accessories
Diagnostic Information and Procedures
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
•
Blackout (B/O) Headlamp Inoperative
•
Blackout (B/O) Headlamp Always On
•
Headlamps Operate in Blackout (B/O) Mode
•
Backup Lamps Inoperative
•
Stoplamps Inoperative
•
Blackout (B/O) Marker Lamps Inoperative
•
Blackout (B/O) Marker Lamps Always On
•
DRL Operate in Blackout (B/O) Mode
•
Backup Lamps Operate in Blackout (B/O) Mode
•
Park Lamps Operate in Blackout (B/O) Mode
•
CTSY Lamps Operate in Blackout (B/O) Mode
•
Turn Signals Operate in Blackout (B/O) Mode
Blackout (B/O) Headlamp Inoperative
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 20
Go to Step 3
Go to Step 4
Go to Step 7
Go to Step 6
Go to Step 5
Schematic Reference: Lighting Systems Schematics
1
2
Did you review Blackout (B/O) Lighting Description and
Operation?
Inspect condition of fuses. If fuse is open, locate and repair
source of overload and replace fuse.
Did you find and correct the condition?
1. Place blackout service lamp switch in blackout
mode.
2. Turn blackout headlamp switch to ON position.
3
3. Connect a test lamp to CKT 901 (TAN/WHT) at
connector C192 cavity A of the blackout headlamp
and ground.
Does the test lamp illuminate?
1. Disconnect the blackout lamp.
4
2. Connect a self-powered test lamp at CKT 151C
(BLK) and ground.
Does the test lamp illuminate?
5
Locate and repair open CKT 151 (BLK) between blackout
headlamp and G113.
Did you complete the repair?
6
___
Go to Step 20
Replace blackout headlamp.
Did you complete the replacement?
2001/02 LSSV Truck
Go to Step 20
___
Body and Accessories
Lighting Systems 8-67
Blackout (B/O) Headlamp Inoperative (cont’d)
Step
Action
Yes
No
Go to Step 8
Go to Step 9
1. Place blackout switch to on position.
7
2. Connect a test lamp at CKT 901B (TAN/WHT) wire
between blackout control relay cavity 85 connector
C216 and ground.
Does the test lamp illuminate?
8
Locate and repair open in CKT 901B (TAN/WHT) wire
between blackout lamp cavity A and blackout control relay
cavity 85 connector C216.
Did you complete the repair?
9
14
Go to Step 13
Go to Step 15
Go to Step 12
Go to Step 14
Locate and repair open in CKT 911A (PNK) between
blackout service lamp switch and blackout control relay.
Did you complete the repair?
13
Go to Step 11
Connect a test lamp from blackout service drive switch cavity
A CKT 911A (PNK) and ground.
Does the test lamp illuminate?
12
Go to Step 10
Connect test lamp at CKT 915 (WHT) wire cavity 86 and
cavity 87 of the blackout control relay.
Does the test lamp illuminate?
11
Go to Step 20
Connect a test lamp at CKT 911E (PNK) wire between
blackout control relay cavity 87 and ground.
Does the test lamp illuminate?
10
___
___
Go to Step 20
Replace blackout control relay.
Did you complete the replacement?
Go to Step 20
___
Connect a test lamp from the blackout service lamp switch at
cavity B CKT 40A (ORN) and ground.
Does the test lamp illuminate?
Go to Step 19
Go to Step 18
Go to Step 16
Go to Step 17
1. Disconnect blackout headlamp switch.
15
2. Connect a self-powered test lamp between blackout
headlamp switch cavity E CKT 150C (BLK) and
ground.
Does the test lamp illuminate?
16
17
Replace blackout headlamp switch.
Did you complete the replacement?
Locate and repair open in CKT 150C (BLK) wire between
blackout headlamp switch and ground.
Did you complete the repair?
18
20
___
___
Go to Step 20
Replace blackout service drive switch.
Did you complete the replacement?
___
Go to Step 20
Locate and repair open in CKT 40A (ORN) wire between
connector C241and blackout service lamp switch cavity B.
Did you complete the repair?
19
Go to Step 20
Go to Step 20
___
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
2001/02 LSSV Truck
8-68 Lighting Systems
Body and Accessories
Blackout (B/O) Headlamp Always On
Step
Action
Yes
No
Go to Step 2
Go Description and
Operation
Go to Step 3
Go to Step 4
Schematic Reference: Lighting Systems Schematics
1
2
Did you review Blackout (B/O) Lighting Description and
Operation?
Place blackout service lamp switch in all out mode. Connect
a test lamp between blackout service drive switch cavity A
CKT 911C (PNK) to ground.
Does the test lamp illuminate?
3
4
5
Replace blackout service lamp switch.
Did you complete the replacement?
Go to Step 5
Repair short to power or inoperable blackout control relay.
Did you find and correct the condition?
Go to Step 5
___
___
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
Headlamps Operate in Blackout (B/O) Mode
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 4
Go to Step 3
Schematic Reference: Lighting Systems Schematics
1
Did you review Blackout (B/O) Lighting Description and
Operation?
1. Place blackout service lamp switch into the blackout
mode.
2
2. Connect a test lamp from cavity 85 at the blackout
lighting control relay and ground.
Does the test lamp illuminate?
3
4
5
Replace blackout control relay.
Did you complete the replacement?
Go to Step 5
Replace blackout service lamp switch.
Did you complete the replacement?
Go to Step 5
___
___
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
Yes
No
Backup Lamps Inoperative
Step
Action
Schematic Reference: Lighting Systems Schematics
1
Did you review Blackout (B/O) Lighting Description and
Operation?
Go to Step 2
Go to Description
and Operation
2
Is only one backup lamp inoperative?
Go to Step 3
Go to Step 4
3
Test the backup lamp supply voltage circuit of the
inoperative bulb for high resistance, an open, or a short to
ground.
Go to Step 17
Go to Step 5
Did you find and correct the condition?
2001/02 LSSV Truck
Body and Accessories
Lighting Systems 8-69
Backup Lamps Inoperative (cont’d)
Step
Action
Yes
No
Go to Step 17
Go to Step 6
Go to Step 17
Go to Step 13
Go to Step 7
Go to Step 8
Go to Step 8
Go to Step 9
1. Inspect the condition of the backup lamp fuses.
4
2. Is the fuse open, locate and repair the source of the
overload and replace fuse.
Did you find and correct the condition?
5
Test the ground circuit of the inoperative bulb for high
resistance or an open.
Did you find and correct the condition?
6
Connect a test lamp between connector C1 cavity F (Pickup)
of the junction block – rear lamps and ground or C405 cavity
F (Utility) and ground.
Does the test lamp illuminate?
7
Connect a test lamp between connector C3 cavity B3 and
ground.
Does the test lamp illuminate?
8
9
Locate and repair the open or high resistance in circuit 1324.
Did you complete the repair?
11
Did you complete the repair?
14
15
17
___
Go to Step 14
Go to Step 12
Go to Step 15
Go to Step 16
Connect a test lamp between cavity F of the backup lamp
switch and ground.
Replace the bulbs.
Did you complete the repair?
Go to Step 17
Replace the interrupt relay.
Did you complete the repair?
Go to Step 17
Locate and repair the open or high resistance in circuit 24 or
839A.
Did you complete the repair?
16
Go to Step 17
Go to Step 11
Connect a test lamp between cavity B9 of the interrupt relay
and ground.
Does the test lamp illuminate?
13
Go to Step 10
Locate and repair the open in circuit 839A.
Does the test lamp illuminate?
12
___
Connect a test lamp between cavity A7 of the interrupt relay
and ground.
Does the test lamp illuminate?
10
Go to Step 17
___
___
Go to Step 17
Replace the backup lamp switch.
Did you complete the replacement?
___
Go to Step 17
___
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
2001/02 LSSV Truck
8-70 Lighting Systems
Body and Accessories
Stoplamps Inoperative
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Step 4
Schematic Reference: Lighting Systems Schematics
1
2
Did you review Blackout (B/O) Lighting Description and
Operation?
Inspect the fuse(s), check for damaged or corroded inline
connectors, check for broken or partially broken wires inside
insulation and properly installed aftermarket equipment.
Did you find the condition?
3
Make necessary repairs.
Did you complete the repairs?
Go to Step 11
___
1. Disconnect blackout service lamp switch.
4
2. Connect test lamp between CKT 913 (WHT) cavity D
wire and ground.
Does the test light illuminate?
5
6
Locate and repair the open or high resistance in circuit 913.
Did you correct the condition?
8
10
11
Go to Step 7
Replace blackout service lamp switch.
Did you complete the replacement?
___
Go to Step 11
Go to Step 8
___
Connect a test lamp between terminal A of the rear B/O stop
lamp and ground.
Did the test lamp illuminate?
9
Go to Step 11
Go to Step 5
Using a fused jumper, connect cavity D to cavity F of the
blackout service lamp switch connector.
Do the brake lamps illuminate?
7
Go to Step 6
Go to Step 10
Locate and repair the open or high resistance in circuit 902.
Did you correct the condition?
Go to Step 11
Replace the blackout stop lamp(s).
Did you complete the replacement?
Go to Step 11
Go to Step 9
___
___
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
Blackout (B/O) Marker Lamps Inoperative
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Step 4
Schematic Reference: Lighting Systems Schematics
1
2
Did you review Blackout (B/O) Lighting Description and
Operation?
Inspect the fuse(s), check for corroded inline connectors,
check for broken or partially broken wires inside insulation
and for properly installed aftermarket equipment.
Did you find the condition?
3
Make necessary repairs.
Did you complete the repairs?
2001/02 LSSV Truck
Go to Step 14
___
Body and Accessories
Lighting Systems 8-71
Blackout (B/O) Marker Lamps Inoperative (cont’d)
Step
Action
Yes
No
Go to Step 5
Go to Step 10
Go to Step 7
Go to Step 6
1. Place blackout drive lamp in blackout mode.
4
2. Connect a test lamp at cavity A CKT 911 (PNK) wire
at blackout service drive switch and ground.
Does the test lamp illuminate?
5
Connect a test lamp between inline fuse B cavity B CKT 911
(PNK) wire and ground.
Does the test lamp illuminate?
6
Locate and repair open in CKT 911 (PNK) wire between
inline fuse B and blackout service drive switch.
Did you complete the repair?
7
9
Did you complete the replacement?
12
___
___
Go to Step 14
Go to Step 11
Replace blackout service drive switch.
Did you complete the replacement?
Go to Step 14
Connect a test lamp at MBEC junction block-body connector
C241 cavity D CKT 40 (ORN) wire and ground.
Go to Step 13
Locate and repair open in CKT 40 (ORN) wire between
junction block-body connector C4 cavity D and blackout
service drive switch.
Did you complete the repair?
14
Go to Step 9
Connect a test lamp between blackout service drive switch to
CKT 40 (ORN) cavity B and ground.
Does the test lamp illuminate?
13
Go to Step 14
Locate and repair open in CKT 900 (BRN/WHT) front and
CKT 900 (BRN/WHT) rear wire between inline fuse B and
blackout marker lamp assembly.
Does the test lamp illuminate?
11
Go to Step 8
Replace blackout marker lamp(s) assembly.
Did you complete the repair?
10
Go to Step 14
Disconnect blackout marker lamp(s) and connect test lamp
between cavity A CKT 900 (BRN/WHT) front and CKT 900
(BRN/WHT) rear to ground.
Does the test lamp illuminate?
8
___
Go to Step 12
___
Refer to 2001/02
C/K Truck Service
Manual
___
Go to Step 15
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
Blackout (B/O) Marker Lamps Always On
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Schematic Reference: Lighting Systems Schematics
1
Did you review Blackout (B/O) Lighting Description and
Operation?
2001/02 LSSV Truck
8-72 Lighting Systems
Body and Accessories
Blackout (B/O) Marker Lamps Always On (cont’d)
Step
Action
2
Inspect fuse(s), check for damaged or corroded inline
connectors, check for broken or partially broken wires inside
insulation and properly installed aftermarket equipment.
Did you find and correct the condition?
3
Yes
No
Go to Step 3
Go to Step 4
Make necessary repairs.
Did you complete the repair?
Go to Step 7
___
1. Disconnect blackout service lamp switch.
4
2. Connect a test lamp between CKT 911 (PNK) cavity
A wire and ground.
Does the test lamp illuminate?
5
Repair short to power in CKT 911 (PNK) or CKT 900
(BRN/WHT) wire(s) between blackout service lamp switch
and blackout marker lamps.
Did you complete the repair?
6
7
Got o Step 5
___
Got o Step 7
Replace blackout service lamp switch.
Did you complete the replacement?
Go to Step 6
Got o Step 7
___
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
DRL Operate in Blackout (B/O) Mode
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Step 4
Schematic Reference: Lighting Systems Schematics
1
Did you review Blackout (B/O) Lighting Description and
Operation?
1. Place the blackout service lamp switch in the
blackout mode.
2
2. Connect a test lamp at cavity C of the blackout
switch and ground.
Does the test light illuminate?
3
4
Replace the blackout service lamp switch.
Did you complete the replacement?
6
7
___
Connect a test lamp to cavity C6 of the relay block and
ground.
Does the test lamp illuminate?
5
Go to Step 9
Go to Step 5
Locate and repair the short to voltage on circuit 912B (RED).
Did you complete the repair?
Go to Step 9
Go to Step 6
___
Remove DRL interrupt relay from the relay module.
Are the DRL’s illuminated?
Go to Step 8
Replace the DRL relay.
Did you complete the replacement?
2001/02 LSSV Truck
Go to Step 9
Go to Step 7
___
Body and Accessories
Lighting Systems 8-73
DRL Operate in Blackout (B/O) Mode (cont’d)
Step
8
Action
Locate and repair the short to voltage on circuit 545A (DK
BLU).
Did you complete the repair?
9
Yes
No
___
Go to Step 9
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
Backup Lamps Operate in Blackout (B/O) Mode
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Step 4
Schematic Reference: Lighting Systems Schematics
1
Did you review Blackout (B/O) Lighting Description and
Operation?
1. Place the blackout service lamp switch in the
blackout mode.
2
2. Connect a test lamp at cavity C of the blackout
switch and ground.
Does the test light illuminate?
3
4
Replace the blackout service lamp switch.
Did you complete the replacement?
6
8
9
Go to Step 5
Locate and repair the short to voltage on circuit 912B (RED).
Did you complete the repair?
Go to Step 9
Go to Step 6
___
Remove the backup lamp interrupt relay from the relay
module.
Are the backup lamps illuminated?
7
___
Connect a test lamp to cavity A9 of the relay block and
ground.
Does the test lamp illuminate?
5
Go to Step 9
Go to Step 8
Replace the backup interrupt relay.
Did you complete the replacement?
Go to Step 9
Locate and repair the short to voltage on circuit 839A (PNK).
Did you complete the repair?
Go to Step 9
Go to Step 7
___
___
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
Park Lamps Operate in Blackout (B/O) Mode
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Schematic Reference: Lighting Systems Schematics
1
Did you review Blackout (B/O) Lighting Description and
Operation?
2001/02 LSSV Truck
8-74 Lighting Systems
Body and Accessories
Park Lamps Operate in Blackout (B/O) Mode (cont’d)
Step
Action
Yes
No
Go to Step 3
Go to Step 4
1. Place the blackout service lamp switch in the
blackout mode.
2
2. Connect a test lamp at cavity C of the blackout
switch and ground.
Does the test light illuminate?
3
4
Replace the blackout service lamp switch.
Did you complete the replacement?
7
8
Go to Step 6
___
Go to Step 9
Remove the park lamp interrupt relay from the relay module.
Are the park lamps illuminated?
Go to Step 8
Replace the park lamp interrupt relay.
Did you complete the replacement?
Go to Step 9
Locate and repair the short to voltage on circuit 240A
(ORN/BLK).
Did you complete the repair?
9
Go to Step 5
Locate and repair the short to voltage on circuit 240A
(ORN/BLK).
Did you complete the repair?
6
___
Connect a test lamp to cavity C4 of the relay block and
ground.
Does the test lamp illuminate?
5
Go to Step 9
Go to Step 7
___
___
Go to Step 9
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
CTSY Lamps Operate in Blackout (B/O) Mode
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Step 4
Schematic Reference: Lighting Systems Schematics
1
Did you review Blackout (B/O) Lighting Description and
Operation?
1. Place the blackout service lamp switch in the
blackout mode.
2
2. Connect a test lamp at cavity C of the blackout
switch and ground.
Does the test light illuminate?
3
4
Replace the blackout service lamp switch.
Did you complete the replacement?
___
Connect a test lamp to cavity A3 of the relay block and
ground.
Does the test lamp illuminate?
5
Go to Step 9
Go to Step 5
Locate and repair the short to voltage on circuit 912B (RED).
Did you complete the repair?
2001/02 LSSV Truck
Go to Step 9
Go to Step 6
___
Body and Accessories
Lighting Systems 8-75
CTSY Lamps Operate in Blackout (B/O) Mode (cont’d)
Step
6
7
8
9
Action
Yes
No
Go to Step 8
Go to Step 7
Remove the CTSY interrupt relay from the relay module.
Are the CTSY lamps illuminated?
Replace the CTSY interrupt relay.
Did you complete the replacement?
Go to Step 9
Locate and repair the short to voltage on circuit 40B (ORN).
Did you complete the repair?
Go to Step 9
___
___
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
Turn Signals Operate in Blackout (B/O) Mode
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Step 4
Schematic Reference: Lighting Systems Schematics
1
Did you review Blackout (B/O) Lighting Description and
Operation?
1. Place the blackout service lamp switch in the
blackout mode.
2
2. Connect a test lamp at cavity C of the blackout
switch and ground.
Does the test light illuminate?
3
4
Replace the blackout service lamp switch.
Did you complete the replacement?
6
7
8
Go to Step 5
Locate and repair the short to voltage on circuit 912B (RED).
Did you complete the repair?
Go to Step 9
Go to Step 6
___
Remove the turn signal interrupt relay.
Do the turn signals operate?
Go to Step 8
Replace the turn signal interrupt relay.
Did you complete the replacement?
Go to Step 9
Locate and repair the short to voltage on circuit 139B
(PNK/BLK).
Did you complete the repair?
9
___
Connect a test lamp to cavity 85 circuit 912B of the turn
signal relay and ground.
Does the test lamp illuminate?
5
Go to Step 9
Go to Step 7
___
___
Go to Step 9
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
2001/02 LSSV Truck
8-76 Lighting Systems
Body and Accessories
Repair Instructions
Headlamp Replacement – Blackout (B/O)
Removal Procedure
1. Remove the radiator grille brush guard. Refer to Radiator
Grille Brush Guard Replacement in Bumpers.
2. Remove upper grille baffle.
3. Remove radiator grille.
4. Remove the nut (2) and washer, from the lamp stud at the
base of the mounting bracket.
5. Remove the ground lead by sliding it off the stud.
6. Remove the auxiliary wiring harness lead by releasing the
connector tab (1).
7. Remove the blackout lamp assembly from the mounting
bracket
Installation Procedure
1. Install the blackout lamp assembly to the mounting
bracket.
2. Install the auxiliary wiring harness connector (1).
3. Install the ground lead by sliding on the stud.
Notice: Refer to Fastener Notice in Cautions and Notices.
4. Install the washer and nut (2) to the lamp stud.
Tighten
Tighten the nut to 10 N•m (7 lb ft).
5. Install the radiator grille.
6. Install upper grille baffle.
7. Install the radiator brush guard. Refer to Radiator Brush
Guard Replacement in Bumpers.
Headlamp Bulb Replacement – Blackout
(B/O)
Removal Procedure
1. Remove the screws (1) holding the lens cap to the
assembly.
2. Remove the lens cap and O-ring.
3. Remove the bulb.
Important: Use a standard 1973 bulb for replacement.
2001/02 LSSV Truck
Body and Accessories
Lighting Systems 8-77
Installation Procedure
1. Install the new bulb in the assembly.
Notice: The O-ring installation must be a proper fit.
2. Install the O-ring with the lens cover.
3. Install the three screws (1) to the assembly.
Marker Lamp Replacement – Front
Blackout (B/O)
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove bolt (1) on brush guard and slide out the blackout
marker light assembly from grille.
3. Remove the harness connector (2) by releasing the
connector tab.
4. Remove the nut holding the ground lead and stud to the
marker mounting bracket.
5. Remove the nut holding the lamp stud to the marker
mounting bracket.
6. Remove the blackout marker lamp assembly (1).
2001/02 LSSV Truck
8-78 Lighting Systems
Body and Accessories
Installation Procedure
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install mounting bracket to blackout marker and lamp
assemble (1).
Tighten
Tighten marker lamp nuts to 2 N•m (1.5 lb ft)
2. Install ground lead to blackout marker lamp stud.
Tighten
Tighten ground lead nut to 2 N•m (1.5 lb ft)
3. Install harness connector (2) to marker lamp connector.
4. Install marker lamp assembly into opening in grille and
install bolt (1) to brush guard.
5. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft)
Marker Lamp Replacement – Rear
Blackout (B/O)
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the nut (1) from the bracket and remove marker
lamp assembly.
2001/02 LSSV Truck
Body and Accessories
Lighting Systems 8-79
3. Remove the harness connector (2) by releasing the
connector tab.
4. Remove the nut holding the ground lead (1) and the nut to
the stud.
5. Remove the opposite nut holding the to the other stud.
6. Remove the blackout marker lamp assembly (3) from the
bracket.
Installation Procedure
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install the marker lamp (3) to the bracket with nuts and
tighten.
Tighten
Tighten the nuts to 2 N•m (1.5 lb ft).
2. Install the ground lead to the stud with a nut and tighten.
Tighten
Tighten the nut to 2 N•m (1.5 lb ft).
3. Install the harness connector (2) to the lamp connector.
4. Install marker lamp assembly into opening in bumper and
tighten nut (1).
5. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft)
2001/02 LSSV Truck
8-80 Lighting Systems
Body and Accessories
IP Compartment Lamp Replacement –
Voltmeter
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the nuts (1) and washers holding the rear bracket
(2) to the voltmeter (4).
3. Remove the voltmeter lamp bulb from the gage.
Installation Procedure
Important: Use a standard 194 bulb for replacement.
1. Install the voltmeter lamp bulb to the gage.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install the voltmeter rear bracket (2) with the two nuts (1)
and washers.
Tighten
Tighten the two nuts to 2.8 N•m (2 lb ft).
3. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft)
2001/02 LSSV Truck
Body and Accessories
Lighting Systems 8-81
Description and Operation
Blackout (B/O) Lighting Description
Blackout (B/O) Lighting Circuit of
Operation
This section focuses on the function and service of the
blackout headlamp, the front and rear blackout marker
lamps, the service/blackout lamp switch and the
voltmeter lamp. All other lamps are covered in the
2001/02 C/K Truck Service Manual. As military options
the blackout lamps provide a stealthy, low illumination
alternative to standard lighting systems, also available
on these vehicles. The blackout headlamp is identical
on these vehicles. The front blackout marker lamps are
mounted in the grille of both vehicles. The rear
blackout marker lamps are arranged in the same
relative positions on each of the rear bumpers.
Voltage for the blackout marker lamps is supplied
through the Maxi Fuse 8® located in the under-hood
relay center to the battery junction block. From there
the ORN (40) wire and inline fuse A supply voltage to
the blackout service drive switch. When the blackout
service switch is placed in blackout mode, voltage is
applied to PNK (911) wire to inline fuse B. Voltage is
then applied to the BRN (900) wire for front blackout
marker lamps and BRN/WHT (900) wire for rear
blackout marker lamps. Ground for the front blackout
marker lamps is supplied through G113 for the front
and G401 for the rear.
The blackout stoplamps voltage is supplied through
fuse A GRN (40) wire to the TCC/stoplamp switch at all
times. When the brake pedal is depressed the
stoplamp switch is closed and powers the WHT (17)
wire to the blackout service drive switch. When in
blackout mode, voltage is applied from the
DKGRN/WHT (902) wire to the blackout stoplamps.
The blackout stoplamps receive constant ground
through G401.
Backup Lights
Backup Lamps Circuit of Operation
When the ignition switch is in run, voltage is applied
through the turn/bu fuse to the taillamp relay. When the
blackout service drive switch is placed in service
position, voltage is applied to the taillamp relay control
circuit through the ORN (912) wire. The relay contacts
are normally closed allowing voltage to the backup
lamp switch through the PNK (139) wire.
With the transmission in “reverse,” voltage is applied to
the LH and RH backup lamps, which are permanently
grounded. When voltage is applied to LTGRN (24)
wire, the backup lamps are on. When the blackout
service drive switch is placed in blackout position, the
taillamp relay is deactivated and the backup lamps are
inoperative. The LTGRN (24) wire also supplies input
to the electrochromatic rearview mirror dimming
function. Connection is also provided for the trailer-tow
capability.
The voltmeter lamp provides illumination to the
voltmeter mounted in the dash.
The service/blackout lamp switches, mounted at the
lower center dash, control blackout lamp and standard
lamp functions. A pair of toggles operates these
switches. The blackout drive toggle is mounted on the
right. When the service light toggle is moved up to the
ON position it activates all service lights and enables all
normal service light functions elsewhere to be turned
ON if needed. When moved to the All OFF position this
toggle shuts off all lamps & auxiliary lamps. When the
switch is moved to Blackout ON only the blackout
lighting will work, which includes the blackout markers,
front and rear, and the blackout headlamp. Within the
rear marker lamps are separate color markers. Yellow
will illuminate for the brakes and red will illuminate for
drive mode. The front markers illuminate in yellow.
(The horn is inoperative while the blackout toggle is in
the ON position.) All warning lamps in the IP remain
functional regardless of the toggle position. If the
vehicle is parked for over 24 hours place the service
switch in All OFF.
To operate the blackout drive light switch pull it out and
left to the ON position; this will activate the front
blackout headlamp. This will occur provided the
service light/blackout switch remains in the ON or down
position. Pulling the left blackout drive light switch out
and right to the OFF position will turn it OFF. Releasing
the switch from ON or OFF will cause it to return to the
center position automatically.
The following are function tables for the service
light/blackout control switch and determines under what
conditions various exterior and interior lighting functions
activate. Additional details are found in the Owner’s
Manual.
2001/02 LSSV Truck
8-82 Lighting Systems
Body and Accessories
Exterior Lights
Exterior Lamp or Device
Service Switch
Blackout Drive Light Switch
Headlamps and Taillamps
ON
OFF
Daytime Running Lamps
ON
OFF
Fog Lamps (If Equipped)
ON
OFF
Parking Lamps
ON
OFF
Front/Rear Sidemarker Lamps
ON
OFF
Marker Lamps: Roof, Fender and
Tailgate (If Equipped)
ON
OFF
Brakelamps
ON
OFF
Back-up Lamps
ON
OFF
License Plate Lamp (If Equipped)
ON
OFF
Front/Rear Turn Signals
ON
OFF
Hazard Warning Lamps
ON
OFF
Cargo Lamp (If Equipped)
ON
OFF
Horn
ON
OFF
Front/Rear Blackout Marker Lamps
B/O
ON/OFF
Blackout Stoplamps
B/O
ON/OFF
Blackout Drive Lamp (Headlamp)
B/O
ON
General Description
Interior Lights
Interior Lamp or Device
Service Switch
Blackout Drive Light Switch
Instrument Panel/Switch Illumination
ON
OFF
Radio/Clock ILLUMINATION
(If Equipped)*
ON
OFF
Headlamp High-Beam Indicator
ON
OFF
Turn Signal/Hazard Warning Indicators
ON
OFF
Four-Wheel-Drive Indicator
ON
OFF
Dome/Courtesy Lamps
ON
OFF
Ashtray Lamp
ON
OFF
Glove Compartment Lamp
ON
OFF
Underhood Lamp
ON
OFF
ALL POSITIONS
OFF
ON
ON/OFF
Warning Chime: Headlamps On, Safety
Belt and Key in Ignition
Instrument Cluster Warning Lights*
* Clock numerals and DRL indicator will remain illuminated.
2001/02 LSSV Truck
Body and Accessories
Lighting Systems 8-83
Interior Lights
Mechanical Device
Service Switch
Blackout Drive Light Switch
Brake-Transmission Shift. Interlock
(BTSI)
ON
ON/OFF
Torque Converter Lockup Clutch
ON
ON/OFF
2001/02 LSSV Truck
8-84 Instrument Panel, Gages and Console
Body and Accessories
Instrument Panel, Gages and Console
Specifications
Fastener Tightening Specifications
Specification
Application
Metric
English
Battery Cable Connections
17 N•m
13 lb ft
Blackout Switch Nuts
2.8 N•m
2 lb ft
Voltmeter Bolts
2.8 N•m
2 lb ft
2001/02 LSSV Truck
Body and Accessories
Instrument Panel, Gages and Console 8-85
Repair Instructions
Voltmeter Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the connector (3) and the bulb harness from the
back of the voltmeter and mounting bracket.
3. Remove the two nuts (1) from the back of gage.
4. Remove bracket (2).
5. Remove voltmeter (4) from opening.
Installation Procedure
1. Install the voltmeter (4) in the bracket opening.
2. Install bracket (2) on back of voltmeter.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install nuts (1) and tighten.
Tighten
Tighten nuts to 2.8 N•m (2 lb ft).
4. Connect connectors (3) and the bulb harness to the gage.
5. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten the battery cable connection to 17 N•m (13 lb ft).
Voltmeter, Blackout (B/O) Switch Panel
Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the voltmeter. Refer to Voltmeter Replacement.
3. Remove the blackout switch. Refer to Blackout (B/O)
Switch Replacement.
4. Remove the screws (1) holding the panel to the IP.
Left side shown, right side similar.
2001/02 LSSV Truck
8-86 Instrument Panel, Gages and Console
Body and Accessories
Installation Procedure
1. Install the panel on the IP. Hand-tighten the screws (1).
Left side shown, right side similar.
2. Install the blackout switch to the panel. Refer to Blackout
(B/O) Switch Replacement.
3. Install the voltmeter to the panel. Refer to Voltmeter
Replacement.
Notice: Refer to Fastener Notice in Cautions and Notices.
4. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten the battery cable connection to 17 N•m (13 lb ft).
Blackout (B/O) Switch Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Unplug the connectors (1) from the switches.
3. Remove the nuts and washers holding the blackout switch
toggles/knobs.
4. Remove the keyed washers from behind the IP mounting
panel and pull the toggles/knobs out.
2001/02 LSSV Truck
Body and Accessories
Instrument Panel, Gages and Console 8-87
Installation Procedure
1. Install the keyed washers behind the IP mounting panel.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Insert the toggles/knobs through the IP mounting panel
holes and attach with the washers and nuts (1).
Tighten
Tighten the two nuts to 2.8 N•m (2 lb ft).
3. Plug the connector (1) to the switches.
4. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft)
2001/02 LSSV Truck
8-88 Instrument Panel, Gages and Console
Description and Operation
Instrument Panel and Gages
Description
The instrument panel has been modified by removal of
the lower panel beneath the ashtray. A bracket
mounted in this space houses the blackout lighting
switches and 24V meter. The instrument panel houses
auxiliary harnesses as well as standard indicators.
Some modification has been made to the instrument
panel to accommodate auxiliary harness connections
and convenience/fuse centers.
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Horns 8-89
Horns
Schematic and Routing Diagrams
2001/02 LSSV Truck
8-90 Horns
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Horns 8-91
Diagnostic Information and Procedures
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
•
Horns Inoperative
•
Horns Operate in Blackout (B/O) Mode
Horns Inoperative
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Step 4
Schematic Reference: Horns Schematic
1
2
Did you review Horns Description and Operation?
Inspect inline fuse A and B, check for damaged or corroded
inline connectors, check for broken or partially broken wires
inside insulation and properly installed aftermarket
equipment.
Did you find and correct the condition?
3
4
5
Locate and repair as needed and repair circuit.
Did you complete the repair?
Does the LH horn operate?
9
Did you complete the replacement?
___
Go to Step 25
Go to Step 8
Go to Step 25
Locate and repair open in DK GRN 29 wire between the RH
horn and S124.
Go to Step 9
___
___
Go to Step 25
Disconnect the LH horn connector. Connect a test lamp
from the LH horn connector cavity B to ground press horn.
Go to Step 11
Go to Step 14
Go to Step 12
Go to Step 13
Connect a test lamp from the LH horn connector cavity A to
B+.
Does the test lamp illuminate?
12
Go to Step 6
Replace the RH horn.
Does the test lamp illuminate?
11
Go to Step 7
Backprobe the RH horn connector with a test lamp from
cavity B to ground. Depress and hold the horn switch.
Did you complete the repair?
10
Go to Step 10
Locate and repair open in BLK 250 wire between the RH
horn and G112
Does the test lamp illuminate?
8
Go to Step 5
Backprobe the RH horn connector with a test lamp from
cavity A to B+.
Did you complete the repair?
7
___
Depress and hold the horn switch.
Does the test lamp illuminate?
6
Go to Step 25
Replace the LH horn.
Did you complete the replacement?
Go to Step 25
___
2001/02 LSSV Truck
8-92 Horns
Body and Accessories
Horns Inoperative (cont’d)
Step
13
Action
Locate and repair open in BLK 250 wire between the LH
horn and G112.
Did you complete the repair?
14
19
21
22
Does the test lamp illuminate?
24
Go to Step 17
___
Go to Step 25
Go to Step 20
Go to Step 19
___
Go to Step 25
Connect a test lamp from the horn relay cavity C1 to B+.
Does the test lamp illuminate?
Go to Step 21
Replace the horn relay.
Did you complete the replacement?
Go to Step 25
Go to Step 22
___
Disconnect the horn switch connector in the steering wheel,
connect a test lamp from the horn switch terminal (feed side)
to B+. Press the horn button.
Go to Step 24
Replace the horn switch. Does the test lamp light?
Did you complete the replacement?
Go to Step 25
Locate and repair open in BLK 28 wire between the horn
switch and the horn relay or in the horn brush/horn slip ring.
Did you complete the repair?
25
Go to Step 18
Locate and repair open in ORN 140 and 912 wire between
the stop/hazard fuse cavity D3 of the horn relay.
Does the test lamp illuminate?
23
Go to Step 25
Connect a test lamp from the horn relay cavity D3 to ground.
Did you complete the repair?
20
Go to Step 15
___
Locate and repair open in DK GRN 29 wire between the horn
relay and the LH horn.
Did you complete the repair?
18
Go to Step 16
Momentarily connect a fused jumper from the horn relay
cavity C3 to cavity D1.
Do the horns operate?
17
___
Go to Step 25
Locate and repair open ORN 740 wire from horn Mini Fuse
to the horn relay.
Did you complete the repair?
16
No
Reconnect the LH horn connector. Remove the horn relay
from the horn relay socket. Connect a test lamp from the
horn relay cavity C3 to ground.
Does the test lamp illuminate?
15
Yes
Go to Step 23
___
___
Go to Step 25
Verify the system operation.
Do the horns operate properly?
2001/02 LSSV Truck
System OK
Go to Step 2
Body and Accessories
Horns 8-93
Horns Operate in Blackout (B/O) Mode
Step
Action
Yes
No
Go to Step 2
Go to Description
and Operation
Go to Step 3
Go to Step 4
Schematic Reference: Horns Schematic
1
Did you review Horns Description and Operation?
1. Disconnect blackout service drive switch.
2
2. Connect a test lamp from cavity C to ground.
Does the test lamp illuminate?
3
4
5
Replace blackout control relay.
Did you complete the replacement?
Go to Step 5
Replace blackout service drive switch.
Did you complete the replacement?
Go to Step 5
___
___
Verify the system operation.
Do the horns operate properly?
System OK
Go to Step 2
2001/02 LSSV Truck
8-94 Horns
Description and Operation
Horn with Blackout (B/O) Control
Circuit Operation
Voltage is applied at all times to the horn relay through
the inline A fuse and the horn Mini Fuse®. The
blackout service drive switch is used to control the horn
relay. Power is applied through ORN (CKT 40) to the
blackout service drive switch which is a normally closed
switch. When the horn switch is depressed, the horn
switch contacts close, providing a ground to the coil of
the horn relay. When the coil of the relay is grounded,
the relay energizes and the contacts close, applying
battery voltage directly to the LH and RH horn.
Because the horns are grounded at Ground (G112) the
horns will sound as long as the horn switch is
depressed.
The blackout service drive switch is used to disable the
horn relay when placed in the blackout mode. When
the blackout service drive switch is in the ON position,
power to the horn relay is disrupted leaving the horns
inoperative.
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Exterior Trim 8-95
Exterior Trim
Specifications
Fastener Tightening Specifications
Specification
Application
Radiator Grille Bolts
Metric
English
9 N•m
75 lb in
2001/02 LSSV Truck
8-96 Exterior Trim
Body and Accessories
Repair Instructions
Radiator Grille Replacement
Removal Procedure
1. Remove the radiator grille brush guard. Refer to Radiator
Grille Brush Guard Replacement in the Bumper section.
2. Remove the upper grille baffle.
3. Remove the fasteners holding the radiator grille to the
radiator support.
4. Remove the radiator grille.
Installation Procedure
1. Modify the new radiator grille using a hole saw. Cut a
82.55 mm (3.25 in) diameter hole (3) in the designated
area left of the right headlamp, for the battery
booster/slave connector. Cut another 152.4 mm (6.00 in)
diameter hole (1) in the designated area of the left
headlamp for the blackout headlamp. Cut opening (2) in
the designated area between headlamp and turn signal
for the marker lamps.
2001/02 LSSV Truck
Body and Accessories
Exterior Trim 8-97
2. Paint the new radiator grille. Refer to Paint Codes in
Paint/Coatings section.
3. Install the radiator grille and bolts.
Notice: Refer to Fastener Notice in Cautions and Notices.
4. Install the upper grille baffle.
Tighten
Tighten bolts to 9 N•m (75 lb in).
5. Install the radiator grille brush guard. Refer to Radiator
Grille Brush Guard Replacement in the Bumper section.
2001/02 LSSV Truck
8-98 Exterior Trim
Description and Operation
Exterior Trim Description
The exterior grille has been modified to accept the
blackout headlamp, marker lamps and the slave start
receptacle. The front emblem has been removed and
the grille is painted.
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Bumpers 8-99
Bumpers
Specifications
Fastener Tightening Specifications
Specification
Application
Metric
English
17 N•m
13 lb ft
80-95 N•m
59-70 lb ft
Front Bumper Bracket Bolts (Pickup Models)
85 N•m
63 lb ft
Front Bumper Frame Brace Bolts (Pickup Models)
85 N•m
63 lb ft
Front Bumper Bracket Bolts (Tahoe/Suburban)
85 N•m
63 lb ft
Front Bumper Frame Brace Bolts (Tahoe/Suburban)
55 N•m
41 lb ft
Front Clevis Bolts
200 N•m
148 lb ft
80-95 N•m
59-70 lb ft
88 N•m
65 lb ft
Rear Bumper Brace Bolts
80-100 N•m
59-74 lb ft
Rear Bumper Nuts (Factory Hitch)
80-100 N•m
59-74 lb ft
Rear Bumper Frame Bolts
80-100 N•m
59-74 lb ft
Rear Clevis Bolts
200 N•m
148 lb ft
Rear Clevis/Tie Down Support Bolt (Factory Hitch)
78 N•m
58 lb ft
Rear Clevis/Tie Down Support Bolts
67-88 N•m
49-65 lb ft
Rear Clevis/Tie Down Support Vertical Bolt
88-115 N•m
65-85 lb ft
Battery Cable Connections
Front Clevis/Tie-Down Support Bolts (Pickup Models)
Front Clevis/Tie-Down Support Bolts (Tahoe/Suburban)
Radiator Grille Brush Guard Bolts
2001/02 LSSV Truck
8-100 Bumpers
Body and Accessories
Repair Instructions
Front Bumper Replacement
(Tahoe/Suburban)
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative battery cable of the right battery and
the 12V and 24V cables of the left battery.
2. Remove radiator grille brush guard. Refer to Radiator
Grille Brush Guard Replacement.
3. Remove the front grille. Refer to Radiator Grille
Replacement in Exterior Trim.
4. Remove front clevis. Refer to Clevis/Tie-Down
Replacement – Front.
5. Remove the winch connector from the bracket (if
equipped).
6. Remove the retaining bolts (1,2) from the front bumper.
7. Remove the brace bolt (3) from the front bumper.
8. Remove the front bumper assembly from the vehicle
sliding it over the winch receiver (if equipped).
Installation Procedure
1. Position the front bumper assembly on the vehicle.
Notice: Refer to Fastener Notice in Cautions and Notices.
Important: Tighten the bolts in the following sequence.
2. Install the retaining bolts (1,2) to the front bumper.
Tighten
Tighten the bracket bolt (1) to 85 N•m (63 lb ft).
Tighten the bracket bolt (2) to 85 N•m (63 lb ft).
Tighten the brace bolt (3) to 55 N•m (41 lb ft).
2001/02 LSSV Truck
Body and Accessories
Bumpers 8-101
3. Install the winch connector to mounting bracket (if
equipped).
4. Install front clevis. Refer to Clevis/Tie-Down Replacement
– Front.
5. Install the front radiator grille. Refer to Radiator Grille
Replacement in Exterior Trim.
6. Install the radiator grille brush guard. Refer to Radiator
Grille Brush Guard Replacement.
Notice: Refer to Fastener Notice in Cautions and Notices.
7. Install the negative battery cable of the right battery and
the 12V and the 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
Front Bumper Replacement (Pickup
Models)
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative battery cable of the right battery and
the 12V and 24V cables of the left battery.
2. Remove radiator grille brush guard. Refer to Radiator
Grille Brush Guard Replacement.
3. Remove the front grille. Refer to Radiator Grille
Replacement in Exterior Trim.
4. Remove the winch mount (if equipped). Refer to Winch
Mount Replacement (Pickup Models) in Body Front End.
2001/02 LSSV Truck
8-102 Bumpers
Body and Accessories
5. Remove the retaining bolts (1,2) from the front bumper.
6. Remove the brace bolt (3) from the front bumper.
7. Remove the front bumper assembly from the vehicle.
Installation Procedure
1. Position the front bumper assembly on the vehicle.
Notice: Refer to Fastener Notice in Cautions and Notices.
Important: Tighten the bolts in the following sequence.
2. Install the retaining bolts (1,2) to the front bumper.
Tighten
Tighten the bracket bolt (1) to 85 N•m (63 lb ft).
Tighten the bracket bolt (2) to 85 N•m (63 lb ft).
Tighten the brace bolt (3) to 55 N•m (41 lb ft).
3. Install winch mount (if equipped). Refer to Winch Mount
Replacement (Pickup Models) in Body Front End.
4. Install the front radiator grille.
5. Install the radiator grille brush guard. Refer to Radiator
Grille Brush Guard Replacement .
6. Install the negative battery cable of the right battery and
the 12V and the 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
2001/02 LSSV Truck
Body and Accessories
Bumpers 8-103
Radiator Grille Brush Guard Replacement
Removal Procedure
1. Remove the two bolts (1), washers and nuts holding the
brush guard to upper supports.
2. Remove three lower fasteners (2) from the bumper.
3. Remove the radiator grille brush guard assembly (3).
Installation Procedure
1. Install the radiator brush guard assembly (3).
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install the brush guard to the front bumper with the three
fasteners (2), washers and nuts.
Tighten
Tighten the three nuts to 88 N•m (65 lb ft).
3. Install the two bolts (1) washers and nut to the upper
supports and tighten.
Tighten
Tighten the bolts to 88 N•m (65 lb ft).
Clevis/Tie-Down Replacement – Front
Removal Procedure
1. Remove nut (1) and bolt (3).
2. Remove clevis (2) from mount.
2001/02 LSSV Truck
8-104 Bumpers
Body and Accessories
Installation Procedure
1. Install clevis (2) to the mount.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install bolt (3) and nut (1) and tighten.
Notice: Clevis must move once torqued. Do not over torque.
Tighten
Tighten nut and bolt to 200 N•m (148 lb ft).
Clevis/Tie-Down Support Replacement –
Front (Pickup Models)
Removal Procedure
1. Remove the engine shield.
2. Remove the front clevis/tie-down. Refer to Clevis/TieDown Replacement – Front.
3. Remove the front bumper. Refer to Front Bumper
Replacement (Pickup Models).
4. Remove the bottom mounting bolts (3), washers and nuts
holding the front clevis tie-down support to the frame rail.
5. Remove the side mounting bolts (4), washers and nuts (1)
holding the front clevis tie-down support to the frame rail.
6. Remove the front clevis tie-down support (2).
Installation Procedure
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install the front clevis tie-down support (2) with the side
mounting bolts (4), washers and nuts (1).
Tighten
Tighten the side mounting bolts to 80-95 N•m (59-70 lb ft).
2. Install the bottom of the tie-down support with the two
bottom mounting bolts (3).
Tighten
Tighten the two bottom mounting nuts to 80-95 N•m (5970 lb ft).
3. Install the front bumper. Refer to Front Bumper
Replacement (Pickup Models).
2001/02 LSSV Truck
Body and Accessories
Bumpers 8-105
4. Install the front tie-down clevis (2). Refer to Clevis/TieDown Replacement – Front.
5. Install the engine shield.
Clevis/Tie Down Support Replacement –
Front (Utility)
Removal Procedure
1. Remove engine shield.
2. Remove the front clevis tie-downs. Refer to Clevis/TieDown Replacement – Front.
3. Remove the Front Bumper. Refer to Front Bumper
Replacement (Tahoe/Suburban).
4. Remove bracket (3) by remove bolts (2).
5. Remove the side mounting bolt (1), washer and nut (5).
6. Remove the front clevis/tie-down support (4).
Installation Procedure
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install the front clevis/tie-down support (4) with side
mounting bolt (1), washer and nut (5).
Tighten
Tighten side mounting bolts to 80-95 N•m (59-70 lb ft).
2. Install the bracket (3) with bolts (2) and tighten.
Tighten
Tighten bracket bolts to 80-95 N•m (59-70 lb ft).
3. Install the front bumper. Refer to Front Bumper
Replacement (Utility).
2001/02 LSSV Truck
8-106 Bumpers
Body and Accessories
4. Install the front clevis/tie-downs (2). Refer to Clevis/TieDown Replacement – Front.
5. Install engine shield.
Bumper Replacement – Rear (Factory
Hitch)
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Disconnect the negative battery cable of the right battery
and the 12V and 24V cables of the left battery.
2. Disconnect the blackout marker lamps by depressing the
tab releases (2), and remove the ground (1) from the
mounting stud.
3. Disconnect the trailer lamp, connectors by depressing the
tab releases.
4. Remove the pintle tow hook. Refer to Pintle Hook
Replacement.
5. Remove upper and lower step pads.
6. Remove bolts (1) attaching bumper to receiver.
2001/02 LSSV Truck
Body and Accessories
Bumpers 8-107
7. Remove the bolts, washers and nuts holding the rear
bumper to the bumper braces.
8. Remove the bolts, washers and nuts holding the rear
bumper to the frame (2).
9. Remove the rear bumper (1).
Installation Procedure
1. Install the rear bumper (1) loosely to the frame brackets
with the bolts, washers and nuts (2).
2. Install the rear bumper loosely to the bumper braces with
the bolts, washers and bolts.
3. Install bolts (1) attaching bumper to receiver.
4. Connect the trailer lamp connectors.
2001/02 LSSV Truck
8-108 Bumpers
Body and Accessories
5. Connect the blackout marker lamp connectors (2) and the
ground leads (1) from mounting stud.
Notice: Refer to Fastener Notice in Cautions and Notices.
6. Finish installing all attaching hardware.
Tighten
Tighten the frame bracket nuts to 80-100 N•m (59-74 lb ft)
Tighten the four brace nuts to 80-100 N•m (59-74 lb ft)
7. Install the upper and lower step pads.
8. Connect the 12V and 24V cables of the left battery and
the negative cable of the right battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
9. Install the Pintle tow hook. Refer to Pintle Hook
Replacement.
2001/02 LSSV Truck
Body and Accessories
Bumpers 8-109
Bumper Replacement – Rear (Military
Hitch)
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Disconnect the negative battery cable of the right battery
and the 12V and 24V cables of the left battery.
2. Disconnect the blackout marker lamps by depressing the
tab releases (2), and remove the ground (1) from
mounting stud.
3. Disconnect the trailer lamp, connectors (2,3) by
depressing the tab releases.
4. Remove the clevis/tie-down. Refer to Clevis/Tie-Down
Replacement – Rear.
5. Remove pintle hook from the receiver.
2001/02 LSSV Truck
8-110 Bumpers
Body and Accessories
6. Remove the lower step pad.
7. Remove lower bolts attaching bumper to receiver.
8. Remove the bolts and nuts holding the rear bumper to the
brace(s), at the lower attaching points.
9. Remove the bolts and nuts holding the rear bumper to the
brace(s), at the upper attaching points.
10. Remove the bolts, washers and nuts holding the rear
bumper to the frame rail.
11. Remove the rear bumper (1).
Installation Procedure
1. Install the rear bumper (1) loosely to the frame rail with
the bolts and the washers and nuts.
2. Install the rear bumper loosely to the brace(s), at the
upper attaching points with the bolts and nuts.
3. Install the rear bumper loosely to the brace(s), at the
lower attaching points with the bolts and nuts.
4. Connect the trailer lamp connectors (2,3).
2001/02 LSSV Truck
Body and Accessories
Bumpers 8-111
5. Connect the blackout marker lamp connector (2), the
ground leads (1) from the mounting bracket.
Notice: Refer to Fastener Notice in Cautions and Notices.
6. Finish installing all attaching hardware.
Install the nuts and bolts.
Tighten
Tighten the frame bolts to 80-100 N•m (59-74 lb ft)
Tighten the brace bolts to 80-100 N•m (59-74 lb ft)
7. Connect the 12V and 24V cables of the left battery and
the negative cable of the right battery.
8. Install the lower step pad.
9. Install the pintle hook into the receiver.
Tighten
Tighten the battery cable connections to 17 N•m (13 lb ft)
2001/02 LSSV Truck
8-112 Bumpers
Body and Accessories
Clevis/Tie-Down Support Replacement –
Rear Factory Hitch (Pickup Models)
Removal Procedure
1. Remove the rear bumper. Refer to Bumper Replacement
– Rear or Bumper Replacement – Rear (Factory Hitch).
2. Remove clevis. Refer to Clevis/Tie Down Replacement –
Rear.
3. Remove the bolts (1), washers and nuts holding the tiedown bracket to the (2) receiver mount.
4. Remove the tie-down bracket (2).
Installation Procedure
1. Install the tie-down bracket (2), aligning the bolt holes.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install brace (3) and bolts (1).
Tighten
Tighten the bolts to 78 N•m (58 lb ft).
3. Install the rear bumper. Refer to Bumper Replacement –
Rear or Bumper Replacement – Rear (Factory Hitch).
Clevis/Tie-Down Bracket Replacement –
Rear (Utility/Extended Cab)
Removal Procedure
1. Remove the rear clevis. Refer to Clevis/Tie-Down
Replacement – Rear.
2. Remove bolt (2) from clevis mount.
3. Remove nuts and bolts (1) from clevis mount.
4. Remove clevis mount (3) from frame.
2001/02 LSSV Truck
Body and Accessories
Installation Procedure
Bumpers 8-113
1. Install clevis mount(s) to frame.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install bolts (1) and tighten.
Tighten
Tighten bolts to 67-88 N•m (49-65 lb ft)
3. Install bolt (2) and tighten.
Tighten
Tighten bolt to 88-115 N•m (65-85 lb ft)
4. Install the rear clevis. Refer to Clevis/Tie-Down
Replacement – Rear.
Clevis/Tie-Down Bracket Replacement –
Rear (Crewcab)
Removal Procedure
1. Remove the rear clevis. Refer to Clevis/Tie-Down
Replacement – Rear.
2. Remove bolts (1) and nuts (2).
3. Remove clevis/tie-down bracket from the receiver.
Installation Procedure
1. Install clevis/tie-down bracket in receiver.
2. Install bolts (1) and nuts (2) and tighten.
3. Install the rear clevis. Refer to Clevis/Tie-Down
Replacement – Rear.
2001/02 LSSV Truck
8-114 Bumpers
Body and Accessories
Pintle Hook Replacement
Removal Procedure
Note:
1.
2.
3.
This procedure is the same for the factory receiver.
Remove the spring clip from the retaining pin.
Remove the retaining pin from the receiver.
Pull the tow hook out of the receiver.
Installation Procedure
1. Push tow hook into receiver until holes line up.
2. Install retaining pin into hole.
3. Install spring clip into retaining pin.
Clevis/Tie-Down Replacement – Rear
Removal Procedure
1. Remove nut (1) and bolt (2).
2. Remove clevis (3) from frame.
2001/02 LSSV Truck
Body and Accessories
Installation Procedure
Bumpers 8-115
1. Install clevis (3) to frame.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install bolt (2) and nut (1) and tighten.
Notice: Clevis must move once torqued. Do not over torque.
Tighten
Tighten nut and bolt to 200 N•m (148 lb ft).
2001/02 LSSV Truck
8-116 Bumpers
Description and Operation
Bumpers
The equipment described includes all bumper
assemblies front and rear that are offered or modified
for the military vehicles. The bumper components
provided in this military package are rugged and
durable and are designed for the rigors of limited offroad conditions. Repairs on these items include the
radiator brush guard, several reinforcement brackets or
braces, clevis tie-down attachments and pintle hooks.
The repair of some sub-assemblies require removal of
the rear bumpers for access while others require
removal of electrical components and lamp harness
connections.
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Body Front End 8-117
Body Front End
Specifications
Fastener Tightening Specifications
Specification
Application
Metric
English
Battery Cable Connection
17 N•m
13 lb ft
Clevis/Tie-Down Bolts
200 N•m
148 lb ft
Slave Connector Bolts
3 N•m
2 lb ft
Slave Connector Terminal Bolts
6 N•m
4 lb ft
Winch Mount Bolts
68 N•m
50 lb ft
47-54 N•m
35-40 lb ft
Winch to Mount Bolts
2001/02 LSSV Truck
8-118 Body Front End
Body and Accessories
Repair Instructions
Slave Connector Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Disconnect the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove negative cable from connection (2).
3. Remove positive cable from connection (3).
4. Remove the four bolts (1) and nuts holding the
booster/slave connector assembly and gasket to the
bracket.
Installation Procedure
Notice: The gasket must mount to the square back of the
booster/slave connector assembly.
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install the booster/slave connector with gasket and tighten
bolts (1).
Tighten
Tighten the four bolts to 3 N•m (2 lb ft).
2. Install the positive battery cable to the connection (3).
3. Install the negative battery cable to the connection (2).
Tighten
Tighten both connections to 6 N•m (4 lb ft).
4. Install the negative cable of the right battery and the 12V
and 24V (6) cables of the left battery.
Tighten
Tighten battery cables to 17 N•m (13 lb ft).
Winch Mount Replacement (Pickup
Models)
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices
1. Disconnect the negative battery cable of the right battery
and the 12V and 24V cables of the left battery.
2. Remove the winch. Refer to Winch Replacement (Pickup
Models).
3. Remove clevis bolts (1). Remove clevises.
4. Remove upper support bolts (3).
5. Remove lower mount bolts (2).
6. Remove mount on left side (right side similar).
2001/02 LSSV Truck
Body and Accessories
Installation Procedure
Body Front End 8-119
Notice: Refer to Fastener Notice in Cautions and
Notices.
1. Place mount on vehicle, install bolts (2) and
tighten.
Tighten
Tighten mount bolts to 68 N•m (50 lb ft).
2. Install upper support bolts (3) and tighten.
Tighten
Tighten support bolts to 68 N•m (50 lb ft).
3. Install clevises and bolts (1).
Tighten
Tighten clevis bolts to 200 N•m (148 lb ft).
4. Install winch. Refer to Winch Replacement
(Pickup Models).
5. Connect electrical connector for the winch.
6. Install the negative cable of the right battery and
the 12V and 24V cables of the left battery.
Tighten
Tighten battery cables to 17 N•m (13 lb ft).
Winch Replacement (Pickup Models)
Removal Procedure
Caution: Refer to Battery Disconnect Caution in
Cautions and Notices
1. Disconnect the negative battery cable of the right
battery and the 12V and 24V cables of the left
battery.
2. Remove the two lower bolts (1).
2001/02 LSSV Truck
8-120 Body Front End
Body and Accessories
3. Remove winch cover (1).
4. Remove positive and negative cable connection from
winch. Note cable routing for installation.
5. Remove the bolts (2) from the front of the winch mount.
6. Remove cable from fairlead. Remove fairlead.
7. Lift winch out of mount.
Installation Procedure
1. Install winch in mount. Verify routing position of positive
and negative cables.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Position fairlead on front of mount and install winch bolts
(2).
Tighten
Tighten bolts to 47-54 N•m (35-40 lb ft).
3. Install positive and negative cable and tighten.
4. Install top winch cover (1).
5. Install lower winch bolts (1) and tighten.
Tighten
Tighten bolts to 47-54 N•m (35-40 lb ft).
6. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cables to 17 N•m (13 lb ft).
2001/02 LSSV Truck
Body and Accessories
Body Front End 8-121
Description and Operation
Body Front End Description
The body front end consists of a modified radiator grille.
It includes three features critical to military vehicles.
The slave/booster is mounted in a hole cut into right
side of the radiator grille. The blackout headlamp is
mounted in a hole cut into the left side of the radiator
grille. The front blackout marker lamps are cut into the
space between the headlamp and the turn signal on
both sides.
The winch mounts, permanent and multi-mount, have
been added to both the Pickup models and
Tahoe/Suburban models. Refer to applicable
procedures for information or the Owner Manual
Supplement for how to use the winch.
2001/02 LSSV Truck
8-122 Seats
Body and Accessories
Seats
Specifications
Fastener Tightening Specifications
Specification
Application
Seat Bolts
2001/02 LSSV Truck
Metric
English
88 N•m
65 lb ft
Body and Accessories
Seats 8-123
Repair Instructions
Seat Replacement – Troop (Pickup
Models)
Removal Procedure
Notice: Note the clamp and stud arrangement for installation
later.
1. Remove the two bolts, nuts and clamps holding the seat
assembly to the box rail.
2. Fold the seat section to the seatback and install the tether
pins to the locking holes for easy removal.
3. Remove the two bolts and nylock nuts from the end of the
rail.
4. Remove the troop seat assembly.
Installation Procedure
Notice: The left and right seat assemblies are not
interchangeable. Match the mounting hole pattern of the seat
assembly before attempting to install.
1. Unfold the third seat back (from the cab) down.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. When properly aligned, install the two bolts, screws and
nuts to the end of the rail.
Tighten
Tighten the bolts to 88 N•m (65 lb ft).
3. Install the two clamps, bolts and nuts holding the seat
assembly to the holes within the openings at the middle
and forward end of the box rail.
Tighten
Tighten the bolts to 88 N•m (65 lb ft).
2001/02 LSSV Truck
8-124 Seats
Description and Operation
Troop Seats Description
The troop seats provide two benches with seating for
up to four troops on each side. Each bench is
anchored by three sets of fasteners to each box rail.
The seats can be folded up using tether pins to afford
more cargo space. They are equipped with a safety
strap which should be hooked across the rear end of
the box when occupied. Refer to the Owner’s Manual
Supplement for further details.
Seat Covers
Seat covers are installed on the interior seats to protect
the vehicle’s interior and are green or tan in color.
They allow full function of the seat controls and seat
belts.
2001/02 LSSV Truck
Body and Accessories
Body and Accessories
Interior Trim 8-125
Interior Trim
Specifications
Fastener Tightening Specifications
Specification
Application
Metric
English
Battery Cable Connections
17 N•m
13 lb ft
Equalizer Connections
12 N•m
110 lb in
Contactor Contact Terminal Nuts
5-6 N•m
45-55 lb in
Contactor Coil Terminal Nuts
1-2 N•m
12-18 lb in
Floor Mount Weapons Bolts
8 N•m
6 lb ft
Lower Weapons Mount Bolts
8 N•m
6 lb ft
Power Converter Connections
12 N•m
110 lb in
Side Trim Panel Screws (Utility)
2 N•m
1.5 lb ft
Upper Weapons Mount Bolts
8 N•m
6 lb ft
2001/02 LSSV Truck
8-126 Interior Trim
Body and Accessories
Repair Instructions
Rear Compartment Side Trim Panel
Replacement (Tahoe/Suburban)
Removal Procedure
1. Remove the third-pillar garnish molding. Refer to the Trim
Replacement – Third Pillar in the 2001/02 C/K Truck
Service Manual.
2. Remove the rear corner garnish molding. Refer to the
Garnish Molding Replacement – Rear Corner in 2001/02
C/K Truck Service Manual.
3. Remove the screws holding the side trim panel to the side
panel.
4. Remove retainer clips holding the trim panel to the
vehicle.
5. Remove the side trim panel.
2001/02 LSSV Truck
Body and Accessories
Installation Procedure
Interior Trim 8-127
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install the side trim panel with the screws.
Tighten
Tighten the screws to 2 N•m (1.5 lb ft).
2. Install the trim panel to the vehicle by pressing on the
retainer clips.
3. Install the rear corner garnish molding. Refer to Rear
Corner Garnish Molding Replacement – Rear Corner in
the 2001/02 C/K Truck Service Manual.
4. Install the third-pillar garnish molding. Refer to Trim
Replacement – Third Pillar in the 2001/02 C/K Truck
Service Manual.
2001/02 LSSV Truck
8-128 Interior Trim
Body and Accessories
Floor Mat Replacement (Pickup Models)
Removal Procedure
1. Remove bolts securing weapons mount (1) and remove
mount.
2. Remove floor mat. Refer to Carpet Replacement – Front
and Carpet Replacement – Rear in 2001/02 C/K Truck
Service Manual.
Installation Procedure
1. Using the old floor mat as a template cut weapons mount
holes in the new floor mat.
2. Install the floor mat. Refer to Carpet Replacement – Front
and Carpet Replacement – Rear in 2001/02 C/K Truck
Service Manual.
2001/02 LSSV Truck
Body and Accessories
Interior Trim 8-129
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install weapons mount (1) and install bolts.
Tighten
Tighten bolts to 8 N•m (6 lb ft).
Floor Mat Replacement (Tahoe/Suburban)
Removal Procedure
1. Remove bolts securing weapons mount (1) and remove
mount.
2. Remove floor mat. Refer to Carpet Replacement – Front
(Utility) in 2001/02 C/K Truck Service Manual.
2001/02 LSSV Truck
8-130 Interior Trim
Body and Accessories
Installation Procedure
1. Using the old floor mat as a template cut weapons mount
holes in the new floor mat.
2. Install the floor mat. Refer to Carpet Replacement Front
(Utility) in 2001/02 C/K Truck Service Manual.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install weapons mount (1). Install fasteners and tighten.
Tighten
Tighten bolts to 8 N•m (6 lb ft).
Government Vehicle Data Plate
Replacement
Removal Procedure
1. Drill out the four rivets.
2. Remove the plate.
2001/02 LSSV Truck
Body and Accessories
Installation Procedure
Interior Trim 8-131
1. Install the plate to the original holes by aligning.
Install the new rivets.
Weapons Support Replacement – Lower
Removal Procedure
1. Remove the two bolts (1) holding the support to the floor.
2. Remove the support (2).
Installation Procedure
1. Install the support (2) by aligning the bolts holes.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install the two bolts (1) holding the support to the floor,
tighten.
Tighten
Tighten the two bolts to 8 N•m (6 lb ft).
2001/02 LSSV Truck
8-132 Interior Trim
Body and Accessories
Weapons Mount Replacement – Upper
Removal Procedure
1. Remove the bolts (1) holding the upper mount to the inner
body.
2. Remove the upper weapons mount (2).
Installation Procedure
1. Install the upper weapons mount assembly (2) by aligning
to the body side inner upper panel.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install the bolts (1) to the assembly.
Tighten
Tighten the bolts to 8 N•m (6 lb ft).
Weapons Mount Replacement – Floor
Mount
Removal Procedure
1. Remove bolts securing weapons mount to the floor.
2. Remove weapons mount (1) from vehicle.
2001/02 LSSV Truck
Body and Accessories
Installation Procedure
Interior Trim 8-133
1. Install weapons mount (1) on floor aligning fastener holes.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install bolts in the mount and tighten.
Tighten
Tighten bolts to 8 N•m (6 lb ft).
24 Voltmeter Relay Replacement (Pickup
Models)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the cover (1) from the power converter (2).
3. Remove voltmeter relay (1) from connector (2).
2001/02 LSSV Truck
8-134 Interior Trim
Body and Accessories
Installation Procedure
1. Install voltmeter relay (1) into connector (2).
2. Install the cover (1) from the power converter (2).
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
24 Voltmeter Relay Replacement (Tahoe)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cable of the left battery.
2. Remove the cover from the trim panel.
3. Remove the relay (1) from the connector (3).
2001/02 LSSV Truck
Body and Accessories
Installation Procedure
Interior Trim 8-135
1. Install the relay (1) into the connector (3).
2. Install the cover onto the trim panel.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
24 Voltmeter Relay Replacement
(Suburban)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cable of the left battery.
2. Remove the left trim panel. Refer to Trim Panel
Replacement Rear quarter (utility left) in the 2001/02 C/K
Truck Service Manual.
3. Remove the voltmeter relay (2) from the connector (3).
2001/02 LSSV Truck
8-136 Interior Trim
Body and Accessories
Installation Procedure
1. Install the voltmeter relay (2) into the connector (3).
2. Install the left trim panel. Refer to Trim Panel
Replacement Rear quarter (utility left) in the 2001/02 C/K
Truck Service Manual.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
Contactor Replacement (Pickup Models)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cable of the left battery.
2. Remove the cover (2) from the equalizer (1).
2001/02 LSSV Truck
Body and Accessories
Interior Trim 8-137
3. Remove the bolts (3) and nuts (1) securing the contactor
(2) to the cover.
Notice: A back up wrench must be used to hold the bottom nut
stationary.
4. Remove the wiring from the contactor terminals. Note
removal position of wiring for installation.
Installation Procedure
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install the wiring to the contactor terminals in the same
position as removed.
Notice: A back up wrench must be used to hold the bottom nut
stationary.
Tighten
Tighten the larger contact terminal nuts to 5-6 N•m (45-55
lb in).
Tighten
Tighten the smaller coil terminal nuts to 1-2 N•m (12-18 lb
in).
2. Install the contactor (2) to the cover and secure with bolts
(3) and nuts (1).
3. Install the cover (2) to the equalizer (1).
4. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
2001/02 LSSV Truck
8-138 Interior Trim
Body and Accessories
Contactor Replacement (Tahoe)
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cable of the left battery.
2. Remove the top cover of the trim panel to gain access to
the contactor (2).
3. Remove bolts securing contactor to the bracket.
Notice: A back up wrench must be used to hold the bottom nut
stationary.
4. Remove the wiring on the contactor (2). Note position of
wiring for installation.
Installation Procedure
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install the wiring to the contactor (2). The same position
as removed.
Notice: A back up wrench must be used to hold the bottom nut
stationary.
Tighten
Tighten the larger contact terminal nuts to 5-6 N•m (45-55
lb in).
Tighten
Tighten the smaller coil terminal nuts to 1-2 N•m (12-18 lb
in).
2. Install the contactor (2) to the mounting bracket.
3. Install the top cover to the trim panel.
4. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten the battery cable connections to 17 N•m (13 lb ft).
Contactor Replacement (Suburban)
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and 12V
and 24V cables of the left battery.
2. Remove the left trim panel. Refer to Trim Panel
Replacement-Rear Quarter (Utility Left) in the 2001/02
C/K Truck Service Manual.
2001/02 LSSV Truck
Body and Accessories
Interior Trim 8-139
Notice: A back up wrench must be used to hold the bottom nut
stationary.
3. Remove the wiring from the contactor (1). Note the
position of wires for installation.
4. Remove screws securing contactor to the body.
Installation Procedure
1. Install screws securing contactor (1) to the body.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install wiring to contactor in the same position as
removed.
Notice: A back up wrench must be used to hold the bottom nut
stationary.
Tighten
Tighten the larger contact terminal nuts to 5-6 N•m (45-55
lb in).
Tighten
Tighten the smaller coil terminal nuts to 1-2 N•m (12-18 lb
in).
3. Install the left trim panel. Refer to Trim Panel
Replacement – Rear Quarter (utility left) in the 2001/02
C/K Truck Service Manual.
4. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
2001/02 LSSV Truck
8-140 Interior Trim
Body and Accessories
Power Converter/Bracket Replacement
(Pickup Models)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove cover (1) from power converter (2).
3. Remove wiring from power converter terminals. Note the
removal position of wiring for installation.
4. Remove lower bolts (1) from the power converter bracket.
5. Remove upper bolts (2) from the power converter bracket.
Remove bracket with power converter from vehicle.
6. Remove power converter by removing bolts (3).
Installation Procedure
1. Install power converter to bracket and tighten bolts (3).
2. Install mounting bracket to vehicle and tighten lower bolts
(1) and upper bolts (2).
2001/02 LSSV Truck
Body and Accessories
Interior Trim 8-141
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the wiring to the power converter terminal in the
same position as removed.
Tighten
Tighten converter connections to 12 N•m (110 lb ft).
4. Install cover (1) on power converter (2).
5. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
Power Converter Replacement (Tahoe)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cable of the left battery.
2. Remove bolts (1) securing converter to the bracket.
3. Lift converter (2) out of bracket enough to gain access to
the wiring connections.
4. Remove the wiring from the connectors. Note removal
position of wiring for installation.
Installation Procedure
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install wiring to the converter connection in the same
position as removed and tightened.
Tighten
Tighten converter connections to 12 N•m (110 lb in).
2. Install converter (2) in bracket and tighten bolts (1)
Important: Verify that the wiring is not pinched and that the
converter terminals are not touching the metal bracket.
3. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten the battery cable connections to 17 N•m (13 lb ft).
2001/02 LSSV Truck
8-142 Interior Trim
Body and Accessories
Power Converter Replacement (Suburban)
Removal Procedure
Caution. Refer to Battery Disconnect Cautions in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cable of the left battery.
2. Remove the left trim panel. Refer to Trim Panel
Replacement – Rear Quarter (utility left) in the 2001/02
C/K Truck Service Manual.
3. Remove cover (1) to gain access to wiring connections.
4. Remove wiring connections from top of converter. Note
removal position for installation.
5. Remove bolts (2) and brace (3) left side shown right is
similar.
6. Remove power converter from vehicle.
Installation Procedure
1. Install power converter in vehicle.
2. Install brace (3) and bolts (2). Tighten.
3. Install wiring to connections on converter in the same
position as removed.
4. Install cover (1) on power converter.
2001/02 LSSV Truck
Body and Accessories
Interior Trim 8-143
5. Install the left trim panel. Refer to Trim Panel
Replacement-Rear Quarter (utility left) in the 2001/02 C/K
Truck Service manual.
Notice: Refer to Fastener Notice in Cautions and Notices.
6. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
Battery Equalizer/Bracket Replacement
(Pickup Models)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices
1. Remove the negative cable from the right battery and the
12V and 24V cables of the left battery.
2. Remove cover (2) from equalizer and lay aside.
Note: Contactor (3) will remain on the cover.
3. Remove the wiring from the equalizer (1) connections
Note removal positions for installation.
4. Remove lower bolts (3) from bracket.
5. Remove upper bolts (1) from bracket and remove from the
vehicle.
6. Remove bolts (2) securing equalizer (4) to the bracket.
2001/02 LSSV Truck
8-144 Interior Trim
Body and Accessories
Installation Procedure
1. Install equalizer (4) to the bracket and secure with bolts
(2).
2. Install bracket with equalizer in vehicle.
3. Secure bracket with lower bolts (3) and upper bolts (1).
Notice: Refer to Fastener Notice in Cautions and Notices.
4. Install the wiring to the equalizer connections in the same
position as removed.
Tighten
Tighten the equalizer connections to 12 N•m (110 lb in).
5. Install cover (2) over the end of the equalizer (1).
6. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections 17 N•m (13 lb ft).
Battery Equalizer Replacement (Tahoe)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the power converter. Refer to Power Converter
Replacement (Tahoe).
3. Remove the cover from the side panel to gain access to
the equalizer.
4. Remove the bolts (3) securing equalizer (4) to mounting
bracket.
5. Remove wiring connections from the equalizer. Note
removal position of wiring for installation.
2001/02 LSSV Truck
Body and Accessories
Installation Procedure
Interior Trim 8-145
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install wiring to the converter connection in the same
position as removed and tighten.
Tighten
Tighten the equalizer connections to 12 N•m (110 lb in).
2. Install equalizer (4) on mounting bracket and tighten bolts
(3).
3. Install top trim cover on panel.
4. Install the power converter. Refer to Power Converter
Replacement (Tahoe).
5. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
Battery Equalizer Replacement (Suburban)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the left trim panel. Refer to Trim Panel
Replacement Rear Quarter (utility left) in the 2001/02 C/K
Truck service manual.
3. Remove equalizer wiring from connectors (1). Note
removal position of wiring for installation.
4. Remove bolts securing equalizer (2) to bracket.
5. Slide equalizer from bracket, remove from vehicle.
2001/02 LSSV Truck
8-146 Interior Trim
Body and Accessories
Installation Procedure
1. Slide the equalizer (2) into bracket and secure with bolts.
2. Install wiring to equalizer connections (1) in same location
as removed.
3. Install the left trim panel. Refer to Trim Panel
Replacement Rear Quarter (utility left) in the 2001/02 C/K
Truck Service Manual.
Notice: Refer to Fastener Notice in Cautions and Notices.
4. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
Power Converter/Equalizer Bracket
Replacement (Tahoe)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the right battery.
2. Remove the Power Converter. Refer to Power Converter
Replacement (Tahoe).
3. Remove the Battery Equalizer. Refer to Battery Equalizer
Replacement (Tahoe).
4. Remove the Power Converter contactor mounting bolts
from bracket.
5. Remove the upper bolts (1) and lower bolts (2).
6. Remove mounting bracket (4).
7. Drill out rivnuts (3) (TX 016183) if damaged.
2001/02 LSSV Truck
Body and Accessories
Installation Procedure
Interior Trim 8-147
1. Install rivnuts (3) (TX 016183) if removed.
2. Install mounting bracket (4) and tighten lower mounting
bolts (2) and upper bolts (1).
3. Install the power converter contactor onto the mounting
bracket.
4. Install the battery equalizer. Refer to Battery Equalizer
Replacement (Tahoe).
5. Install the power converter. Refer to Power Converter
Replacement (Tahoe).
Notice: Refer to Fastener Notice in Cautions and Notices.
6. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
Power Converter/Equalizer Bracket
Replacement (Suburban)
Removal Procedure
Caution. Refer to Battery Disconnect Caution in Cautions
and Notices.
1. Remove the negative cable of the right battery and the
12V and 24V cables of the left battery.
2. Remove the left trim panel. Refer to Trim Panel
Replacement Rear Quarter (utility left) in the 2001/02 C/K
Truck Service Manual.
3. Remove the power converter. Refer to Power Converter
Replacement (Suburban).
4. Remove the battery equalizer. Refer to Battery Equalizer
Replacement (Suburban).
5. Remove bolts (1) securing bracket (2) to vehicle body.
Right side shown left side similar.
2001/02 LSSV Truck
8-148 Interior Trim
Body and Accessories
Installation Procedure
1. Install bolt (1) securing bracket (2) to the vehicle body.
Right side shown left side similar.
2. Install the battery equalizer. Refer to Battery Equalizer
Replacement (Suburban).
3. Install power converter. Refer to Power Converter
Replacement (Suburban).
4. Install the left trim panel. Refer to Trim Panel
Replacement Rear Quarter (Utility Left) in the 2001/02
C/K Truck Service Manual.
Notice: Refer to Fastener Notice in Cautions and Notices.
5. Install the negative cable of the right battery and the 12V
and 24V cables of the left battery.
Tighten
Tighten battery cable connections to 17 N•m (13 lb ft).
2001/02 LSSV Truck
Body and Accessories
Interior Trim 8-149
Description and Operation
Interior Description
The interior trim options for these vehicles include
special weapons supports for the M14 and M16
firearms as well as a modification to the side trim panel
in the utility vehicle for the 12V/24V converter and/or
batter equalizer.
Refer to the Owner’s Manual Supplement for weapon
mount operation and use.
2001/02 LSSV Truck
8-150 Body Rear End
Body and Accessories
Body Rear End
Specifications
Fastener Tightening Specifications
Specification
Application
Metric
English
Cargo Cover Bow Strap Retaining Nuts
5 N•m
4 lb ft
Cargo Cover Front End Rail Bolts
8 N•m
6 lb ft
Cargo Cover Rail and Hinge/Upward Bolts
8 N•m
6 lb ft
Cargo Cover Rail Outside Bolts
26 N•m
19 lb ft
Cargo Cover Strut Bolts
5 N•m
4 lb ft
47-65 N•m
35-48 lb ft
Cargo Tie-Down Eye Bolts
2001/02 LSSV Truck
Body and Accessories
Body Rear End 8-151
Repair Instructions
License Plate Bracket Replacement
Removal Procedure
1.
2.
3.
4.
Remove the license plate from the bracket.
Disconnect electrical connector from the bracket.
Remove the bolts (1) from the bracket.
Remove the bracket (2) from the bumper.
Installation Procedure
1.
2.
3.
4.
Install the bracket (2) onto bumper and align the holes.
Install the bolts (1) through bracket and bumper.
Connect the electrical connector.
Install the license plate onto the bracket.
Cargo Cover Side Rail and Hinge
Replacement
Removal Procedure
1. Remove the cargo cover, the top bows and side struts.
Refer to Cargo Cover Top Bows Replacement and Cargo
Cover Strut Replacement.
2. Remove the troop seats. Refer to Seat Replacement –
Troop (Pickup Models) in Seats.
2001/02 LSSV Truck
8-152 Body Rear End
Body and Accessories
3. Remove the four bolts and nuts holding the two rail
adapter plates to the side rail.
4. Remove the two bolts and nuts holding the bow hinge
bracket.
5. Remove the side rail and adapter rail.
6. Remove the bow hinge bracket.
7. Remove the side rail.
8. Remove the side rail adapter.
9. Drill out the four existing rivnuts (if damaged) from the box
rail.
Installation Procedure
1. Apply two sided foam tape to the underside of the rails
and to the edges of the mounting holes.
2. Install rivnuts to the existing holes (if damaged) using a
rivnut installer.
2001/02 LSSV Truck
Body and Accessories
Body Rear End 8-153
Notice: Do not use the jacknuts supplied in the kit. Use rivnuts
(TX016183) instead.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the side rail over the adapter plates, with the two
outside bolts and the two upward facing bracket bolts and
nuts.
Tighten
Tighten the two outside bolts to 26 N•m (19 lb ft).
Tighten the two upward facing bolts to 8 N•m (6 lb ft).
4. Install side rail adapter plates, front and rear, by aligning
the bolt holes to the holes in the box.
5. Install the troop seats. Refer to Seat Replacement –
Troop (Pickup Models) in Seats.
6. Install the side struts, top bows and cargo cover. Refer to
Cargo Cover Strut Replacement and Cargo Cover Top
Bows Replacement.
Cargo Cover Front End Rail Replacement
Removal Procedure
1. Remove the cargo cover from the front of the cargo cover
assembly. Refer to Cargo Cover Replacement.
2. Remove the four bolts from the front end rails as needed.
3. Remove the four rivnuts by drilling out (if damaged).
2001/02 LSSV Truck
8-154 Body Rear End
Body and Accessories
Installation Procedure
1. Apply two sided foam tape to the underside of the rails
and to the edges of the mounting holes.
Notice: Do not use the jacknuts supplied in the kit. Use rivnuts
(TX0016183) instead.
2. Install the four rivnuts (if damaged) to the mounting holes
using a rivnut installer.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the two front end rails to the front end of the box
with four bolts over the four rivnuts.
Tighten
Tighten the four bolts to 8 N•m (6 lb ft).
4. Install the front of the cargo cover to the front end rail as
needed. Refer to Cargo Cover Replacement.
Cargo Cover Rear End Rail Replacement
Removal Procedure
1. Remove the cargo cover from the end gate side of the
cargo cover assembly. Refer to Cargo Cover
Replacement.
2. Remove the four bolts from the end gate rail as needed.
3. Remove the four rivnuts by drilling out (if damaged).
Installation Procedure
1. Apply two sided foam tape to the underside of the rail and
to the edges of the mounting holes.
Notice: Do not use the jacknuts supplied in the kit. Use rivnuts
(TX0016183) instead.
2. Install the four rivnuts (if damaged) to the mounting holes
using a rivnut installer.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the end gate rail over the four rivnuts with four
bolts.
Tighten
Tighten the four bolts to 8 N•m (6 lb ft).
4. Install the cargo cover to the rear end as needed. Refer
to Cargo Cover Replacement.
2001/02 LSSV Truck
Body and Accessories
Body Rear End 8-155
Cargo Cover Strut Replacement
Removal Procedure
1. Remove the cargo cover and top bows. Refer to Cargo
Cover Replacement and Cargo Cover Top Bows
Replacement.
2. Remove the three front strut bolts holding the three side
struts to the hinge bracket.
3. Remove the six nylock nuts.
4. Remove the three side struts with the six plastic bushings.
(Replace if damaged.)
Installation Procedure
1. Install the six plastic bushings, one to the inside and one
to the outside of the base hole of each side strut.
2. Install the front strut 857.25 mm (33.75 in) inside the base
of the hinge bracket at the first hole. Use a nylock nut on
the inboard side and a bolt on the outboard side of the
bracket.
3. Install the center strut 571.50 mm (22.5 in) inside the
bracket at the mid-level hole with a nylock and bolt in
similar fashion.
Notice: Refer to Fastener Notice in Cautions and Notices.
4. Install the rear strut 821.43 mm (32.34 in) at the top hole
with the nylock and bolt in similar fashion.
Tighten
Tighten the strut bolt to 5 N•m (4 lb ft).
5. Install the cargo cover and top bows. Refer to Cargo
Cover Replacement and Cargo Cover Top Bows
Replacement.
2001/02 LSSV Truck
8-156 Body Rear End
Body and Accessories
Cargo Cover Top Bows Replacement
Removal Procedure
1. Remove the cargo cover. Refer to Cargo Cover
Replacement.
2. Remove the strap tensioners from the front and rear top
bows by withdrawing from the side rail loop.
3. Remove the six pins (1) holding the three top bows to the
six side struts.
4. Remove the three top bows from the struts.
5. Slide the strap off each top bow. Remove the bows from
the vehicle.
Installation Procedure
1. Slide the strap onto the top bows at the center.
2. Attach the retainer pin (1) assembly as shown at the base
of each bow end.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Attach the retainer cover strap assembly to the holes on
both the left and right sides of the center top bow as
shown. Attach the straps to the inboard sides of each
with a nut.
Tighten
Tighten the two cover strap retaining nuts to 5 N•m (4 lb
ft).
4. Slide the front roof bow onto the front struts and install the
pins into the bow/strut holes.
5. Slide the center roof bow on the center struts and install
the pins into the bow/strut holes.
6. Slide the rear roof bow onto the rear struts and install the
pins into the bow/strut holes.
7. Install the strap tensioners to the front and rear top bows
by threading them through the retainer loop of the side
rail.
Note: The buckle should face inboard.
8. Install the cargo cover. Refer to Cargo Cover
Replacement.
2001/02 LSSV Truck
Body and Accessories
Body Rear End 8-157
Cargo Cover Replacement
Removal Procedure
1. Unsnap and unzip the corners of the front and rear flaps
and roll the cargo cover up over the top.
2. Remove the cargo cover from the side rail and end gate
retainers by releasing tension and removing hook. Pull
cover free.
3. Untie, release or unbuckle all cover retainers.
4. Remove the cargo cover.
Installation Procedure
Important: All trailing edges must fall to the proper length at
each side of the box rail. All tether ties must appear on the
interior. Provide adequate slack between the bow straps and
the cover. The new cover will be a tighter fit.
1. Install the cargo cover to the top bows and align so that
the zippers are at the corners.
2. Install or attach all interior retainers to the bows, struts
and loops.
3. Zip the flaps down and snap on as needed.
4. Install the cover to the front, end and side in hooks and
pull strap at the base of the cover as needed.
Fiberglass Top Replacement
Removal Procedure
1. Remove electrical connection for light (if equipped).
2. Remove bolts (1) securing cap to bed rails. Left side
shown, right side similar.
3. With the aid of an assistant, remove the top from the
vehicle.
4. Remove old foam tape from bed rails.
2001/02 LSSV Truck
8-158 Body Rear End
Body and Accessories
Installation Procedure
1.
2.
3.
4.
Install new foam tape to bed rails.
With the aid of an assistant place the top on the bed rails.
Install bolts (1) and tighten.
Connect electrical connection for light (if equipped).
Cargo Tie-Down Eye Replacement
Removal Procedure
1. Remove the large washer/small-large washer combination
and a bolt, depending on the order of arrangement.
2. Remove the damaged cargo eye(s) from the pickup box.
Installation Procedure
1. Install the cargo eye(s) in the mounting hole(s).
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install the reinforced anchor bolt assembly and tighten.
Tighten
Tighten the bolt assemblies to 47-65 N•m (35-48 lb ft).
2001/02 LSSV Truck
Body and Accessories
Body Rear End 8-159
Cargo Cover Stowage Replacement
1. Release the front and rear support straps.
2. From the rear of the vehicle, push the bows and canvas
forward, folding the canvas around the bows.
Note: The cover may also be folded neatly and stored behind
the seat in the cab.
3. Completely fold the bows down against the front of the
cargo box and secure them with the front straps.
2001/02 LSSV Truck
8-160 Body Rear End
Body and Accessories
Description and Operation
Fiberglass Top
Body Rear End
The fiberglass top is a hard top cover supported by the
bed rails and has side and back windows that are able
to open and lock. Refer to Owner’s Manual
Supplement for further details.
The features described here are exclusive to the
pickup/cargo vehicle. The pickup or cargo vehicle is
equipped with several military options including a cargo
cover, troop seats (left and right), tie-down eyes and
fiberglass top.
Cargo Cover
The cargo cover is a rain resistant canvas top cover
supported by bows and struts and attached by rails to
the cargo box. It can be buttoned down with hooks and
snaps or zipped closed. It may also be rolled up with
straps or folded and stowed while not in use.
Cargo Cover Cleaning
Mildewy areas should be cleaned by scrubbing with a
dry brush. Never use solvents. If necessary to use
water to remove dirt, it should not be used until the
mildew has been removed. After removing the mildew,
examine the fabric and look for deterioration. If the
canvas has deteriorated replace it.
2001/02 LSSV Truck
Tie Down Eyes
The tie-down eyes are metal eyelets bolted into the box
bed with reinforced hardware. They are used to secure
equipment to the box floor and have a maximum
vertical resistance rating of 300 kg (660 lbs) and a
maximum horizontal resistance rating of 200 kg (450
lbs).
Body and Accessories
Paint/Coatings 8-161
Paint/Coatings
Paint Codes
Exterior and Interior Colors
Location/Color
Fed.-std.-595 B
PPG No.
Green
34094
CA 8211 / I 5086
Flat Brown (Camo)
34094
CA 8211 / I 7036
Flat Black (Camo)
34094
CA 8211 / I 8007
For specific paint/coating details, contact PPG Automotive Coatings at 1-818-549-7772.
2001/02 LSSV Truck
8-162 Frame and Underbody
Body and Accessories
Frame and Underbody
Specifications
Fastener Tightening Specifications
Specification
Application
Metric
English
Receiver to Bumper Bolts
125 N•m
92 lb ft
Receiver to Frame Bolts
125 N•m
92 lb ft
2001/02 LSSV Truck
Body and Accessories
Frame and Underbody 8-163
Repair Instructions
Military Rear Receiver Hitch Replacement
Removal Procedure
1. Remove the hitch from the receiver.
2. Remove the clevis mounts. Refer to Clevis/Tie-Down
Support Replacement – Rear Factory Hitch (Pickup
Models) in Bumpers.
3. Remove the bolts (3) from the bumper.
4. Remove the bolts (1) from the frame.
5. Remove the receiver (2) from the vehicle.
Installation Procedure
1. Install the receiver (2) on the vehicle and loosely install
the bolts (1) in the frame.
2. Loosely install the bolts (3) in the bumper.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Tighten the receiver bolts (1) and (3).
Tighten
Tighten the bolts to 125 N•m (92 lb ft).
4. Install the clevis mounts. Refer to Clevis/Tie-Down
Bracket Replacement – Rear (Crewcab) in the Bumpers
section.
5. Install the hitch in the receiver.
Front Winch Receiver Replacement
Removal Procedure
1. Remove front bumper. Refer to Front Bumper
Replacement (Tahoe/Suburban) or Front Bumper
Replacement (Pickup Models) in Bumpers.
2. Remove bolt (1) securing electrical connector (2) to the
front receiver.
2001/02 LSSV Truck
8-164 Frame and Underbody
Body and Accessories
3. Remove bolt (5) and remove clevis/tie-down (4) from
frame.
4. Remove bolts (1,3) securing receiver to the frame.
5. Remove receiver (2) from frame.
Installation Procedure
1.
2.
3.
4.
Install receiver (2) to the frame and align holes.
Install bolts (1,3) securing receiver to frame.
Install clevis/tie-down (4) and bolt (5).
Tighten all bolts.
5. Install connector (2) on receiver and tighten bolt (1).
6. Install the front bumper. Refer to Front Bumper
Replacement (Tahoe/Suburban).
2001/02 LSSV Truck
Body and Accessories
Frame and Underbody 8-165
Description and Operation
Frame and Underbody Description
The underbody equipment includes the hitch receiver
rear and hitch receiver front.
Hitch Receiver
Hitch receiver is frame mounted. The receiver will
allow use of different components such as pintle hook
or a multi-mount winch. The hitch receiver is also
mounted on the front of the Utility vehicles.
The military hitch receiver is accessible through the
rear bumper to accommodate a higher trailer torque
height.
The factory hitch receiver is accessible through the
bottom of the bumper and will accommodate a standard
trailer torque height.
2001/02 LSSV Truck
INDEX
1
A
Auxiliary Lamp Extension Harness
Replacement – Rear ........................................... 8-33
Auxiliary Lamp Harness Replacement - Front ........ 8-32
Axle
Description
Front Axle Vent Tube Filter Description........... 4-11
Rear Axle Vent Tube Filter Description ........... 4-13
Repair
Front Axle Vent Tube Filter Replacement ....... 4-10
Rear Axle Vent Tube Filter Replacement ........ 4-12
B
Backup Lamps
Description
Backup Lamps Circuit of Operation................. 8-81
Diagnosis
Backup Lamps Inoperative .............................. 8-68
Backup Lamps Operate in Blackout (B/O)
Mode ............................................................8-73
Battery
Description
Battery Description (12V and 24V) .................. 6-42
Repair
Battery Booster/Slave Junction Block
Replacement ................................................ 6-40
Battery Equalizer Replacement (Suburban).. 8-145
Battery Equalizer Replacement (Tahoe) ....... 8-144
Battery Equalizer/Bracket Replacement
(Pickup Models) ......................................... 8-143
Battery Tray/Battery Replacement .................. 6-39
Blackout (B/O) Lighting
Blackout (B/O) Headlamp Always On ................. 8-68
Description
Blackout (B/O) Lighting Circuit of Operation ... 8-81
Blackout (B/O) Lighting Description................. 8-81
Diagnosis
Blackout (B/O) Headlamp Inoperative ............. 8-66
Repair
Blackout (B/O) Switch Replacement ............... 8-86
Voltmeter, Blackout (B/O) Switch Panel
Replacement ................................................ 8-85
Blackout (B/O) Marker Lamps
Diagnosis
Blackout (B/O) Marker Lamps Inoperative ...... 8-70
Blackout Lighting
Diagnosis
Headlamps Operate in Blackout (B/O) Mode .. 8-68
Blackout Marker Lamps
Diagnosis
Blackout (B/O) Marker Lamps Always On ....... 8-71
Body Front End
Description
Body Front End Description........................... 8-121
Repair
Slave Connector Replacement ..................... 8-118
Winch Mount Replacement (Pickup Models) 8-118
Winch Replacement (Pickup Models) ........... 8-119
Specifications
Fastener Tightening ...................................... 8-117
Body Rear End
Description
Body Rear End.............................................. 8-160
Repair
Cargo Cover Front End Rail Replacement ... 8-153
Cargo Cover Rear End Rail Replacement .... 8-154
Cargo Cover Replacement............................ 8-157
Cargo Cover Side Rail and Hinge
Replacement ............................................. 8-151
Cargo Cover Stowage Replacement ............ 8-159
Cargo Cover Strut Replacement................... 8-155
Cargo Cover Top Bows Replacement .......... 8-156
Cargo Tie-Down Eye Replacement .............. 8-158
Fiberglass Top Replacement ........................ 8-157
License Plate Bracket Replacement ............. 8-151
Specifications
Fastener Tightening ...................................... 8-150
Bumpers
Description
Bumpers ........................................................ 8-116
Repair
Bumper Replacement – Rear
(Military Hitch)............................................ 8-109
Bumper Replacement – Rear
(Factory Hitch) ........................................... 8-106
Clevis/Tie-Down Bracket Replacement
– Rear (Crewcab) ...................................... 8-113
Clevis/Tie-Down Bracket Replacement –
Rear (Utility/Extended Cab)....................... 8-112
Clevis/Tie-Down Replacement – Front ......... 8-103
Clevis/Tie-Down Replacement – Rear.......... 8-114
Clevis/Tie-Down Support Replacement –
Front (Pickup Models) ............................... 8-104
Clevis/Tie-Down Support Replacement –
Front (Utility) .............................................. 8-105
Clevis/Tie-Down Support Replacement –
Rear Factory Hitch (Pickup Models).......... 8-112
Front Bumper Replacement
(Pickup Models)......................................... 8-101
Front Bumper Replacement
(Tahoe/Suburban) ..................................... 8-100
Pintle Hook Replacement.............................. 8-114
Radiator Grille Brush Guard Replacement ... 8-103
Specifications
Fastener Tightening Specifications................. 8-99
C
Cargo Cover
Repair
Cargo Cover Front End Rail Replacement ... 8-153
Cargo Cover Rear End Rail Replacement .... 8-154
Cargo Cover Replacement............................ 8-157
2001/02 LSSV Truck
2
INDEX
Cargo Cover Side Rail and Hinge
Replacement .............................................. 8-151
Cargo Cover Stowage Replacement ............. 8-159
Cargo Cover Strut Replacement ................... 8-155
Cargo Cover Top Bows Replacement ........... 8-156
Cargo Tie-Down Eye Replacement ............... 8-158
Circuit Breaker
Repair
Circuit Breaker Bracket Replacement ............. 6-39
Circuit Breaker Replacement – 12V or 24V .... 6-37
Clevis/Tie-Down
Repair
Clevis/Tie-Down Support Replacement –
Front (Utility)............................................... 8-105
Clevis/Tie-Down Bracket Replacement –
Rear (Crewcab).......................................... 8-113
Clevis/Tie-Down Bracket Replacement –
Rear (Utility/Extended Cab) ....................... 8-112
Clevis/Tie-Down Replacement – Front.......... 8-103
Clevis/Tie-Down Replacement – Rear .......... 8-114
Clevis/Tie-Down Support Replacement –
Front (Pickup Models)................................ 8-104
Clevis/Tie-Down Support Replacement –
Front (Utility)............................................... 8-105
Clevis/Tie-Down Support Replacement –
Rear Factory Hitch (Pickup Models) .......... 8-112
Contactor
Repair
Contactor Replacement (Pickup Models) ...... 8-136
Contactor Replacement (Suburban).............. 8-138
Contactor Replacement (Tahoe) ................... 8-138
E
Engine Electrical
Components
Starting and Charging Component Views ......... 6-9
Starting and Charging Connector End Views.. 6-22
Description
Battery (12V and 24V) ..................................... 6-42
Starting and Charging System......................... 6-42
Diagnosis
Battery Equalizer Inoperative .......................... 6-27
Contactor Inoperative ...................................... 6-28
Converter No Voltage ...................................... 6-25
Voltmeter Inoperative....................................... 6-29
Voltmeter Lamp Inoperative ............................ 6-27
Repair
24V Converter Fuse Replacement .................. 6-36
Battery Booster/Slave Junction Block Replacement
..................................................................... 6-40
Battery Tray/Battery Replacement .................. 6-39
Circuit Breaker Bracket Replacement ............. 6-39
Circuit Breaker Replacement – 12V or 24V .... 6-37
Jump Starting in Case of Emergency .............. 6-34
Voltage Regulator Test.................................... 6-31
Schematics ............................................................ 6-3
Specifications
Fastener Tightening........................................... 6-3
2001/02 LSSV Truck
Exterior Trim
Description
Exterior Trim.................................................... 8-98
Repair
Radiator Grille Replacement ........................... 8-96
Spiecifications
Fastener Tightening Specifications................. 8-95
F
Fiberglass Top Replacement ............................... 8-157
Floor Mat
Repair
Floor Mat Replacement (Pickup Models)...... 8-128
Floor Mat Replacement (Tahoe/Suburban) .. 8-129
Frame and Underbody
Description
Frame and Underbody Description ............... 8-165
Repair
Front Winch Receiver Replacement ............. 8-163
Military Rear Receiver Hitch Replacement ... 8-163
Specifications
Fastener Tightening ...................................... 8-162
Front Drive Axle
Description
Front Axle Vent Tube Filter ............................. 4-11
Repair
Front Axle Vent Tube Filter Replacement....... 4-10
Front Suspension
Description
Front Shock Absorber ....................................... 3-6
Repair
Shock Absorber Replacement .......................... 3-4
Specifications
Fastener Tightening .......................................... 3-3
G
Government Vehicle Data Plate Replacement..... 8-130
H
Headlamp
Repair
Headlamp Bulb Replacement –
Blackout (B/O) ............................................. 8-76
Headlamp Replacement – Blackout (B/O) ...... 8-76
Horns
Description
Horn with Blackout (B/O) Control
Circuit Operation.......................................... 8-94
Diagnosis
Horns Inoperative............................................ 8-91
Horns Operate in Blackout (B/O) Mode .......... 8-93
Schematics ......................................................... 8-89
INDEX
3
I
Identification, Vehicle ................................................ 0-3
Instrument Panel, Gages and Console
Description
Instrument Panel and Gages Description........ 8-88
Repair
Blackout (B/O) Switch Replacement ............... 8-86
Voltmeter Replacement ................................... 8-85
Voltmeter, Blackout (B/O) Switch Panel
Replacement ................................................ 8-85
Specifications
Fastener Tightening......................................... 8-84
Interior Trim
Description
Interior Description......................................... 8-149
Repair
24 Voltmeter Relay Replacement
(Pickup Models) ......................................... 8-133
24 Voltmeter Relay Replacement
(Suburban) ................................................. 8-135
24 Voltmeter Relay Replacement (Tahoe) .... 8-134
Battery Equalizer Replacement (Suburban).. 8-145
Battery Equalizer Replacement (Tahoe) ....... 8-144
Battery Equalizer/Bracket Replacement
(Pickup Models) ......................................... 8-143
Contactor Replacement (Pickup Models) ...... 8-136
Contactor Replacement (Suburban).............. 8-138
Contactor Replacement (Tahoe) ................... 8-138
Floor Mat Replacement (Pickup Models) ...... 8-128
Floor Mat Replacement (Tahoe/Suburban)... 8-129
Government Vehicle Data Plate
Replacement .............................................. 8-130
Power Converter Replacement (Suburban) .. 8-142
Power Converter Replacement (Tahoe)........ 8-141
Power Converter/Bracket Replacement
(Pickup Models) ......................................... 8-140
Power Converter/Equalizer Bracket
Replacement (Suburban)........................... 8-147
Power Converter/Equalizer Bracket
Replacement (Tahoe) ................................ 8-146
Rear Compartment Side Trim Panel
Replacement (Tahoe/Suburban)................ 8-126
Weapons Mount Replacement –
Floor Mount ................................................ 8-132
Weapons Mount Replacement – Upper ........ 8-132
Weapons Support Replacement – Lower...... 8-131
Specifications
Fastener Tightening Specifications ............... 8-125
IP Compartment Lamp Replacement – Voltmeter .. 8-80
J
Equalizer ............................................................... 0-6
Owner/User’s Information ..................................... 0-6
Winch Warning Label............................................ 0-6
Lamp Harness Replacement – Rear ...................... 8-34
License Plate Bracket Replacement .................... 8-151
Lighting Systems
Components
Lighting Systems Component Views .............. 8-54
Lighting Systems Connector End Views ......... 8-63
Description
Backup Lamps Circuit of Operation ................ 8-81
Blackout (B/O) Lighting ................................... 8-81
Blackout (B/O) Lighting Circuit of Operation ... 8-81
Diagnosis
Backup Lamps Inoperative.............................. 8-68
Backup Lamps Operate in Blackout (B/O)
Mode............................................................ 8-73
Blackout (B/O) Headlamp Always On ............. 8-68
Blackout (B/O) Headlamp Inoperative ............ 8-66
Blackout (B/O) Marker Lamps Always On ...... 8-71
Blackout (B/O) Marker Lamps Inoperative...... 8-70
CTSY Lamps Operate in Blackout (B/O)
Mode............................................................ 8-74
DRL Operate in Blackout (B/O) Mode............. 8-72
Headlamps Operate in Blackout (B/O) Mode.. 8-68
Park Lamps Operate in Blackout (B/O) Mode. 8-73
Stoplamps Inoperative .................................... 8-70
Turn Signals Operate in Blackout (B/O) Mode 8-75
Repair
Headlamp Bulb Replacement –
Blackout (B/O) ............................................. 8-76
Headlamp Replacement – Blackout (B/O) ...... 8-76
IP Compartment Lamp Replacement –
Voltmeter ..................................................... 8-80
Marker Lamp Replacement – Front
Blackout (B/O) ............................................. 8-77
Marker Lamp Replacement – Rear
Blackout (B/O) ............................................. 8-78
Schematics ......................................................... 8-40
Specifications
Fastener Tightening Specifications................. 8-40
M
Maintenance
Owner Checks and Services ................................ 0-7
Periodic Maintenance Inspection.......................... 0-7
Marker Lamp
Repair
Marker Lamp Replacement – Front
Blackout (B/O) ............................................. 8-77
Marker Lamp Replacement – Rear
Blackout (B/O) ............................................. 8-78
Jump Starting in Case of Emergency ..................... 6-34
P
L
Paint/Coatings
Exterior and Interior Colors............................... 8-161
Pintle Hook
Repair
Label
24V Battery Caution Label .................................... 0-6
2001/02 LSSV Truck
4
INDEX
Pintle Hook Replacement .............................. 8-114
Power and Grounding
Component Views ............................................... 8-13
Components ........................................................ 8-13
Connector End Views.......................................... 8-25
Power Converter
Repair
Power Converter Replacement (Suburban) .. 8-142
Power Converter Replacement (Tahoe)........ 8-141
Power Converter/Bracket Replacement
(Pickup Models) ......................................... 8-140
Power Converter/Equalizer Bracket
Replacement (Tahoe) ................................ 8-146
Power Converter/Equalizer Bracket
Replacement (Suburban)........................... 8-147
R
Radiator
Repair
Radiator Grille Brush Guard Replacement .... 8-103
Radiator Grille Replacement ........................... 8-96
Rear Compartment Side Trim Panel
Replacement (Tahoe/Suburban)....................... 8-126
Rear Drive Axle
Description
Rear Axle Vent Tube Filter .............................. 4-13
Repair
Rear Axle Vent Tube Filter Replacement ........ 4-12
Rear Suspension
Description
Rear Shock Absorber ........................................ 3-9
Repair
Shock Absorber Replacement........................... 3-8
Specifications
Fastener Tightening........................................... 3-7
Relay Mounting Bracket Replacement ................... 8-37
S
Schematics
Engine Electrical.................................................... 6-3
Horns ................................................................... 8-89
Lighting Systems ................................................. 8-40
Wiring .................................................................... 8-3
Seats
Description
Troop Seats Description ................................ 8-124
Repair
Seat Replacement – Troop
(Pickup Models) ......................................... 8-123
Specifications
Fastener Tightening....................................... 8-122
Shock Absorber
Description
Front Shock Absorber Description..................... 3-6
Rear Shock Absorber Description ..................... 3-9
Repair
Shock Absorber Replacement
Front ............................................................... 3-4
2001/02 LSSV Truck
Rear ............................................................... 3-8
Slave Connector Replacement............................. 8-118
Special Tools
Wheel Drive Shafts ............................................... 4-9
Specifications
Fastener Tightening
Body Front End ............................................. 8-117
Body Rear End.............................................. 8-150
Bumpers .......................................................... 8-99
Engine Electrcial ............................................... 6-3
Exterior Trim.................................................... 8-95
Frame and Underbody .................................. 8-162
Front Suspension .............................................. 3-3
Instrument Panel, Gages and Console ........... 8-84
Interior Trim ................................................... 8-125
Lighting............................................................ 8-40
Rear Suspension............................................... 3-7
Seats ............................................................. 8-122
Wiring ................................................................ 8-3
Starting and Charging
Component Views................................................. 6-9
Connector End Views ......................................... 6-22
Description
Starting and Charging System Description
and Operation.............................................. 6-42
Stoplamps
Diagnosis
Stoplamps Inoperative .................................... 8-70
T
Tire
Hoist Shaft Extension Replacement ................... 3-10
Tires and Wheels
Description
Spare Wheel Hoist Shaft................................. 3-11
Repair
Tire Hoist Shaft Extension Replacement ........ 3-10
Trailer Wiring Harness Replacement ..................... 8-35
Transfer Case
Description
Transfer Case Vent Tube Filter....................... 4-15
Repair
Transmission/Transfer Case Vent Tube
Filter Replacement ...................................... 4-14
Transmission/Transfer Case Vent Tube Filter
Replacement....................................................... 4-14
V
Vehicle Identification ................................................ 0-3
Voltage Regulator Test........................................... 6-31
Voltmeter
Repair
Voltmeter Replacement................................... 8-85
Voltmeter, Blackout (B/O) Switch Panel
Replacement ............................................... 8-85
INDEX
5
W
Weapons Mount
Repair
Weapons Mount Replacement –
Floor Mount ................................................ 8-132
Weapons Mount Replacement – Upper ........ 8-132
Weapons Support Replacement – Lower ............. 8-131
Wheel Drive Shafts
Description
Wheel Drive Shaft Boot Covers......................... 4-8
Repair
Wheel Drive Shafts Boot Cover
Replacement .................................................. 4-3
Special Tools and Equipment ............................... 4-9
Winch
Repair
Connector/Harness Replacement
Front ............................................................. 8-36
Rear.............................................................. 8-37
Front Winch Receiver Replacement.............. 8-163
Winch Mount Replacement
(Pickup Models) ......................................... 8-118
Winch Replacement (Pickup Models)............ 8-119
Wiring
Components
Power and Grounding Component Views....... 8-13
Power and Grounding Components................ 8-13
Power and Grounding Connector
End Views.................................................... 8-25
Description .......................................................... 8-39
Repair
Auxiliary Lamp Extension Harness
Replacement – Rear.................................... 8-33
Auxiliary Lamp Harness Replacement –
Front ............................................................ 8-32
Lamp Harness Replacement – Rear............... 8-34
Relay Mounting Bracket Replacement............ 8-37
Trailer Wiring Harness Replacement .............. 8-35
Winch Connector/Harness Replacement
Front ............................................................ 8-36
Rear ............................................................. 8-37
Schematics ........................................................... 8-3
Specifications
Fastener Tightening .......................................... 8-3
2001/02 LSSV Truck
6
2001/02 LSSV Truck
INDEX

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