K271 Instructions

K271 Instructions
FORM #3260.04-110209
PRINTED IN U.S.A.
PAGE 1 OF 20
Superlift 4” to 6”lift system for 1988- Newer
GENERAL MOTORS FULL-SIZE ½ TON 4WD Trucks
With 6 Hole Wheels (up to 7300 lb. GVWR)
INSTALLATION INSTRUCTIONS
INTRODUCTION
Installation requires a professional mechanic. Prior to beginning, inspect the vehicles steering,
driveline, and brake systems, paying close attention to the suspension link arms and bushings,
anti-sway bars and bushings, tie rod ends, pitman arm, ball joints and wheel bearings. Also check
the steering sector-to-frame and all suspension-to-frame attaching points for stress cracks. The
overall vehicle must be in excellent working condition; repair or replace all worn parts.
Read instructions several times before starting. Be sure you have all needed parts and
know where they install. Read each step completely as you go.
NOTES:

Rear lift is performed first. The rear lift is sold separately and includes separate
installation instructions.

Speedometer reprogramming is necessary; refer to step 47. The device is sold separately
and includes separate installation instructions.

A special tool is required to load/unload the torsion bars (step 2). Other special tools are
recommended to detach/attach the pitman/idler studs. Refer to the factory service manual.

Front end realignment is necessary.

Exhaust modification is necessary, refer to step 50.

This system utilizes the stock torsion bars, which normally yield the best ride quality. But, if
the “final product” ride and handling seem too soft, heavier Gross Vehicle Weight Rating
(GVWR) bars can be installed. Generally, heavier torsion bars are only needed to
compensate for the extra weight of a winch or snowplow, or when the truck is subjected to
extreme off-road use. Also, wider tires and wheels proportionally increase the leverage on
the bars, which results in lower ride height and a “spongier” ride. GM offers torsion bars
with various rates that are heavier than stock. Your vehicle’s existing torsion bar rate can
be identified by a 3-letter code stamped into the bars’ ends. The code is also on an
adhesive tag wrapped around the bars.

An arrow on diagrams indicates which direction is toward the front of the vehicle.

A foot-pound torque reading is given in parenthesis ( ) after each appropriate fastener.

Do not fabricate any components to gain additional suspension height.

Prior to drilling or cutting, check behind the surface being worked on for any wires, lines, or
hoses that could be damaged.

After drilling, file smooth any burrs and sharp edges.
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PRINTED IN U.S.A.
PAGE 2 OF 20

Prior to operating a torch or saw, protect any heat-sensitive components located in the
immediate area by covering them with a water-saturated cloth. Most undercoating are
flammable but can be extinguished using a water-filled spray bottle. Have a spray bottle
and an ABC rated fire extinguisher on hand.

Paint or undercoat all exposed metal surfaces.

Prior to attaching components, be sure all mating surfaces are free of grit, grease,
undercoating, etc.

A factory service manual should be on hand for reference.

Use the check-off box “” found at each step to help you keep your place. Two “”
denotes that one check-off box is for the driver side and one is for the passenger side.
Unless otherwise noted, always start with the driver side.
PARTS LIST … The part number is stamped into each part or printed on an adhesive label.
Identify each part and place the appropriate mounting hardware with it.
PART NO
DESCRIPTION
NEW ATTACHING HARDWARE
(Qty.- if more than one)
(Qty.)
FOUND IN
HDWE. PACK
55-01-3260 ....... bracket, upper control arm’s .........(1) 9/16” x 3 ½” bolt ..................... 77-0001
front leg, driver side
(1) 9/16” Nyloc nut
(2) 1 7/8” sq. washer, 1/8” thick
(2) 7/16” x 1” bolt
(2) 7/16” Stover nut
(4) 5/8” ID, 1/16” thick shim ......... 77-0005
1998-1992 models only
(2) cam bolt.................................. 77-0008
55-02-3260 ....... bracket, upper control arm’s .........same as above ............................ 77-0001
front leg, passenger side
77-0005
77-0008
55-03-3205........ bracket, lower control arm’s .........(1) 5/8” x 4 ½” bolt ....................... 77-0005
front leg, driver side
(1) 5/8” Nyloc nut
(1) 7/16” x 1 ¼” bolt
(1) 7/16” Nyloc nut
(1) 7/16”, thick flat washer
55-04-3205........ bracket, lower control arm’s .........same as above ............................ 77-0005
front leg, passenger side
55-05-3205........ bracket, upper/lower control ........(2) 5/8” x 5 ½” bolt ....................... 77-0004
arm’s rear legs, driver side
(2) 5/8” Nyloc nut
(1) 9/16” x 3 ½” bolt
(1) 9/16” Nyloc nut
(2) 9/16” USS flat washer
(4) 5/8” ID, 1/16” thick shim ......... 77-0005
55-06-3205........ bracket, upper/lower control ........same as above ............................ 77-0004
arm’s rear legs, passenger side
77-0005
55-03-3260........ crossmember, differential front .....(2) 9/16” x 4” bolt ......................... 77-0002
(2) 9/16” Nyloc nut
55-04-3260........ crossmember, differential rear...... .................................................... included
FORM #3260.04-110209
PART NO
PRINTED IN U.S.A.
DESCRIPTION
NEW ATTACHING HARDWARE
(Qty.- if more than one)
(Qty.)
PAGE 3 OF 20
FOUND IN
HDWE. PACK
55-05-3260 ....... kicker brace, driver side ............... (1) 7/16” x 1 ¼” bolt ......................77-0002
(1) 7/16” Nyloc nut
(1) 7/16” flat washer
(2) 3/8” Nyloc nut
55-06-3260 ....... kicker brace, passenger side ....... same as above .............................77-0002
55-11-3205 ....... centerlink ..................................... (2) 12mm Stover nut Gd. 8.8 ........77-0005
(2) 14mm Stover nut Gd. 8.8
tube thread lock compound
55-01-3213 ....... crossmember, CSS ...................... (2) 9/16” x 1 ½” bolt ......................77-0003
(2) 9/16” Nyloc nut
55-03-3214 ....... stabilizer link, CSS driver side ..... (2) 9/16” x 3” bolt ..........................77-0003
(2) 9/16” Nyloc nut
(2) 9/16” USS flat washer
(4) half bushing
(2) sleeve
55-04-3214 ....... stabilizer link, CSS passenger ..... same as above .............................77-0003
side
55-12-3215 ....... skid plate...................................... (4) 7/16” x 1 ¼” bolt ......................77-0004
(4) 7/16” Stover nut
(8) 7/16”, thick flat washer
55-10-3260 ....... (2) front brake hose bracket ......... (1) 3/8” x 1” bolt ............................77-0025
(1) 3/8” Nyloc nut
(1) 3/8” SAE washer
(1) 5/16” x 3/4” bolt
(1) 5/16” SAE washer
(1) 5/16” Stover nut
differential vent hose extension ... 3 ½” long vent hose with coupler ..77-0005
extension travel limiting strap kit, . (2) #01-99265 strap ......................77-0021
rear axle
(2) ½” X 1” bolt
(2) ½” Nyloc nut
(2) ½”, thick flat washer
(2) cable tie
85113................ (2) shock absorber, front
85156................ (2) shock absorber, rear
FORM #3260.04-110209
PART NO
PRINTED IN U.S.A.
DESCRIPTION
NEW ATTACHING HARDWARE
(Qty.- if more than one)
(Qty.)
PAGE 4 OF 20
FOUND IN
HDWE. PACK
NOTE: Your application will include only the #55-10-3205 OR #55-10-3210, not both
55-10-3205............. bracket, 2 bolt idler arm .................... (2) 7/16” x 2 ¾” bolt
all 1988 through 1991 models,
(2) 7/16” Stover nut
some 1992 and 1993 models
(2) 7/16”, thick flat washer
OR
55-10-3210............. bracket, 3 bolt idler arm .................... (3) 7/16” x 2 ¾” bolt
some 1992 and 1993 models,
(3) 7/16” Stover nut
all 1994 and newer models
(3) 7/16”, thick flat washer
NOTE: Your application will include only the #55-07-3260 OR #55-01-3265, not both.
55-07-3260............. (2) bracket, torsion bar crossmember (2) 7/16” x 5 ½” bolt
All models except 1995 4-door
(4) 7/16” x 4” bolt
Yukon/Tahoe Short Wheel Base (6) 7/16” Stover nut
(12) 7/16”, thick flat washer
OR
55-01-3265............. (2) link, torsion bar crossmember ..... (2) 7/16” x 1 ½” bolt
1995 4-door Yukon/Tahoe
(2) 7/16” Nyloc nut
Short Wheel Base
(2) 7/16” flat washer
(2) 7/16” x 2 ¾” bolt
(2) 7/16” Stover nut
(2) 7/16”, thick flat washer
(2) support cable
(2) bushing half
(2) sleeve
FRONT PROCEDURE
1)

PREPARE VEHICLE...
Place vehicle in neutral. Raise front of vehicle with a jack and secure a jack stand beneath
each frame rail, behind the lower control arms. Ease the frame down onto the stands, place
transmission in low gear or “park”, and chock rear tires. Remove front tires.
2)
UNLOADING THE TORSION BARS…
WARNING: Be extremely careful when loading or unloading the torsion bars; there is a
tremendous amount of stored energy in the bars. Keep your hands and body clear of the
adjuster arm assembly and puller tool in case anything slips or breaks.
NOTE: For safe removal / installation of the adjuster arms, a special puller tool is required.
Because of the tremendous loads generated, a standard 2-jaw gear puller tool tends to bend
down te crossmember “lips”, where it attaches, and pops out of place. If not found locally,
this special puller tool is available from: Kent Moore Tool Group, Roseville, MI…
PH: (800) 345-2233, or (313) 774-9500…#J-22517-C.

[Diagram1] On either side, remove the torsion bar aligning screw. Apply light lubricating
grease to the puller threads and the puller shaft-to-adjuster arm contact point. Position puller
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PAGE 5 OF 20
and load adjuster arm so the adjuster nut can be removed from crossmember. With the bar
unloaded, slide it forward onto the lower control arm. If the bar seems lodged, use a
hammer and punch routed through the hole in the back of the crossmember to drive it
forward. When the bar shifts forward, the adjuster arm will fall free.
3)



TORSION BAR CROSSMEMBER…
All models except 1995 4-door Yukon: The crossmember connects to the frame with
three bolts per side. Remove and discard these bolts.
OR
1995 4-door Yukon: [Diagram 2] Remove the two stock crossmember-to-frame links. The
four link bolts will be reused.
On vehicles with stock exhaust, it may be necessary to
jack-up exhaust to allow clearance for crossmember
removal. With the crossmember out of the way, the
bars can be dislodged from the lower control arms and
removed. Mark the bars (front / rear end and driver /
passenger side) and keep them seperated because
they must be reinstalled on the same side and in the
same front / rear direction as they were removed.
Steps 4 through 8 are performed one side at a time.
Start at the driver side.
4)
BRAKE HOSE…
 At driver’s side front, use vise-grips, or a small C-clamp,
to pinch closed the rubber brake hose which runs from
caliper-to-frame. Detach hose from caliper. Plug, or
cover, the caliper opening to prevent contamination.
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PRINTED IN U.S.A.
PAGE 6 OF 20
5)
AXLE SHAFT…
 Remove the 6 bolts that attach CV axle
flange to differential.
6)
INNER TIE ROD…
 [Diagram 3] The stock centerlink is shown.
Using special puller tool (refer to factory
service manual), detach inner tie rod ends
from centerlink.
NOTE: Do not hammer on linkage or use a
pickle fork or wedge type tool to dislodge
because damage may occur.
7)
ANTI-SWAY BAR…
 Remove both anti-sway bar drop links, which connect bar body-to-lower control arms. the
link nuts, accessed through the bottom of the arms, are somewhat restricted. It may be
necessary to detach bar at frame first.
8)
CONTROL ARM / HUB ASEMBLY REMOVAL…
 Position a floor jack under the hub assembly. Remove upper and lower control assembly to
floor.
NOTE: Vehicles equipped with 4
wheel anti-lock brakes have a wiring
harness at each front wheel that runs
from the frame, along the control arm,
and down to the outer axle. Remove
mounting bolt, then unplug connector
as shown [Diagram 4]. A new
mounting hole is drilled in step 30.
Perform Steps 4 through 8 on
passenger side.
9)

DRIVESHAFT…
Detach front driveshaft at differential
and secure it out of the way.
10) SKID PLATE…

Remove differential skid plate (if so
equipped).
11) DIFFERENTIAL WIRING, HOSE…

Unplug differential wiring harness and vent hose.
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12) TRIM FRAME…

[Diagram 5] Place a jack under the differential. Remove the bolts (2 total) that attach the
rear of the differential to the lower control arm / differential mounts on the driver and
passenger sides. With the two front upper differential bolts still attached, raise the jack to
pivot the differential upward and out of the way. With a torch, trim off the driver side
mounting bracket shown as Section “A”. This allows the differential to be lowered.
13) REMOVE DIFFERENTIAL ASSEMBLY…

Now remove the reamaining bolts: 1 bolt: at top of differential on driver side.
1 bolt: upper axle mount-to-frame at passenger side.

Now lower assembly to the floor.
14) TRIM FRAME…

[Diagram 5] On both sides, use a torh to trim Section “B” from the stock lower control arm /
differential mount as shown (represented as dotted lines). This allows clearance for the
differential in the relocated
position.
15) TRAVEL STOPS…

[Diagram 6] On both sides, unbolt
the rubber compression travel
stops from their stock position.
These stops will be reused. With
a torch, carefully trim the steel,
frame mounted brackets from the
frame as shown. Care must be
taken to cut these brackets as
close to the frame as possible to
allow clearance for the Superlift
relocation hardware that is
installed later.

Grind clean all cutting slag from
the trimming performed in steps
12, 14, and 15, and lightly coat all
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bare metal surfaces with a spray-on rust inhibitor.
16) CENTERLINK REMOVAL…

Using special puller tool (refer to factory service manual), detach center link from pitman and
idler arm studs.
NOTE: Do not use a pickle fork or wedge type tool because seal or bushing damage may
occur. Also, do not hammer on pitman arm, shaft, or puller because damage to arm /
steering gear may result.
17) ANTI-SWAY BAR…

[Diagram 7] Detach antisway bar body from
frame. Reinstall with
ends inverted – or
switched – so that the bar
body steps down instead
of up. Tighten sway barto-frame bolts (12).
18) IDLER ARM SPACER…

[Diagram 8] The spacer
fits between the idler arm
and its frame mounting
point. The arm is accessed by partially removing the passenger side inner fender.
NOTE: On vehicles equipped with an airbag, the airbag sensor is lcated on the side of the
frame near the holes for the idler arm bolts.
USE CAUTION! If struck, the airbag may deploy or malfunction.
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PAGE 9 OF 20
For vehicles with the 3-bolt idler arm, #55-10-3210 bracket installs with three 7/16” x 2 ¾”
bolts, thick flat washers, and Stover nuts (LC 57).
NOTE: After hand tightening, nuts must be torqued in this sequence:
1) rear bottom
2) front
3) rear top
OR
For vehicles with the 2-bolt idler arm, #55-10-3205 bracket installs with two 7/16” x 2 ¾”
bolts, thick flat washers, and Stover nuts (LC 57).
19) BRACKETS: LOWER CONTROL ARM’S FRONT LEG, DRIVER SIDE, #55-03-3205
LOWER CONTROL ARM’S FRONT LEG, PASSENGER SIDE #55-04-3205
[Diagram 9] Each bracket attaches to the stock lower control arm’s front leg mount using the
stock bolt, pointing rearward.

Each bracket attaches to the frame’s front crossmember with the two bolts; one inboard and
one outboard. At the
inboard hole, drill a 15/32”
hole into the crossmember
and install a 7/16” x 1 ¼”
bolt, flat washer, and Nyloc
nut; position the flat washer
inside the crossmember
(37). At the outboard holes,
install the 9/16” X 1 ½” bolts
(pointing downward). These
outboard cossmember holes
exist on most, but not
vehicles. If drilling or
reaming is necessary, use a
19/32” drill bit. These bolts
also capture the Centerlink
Stabilizing System (CSS)
mount, so do not install nuts
yet.
20) CSS CROSSMEMBER
MOUNT, #55-01-3213

[Diagram 10] Mate the “01”
bracket onto the 9/16” x 1 ½”
bolts, installed in the previous
step. Be sure that the bracket
face, where the links will
ultimately attach, is angled
towards the centerlink, as
shown. Now install the 9/16”
Stover nuts (110). The CSS
liks are not attached until Step
22.
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PAGE 10 OF 20
21) SUPERLIFT CENTERLINK, #55-11-3205

[Diagram 8] Unless a special seating tool is used (refer to factory service manual), the new
pitman / idler arm-to-center link nuts (40) must be initially “snugged up” with an impact
wrench. This is necessary because, unless tightened rapidly, the locking nuts cause the
tapered studs to rotate in their sockets. Use the furnished 14mm lock nuts; the stock nuts
must not be reused.
22) CSS STABILIZER LINK, DRIVER SIDE, #55-03-3214
CSS STABILIZER LINK, PASSENGER SIDE, #55-04-3214

[Diagram 10] Coat the sleeves’ OD with a light, Lithium based grease. Insert link eye
bushings and sleeves into link eyes.

Position the centerlink, installed in Step 21, so that the tires (if they were on the vehicle)
would be pointing straight ahead.

Loosely connect the links to the CSS mount. Do not tighten the 9/16” x 3” bolts yet.

Connect the passenger side link-to-centerlink tab first. If the holes are misaligned, turn the
steering wheel in either direction until hole alignment is achieved. Then return the centerlink
to the centered position. Prior to tightening, be sure that the links are facing straight ahead
(parallel to the pitman and idler arms), and that their eye bushing flanges seat flush (no
gaps) against all mating surfaces. If gaps exist, slightly bend the tabs or bracket as
necessary to close the gaps. Torque all link eye bolts (65).

Re-torque all CSS hardware. Lubricate eye bushings via grease fittings.
23) STOCK UPPER CONTROL ARM HANGERS…

[Diagram 6] The hangers have slotted holes that allow them the control arms to be moved in
or out to achieve front end alignment by adjusting the eccentric cam bolts. On some models,
the slot must be opened-up by knocking-out a perforated plug. If the vehicle has been
aligned previously, odds are that
the plugs have already been
removed.
24) BRACKETS: UPPER
CONTROL ARM, FRONT LEG,
DRIVER SIDE, #55-01-3260
UPPER CONTROL ARM,
FRONT LEG, PASSENGER
SIDE, #55-02-3260
DIFFERENTIAL
CROSSMEMBER, FRONT, #5503-3260

[Diagram 11] With brackets
laying on the floor, loosely attach
the “01” and “02” bracket to the
“03” (front differential
crossmember) using 7/16” x 1 ¼”
bolts and hardware. Be sure to
have the attaching flanges of the
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PAGE 11 OF 20
crossmember to the front side of the “01” and “02” brackets. do not tighten the 7/16” bolts at
this time.

Position the 3-piece crossmember / bracket
assembly up to the frame as shown and align
the “01” and “02” brackets into the strock
upper control arm mounts. Connect the two
using 9/16” x 3 ½” bolts and Nyloc nuts with 1
7/8” square washers positioned on both sides
of the 9/16” bolts. The square washers are
used to center the bolts in their slotted holes.

Insert factory bolts through the
crossmember’s upper tabs where they mate
to the stock differential mounts. These will be
tightened later.
25) DIFFERENTIAL-TO-FRONT
CROSSMEMBER…

[Diagram 12] Raise the differential into
position with a floor jack. Insert two 9/16” x 4”
bolts into the differential-to-front crossmember
mounts; hand tighten only. This differential
mounting hardware is tightened later. Keep
the jack “loaded” into position. The
differential’s rear crossmember is installed in
Step 29.
Steps 26 through 28 are performed one
side at a time. Start at driver side.
26) BRACKET: UPPER / LOWER CONTROL
ARM’S REAR LEGS, DRIVER SIDE, #5505-3205
 [Diagram 11] Locate and check fit the
bracket. Now bolt the bracket-to-frame at the
stock lower control arm mounting point. Use
furnished 5/8” x 5 ½” bolt, pointing rearward.
Do not install Nyloc nut at this time. At the
top mounting point, with the slotted holes,
insert the furnished 9/16” x 3 ½” bolt and
Nyloc nut, pointing forward. Place the USS
flat washers behind te bolt head and nut.
Hand tighten only.
NOTE: There may be a clearance problem in
the area where the travel stop was cut from
the frame. If so, heat and dimple the frame
inward to gain the needed clearance.
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PAGE 12 OF 20
 At the bracket’s top mounting points, shimming is required; see next step.
27) SHIMMING BRACKETS…
 [Diagram 13] Due to manufacturing tolerances, there may be slight gaps between the
bracket and the stock upper control arm mounting ears. If gaps exist, bridge gaps with the
shims. Hradware Pack 77-0005 contains 16 thin shims. There should be enough shims to
cover all four of the Superlift bracket-to-stock upper control arms attaching points.
28) BUMP-STOP…
 [Diagram 14] In order to clear the shock
absorber, grind the front / outside corner of the
stock rubber compression travel bump-stop to
match the radius of its mounting pad on #55-053205. Then attach bump stop as shown.
Repeat steps 26 through 28 on the passenger
side.
29) DIFFERENTIAL CROSSMEMBER, REAR, #5504-3260

[Diagram 12] Reposition the jack to under the
rear end of the differential. Raise the jack to
rotate the differential upward as high as it will go.
Position the rear crossmember by mating it onto
the two 5/8” bolts protruding through the stock
rear control arm mounts as shown. Once the
crossmember is in place install the two 5/8” Nyloc
nuts; hand tighten only. Lower the jack and
differential until the rear attachment points align,
then install the original mounting bolts (112).
Steps 30 through 37 are performed one side at a time. Start at the driver side.
30) REHANGING CONTROL ARMS…
 With the control arm assembly on a floor jack, raise it into position. Install 5/8” x 5 ½” bolt
and Nyloc nut at the lower control arm / rear leg attaching point. This bolt points rearward
and will also capture the bottom hole of the diffrential’s rear crossmember.
 Use a 5/8” x 4 ½” bolt, pointing forward, to connect front leg of lower control arm.
 Now mate the upper control arm to the Superlift bracket with the factory eccentric cam bolts.
In applications with the two-bolt idler, the eccentric cam bolts are supplied. Be sure that the
anti-sway bar body is pivoted down so it is below the upper control arm’s front leg.
NOTE: 4-wheel anti-lock brakes [Diagram 4] – The wiring harness, disconnected in Step 8,
must be relocated lower on the frame.
 Drill one new hole as shown, and reconnect harness.
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31) AXLE SHAFTS…
 Attach CV axle flange-to-differential (LC 60).
32) TORQUE BOLTS IN THIS SEQUENCE…
1)  differential’s front crossmember-to-frame……………………… 2 bolts (112)
2)  diferential-to-front crossmember………………………………... 2 bolts (82)
3)  differential-to-rear crossmember………………………………... 2 bolts (82)
4)  rear crossmember’s top bolts-to”05” and “06” brackets……… 2 bolts (112)
5)  rear lower control arm legs-to-Superlift brackets………………2 bolts (112)
These bolts also capture the two bottom holes on the differential’s rear crossmember.
6)  front lower control arm legs-to-Superlift brackets…………….. 2 bolts (112)
7)  Superlift brackets-to-stock upper control arm mounts……….. 4 bolts (82)
8)  front crossmember-to-“01” and “02” brackets…………………. 4 bolts (57)
9)  cam bolts at upper control arm-to-Superlift brackets…………. 4 bolts (75-90)
NOTE: Before tightening, adjust cams to a neutral, or centered position.
 Check axle flange, centerlink, and diferential clearances.
33) SHOCK ABSORBER, FRONT, #85101
 Torque upper and lower bolts (48). Cycle suspension through full travel cycle and check for
adequate clearance between shock, bump stop, and brake hose.
34) BRAKE HOSE BRACKET…
 [Diagram 15] Locate the brake hose retainer on
the frame rail and diconnect the brake hose from
the clip.
 Remove the brake hose bracket from its
attachment point on top of the factory front upper
control arm leg mounting bracket.
 Position the short side (one hole) of the Superlift
brake hose bracket (SL# 55-10-3260) to the
bottom side of the factory upper control arm
mount and align so that it is parallel with the
center of the upper control arm. Secure the
bracket with the supplied 3/8” x 1” bolt, washer (at
bolt head), and Nyloc nut (30). Install the bolt from the top.
 Carefully re-form (straighten-out) the bends, as needed, to allow the factory brake line
bracket to mate with the Superlift bracket. DO NOT kink the line. Attach the factory brake
line bracket to the Superlift brake line bracket, align the bolt hole with the upper hole and the
tab with the lower hole. Secure with the supplied 5/16” x 3/4” bolt, washer (at bolt head), and
Stover nut (200 In. Lbs.). Install bolt from the top.
35) TIE ROD END, INNER…
 Attach inner tie rod end-to-centerlink with furnished 12mm Stover nut (40). Do not reuse the
stock nut. Unless a special seating tool is used (refer to factory service manual), the tie rod
end-to-centerlink must be initially “snugged up” with an impact wrench.
FORM #3260.04-110209
PRINTED IN U.S.A.
PAGE 14 OF 20
36) DIFFERENTIAL WIRING…

Reconnect differential’s electrical plug and
vent hose.
37) ANTI-SWAY BAR LINKS…
 Reinstall stock anti-sway bar drop links.
Tighten drop link bolts only until bushings
swell slightly.
Repeat steps 30 through 37 on passenger
side.
38) SKID PLATE, #55-12-3215

[Diagram 16] Skid plate attaches, as shown,
with stock bolts (57) at the front frame
crossmember and new 7/16” hardware (57) at
the stock skid plate attaching points. The
stock skid plate then bolts to the rear Superlift
crossmember with the supplied 7/16”
hardware (57). If vehicle is not equipped with factory skid plate, order GM Part #15538494
from your local GM dealer.
39) CLEARANCE CHECK…

With vehicle still on jack stands, and suspension “hanging” at full extension travel, cycle
steering lock-to-lock and check all components for proper operation / clearances. [Diagram
15] shows the work completed so far.
40) BRAKES…

Thoroughly bleed air from brake system, as per the GM Service Manual.
41) KICKER BRACE, DRIVER SIDE, #55-05-3260
KICKER BRACE, PASSENGER SIDE, #55-06-3260

Install the kicker brace at the rear Superlift crossmember using the supplied 5/16” Nyloc
nuts; do not tighten at this time. The rear of the brace is then attached to the existing holes
in the transmission crossmember with the supplied 7/16” hardware. Tighten the Superlift
crossmember end first (57), then the transmission crossmember end (57).
42) TORSION BARS / CROSSMEMBER…

Insert the front end of the torsion bars into the lower control arms. Be sure the bars are
positioned (front / rear end, driver / passenger side) in their original configuration. The rear
of the bar ends are now “hanging”.

This step is a 2-man operation. With the crossmember balanced on a floor jack, raise it to
mate with the hanging bar ends. Now locate the adjuster arms inside the crossmember and
onto the bar ends.
FORM #3260.04-110209
PRINTED IN U.S.A.
PAGE 15 OF 20
TORSION BAR CROSSMEMBER BRACKET, #55-07-3205

[Diagram 17] ALL MODELS EXCEPT 1995 4-DOOR YUKON: Lubricate adjuster bolt and
puller threads prior to installation. Position the two #55-07-3205 brackets in between the
bottom of the frame rails and top of the crossmember. Invert, as shown, the stamped steel
straps that cap the rubber insulators. Tighten the 7/16” x 5 ½” center bolts and Stover nuts
(18) then the outer edge 7/16” x 4” bolts (57). Bar loading sequence is the reverseof Step 2;
again, be careful. Tighten until arms are just clearing nut blocks.
OR
TORSION BAR CROSSMEMBER-TO-FRAME LINK, #55-01-3265

[Diagram 18] 1995 4-DOOR YUKON: Insert bushing halves and sleeves into each end of
the #55-01-3265 link. Attach the links to the crossmember with the factory bolts, but do not
fully tighten yet. Attach the crossmember to the links using the stock bolts pointing forward;
the nuts are not installed until the support cables are attached. The support cables have a
mounting bracket on each end. On the driver side, slip one of the cable’s mounting brackets
(either end will do) onto the bolt. Position the mounting bracket so it points towards the front
of the vehicle and is angled upwards. Now torque both bottom and top link bolts (82).

The other end of the cable mounts to the bottom side of the frame rail. Pull the cable tight,
locate the mounting bracket and mark the frame.

Measure back 3/8” to allow some cable slack, and drill a 15/32” hole for the new 7/16” x 1 ½”
bolt; torque to (41).

Install the cable on the passenger side.

Lubricate adjuster bolt and puller threads prior to installation. Bar loading sequence is the
reverse of Step 2; again, be careful. Tighten until arms are just clearing nut blocks.
43) TIRES / WHEELS...

Tighten the lug nuts to
factory specifications.
WARNING: When the
tires / wheels are
installed, always check
for and remove any
corrosion, dirt, or
foreign material on the
wheel mounting
surface, or anything
that contacts the wheel
mounting surface (hub,
rotor, etc.). Installing
wheels without the
proper metal-to-metal
contact at the wheel
mounting surfaces can
cause the lug nuts to loosen and the wheel to come off while the vehicle is in motion.
FORM #3260.04-110209
PRINTED IN U.S.A.
PAGE 16 OF 20
WARNING: Retighten lug nuts at 500 miles after any wheel change, or anytime the lug nuts
are loosened. Failure to do so could cause wheels to come off while vehicle is in motion.

Lower vehicle to the floor.
44) REAR LIFT...

The rear lift is purchased separately
and has separate instructions. Install
now.
45) ADJUSTING FRONT RIDE
HEIGHT...

Manually bounce the front and rear of
vehicle to normalize the torsion bars
and leaf springs.
 On each side, fully tighten the LCA-tocrossmember bolts (156).
 Position the vehicle on a level surface.
Measure from the LCA front pivot bolt
center down to the floor. Record this
as Measurement “A”.
 Now measure from the inside edge of
the knuckle (at the lower ball joint
boss) down to the floor. Record this as
Measurement “B”.
Subtract Measurement “B” from “A” for the ride height figure. Minimum ride height is 3.08”;
maximum is 5.0”. Ideal ride height is somewhere in between. Raise height by tightening the
torsion bar adjusting bolt; lower height by loosening the bolt. Adjust height 3/8” to 1/2” above
the final desired ride height, since the bars will settle slightly after the vehicle is driven.
NOTE: Exceeding the stated minimum or maximum heights will cause the suspension to
continually “top out” or “bottom out”. This results in a harsh ride, accelerated suspension
component wear, and possibly component failure.
46) FINAL CLEARANCE and TORQUE CHECK...
 With vehicle on floor, cycle steering lock-to-lock and inspect the tires / wheels, and the
steering, suspension, and brake systems for proper operation, tightness, and adequate
clearance.
 [Diagram 19] If stock wheels are being used (or wheels with the same or greater positive
offset), the distance between the tire side wall and the brake hose will be minimal and must
be checked closely. Normally, the hose and tire will be closest to making contact when the
tire / wheel is in a turn. Cycle the steering left-to-right full-lock. If at any point during the
turning cycle the tire and hose come within one inch or closer of each other, you must modify
these accordingly. To achieve desired clearance, first bend the hose’s metal leader (at the
FORM #3260.04-110209
PRINTED IN U.S.A.
caliper end) inboard slightly. If more
clearance is needed, locate the
mounting tab where the upper end of
the hose mates to the hard metal line,
and carefully bend the tab downward.
 Recheck brake hose fittings for leaks.
47) VEHICLE SPEED SENSOR…

When different height tires are
installed, the speedometer must be
recalibrated. Consult your Superlift
distributor or Superlift catalog for
appropriate reprogramming device.
The device is sold separately and
includes separate installation
instructions.
48) Activate four wheel drive system
and check front hubs for engagement
49) HEADLIGHTS...

Readjust headlights to proper setting.
50) FRONT DRIVESHAFT…
NOTE: Driveshaft will not clear
exhaust crossover pipe.

Reroute a new section of pipe above
shaft. If necessary, vehicle can be
driven to a muffler shop with the front
drive shaft completely removed.
Torque shaft-to-differential bolts (15); shaft-to-transfer case bolts (74).
51) REAR AXLE EXTENSION TRAVEL
LIMITING STRAPS and REAR SHOCK
ABSORBERS…
 [Diagram 20, DRIVER SIDE] Drill a 17/32”
diameter hole in the tower, as shown, for
the upper end of the limiting strap. Locate
this new hole ½” inboard of shock body
centerline, and 1” down from the tower’s
top plate.
 The strap’s upper end bolts to the inside of
the tower with a ½” x 1” bolt, thick washer,
and Nyloc nut. The bolt should face away
from the shock. Note that the strapmounting buckle has a slight offset; install
with offset facing away from the tower-
PAGE 17 OF 20
FORM #3260.04-110209
PRINTED IN U.S.A.
PAGE 18 OF 20
mating surface. Do not fully tighten the bolt; the buckle should be able to pivot slightly.
 Bolt the upper end of the new shock to the tower using the stock bolts (20). The lower end
of the limiting strap anchors to the shock mount at the axle via the stock shock bolt. The
strap buckle mates to the wheel (outside) side, with the buckle offset facing away from the
shock body. Torque the lower shock bolt (81).
 Pull the strap tight against the shock body so that all strap slack is above the body. Anchor
the strap to the shock body with another cable tie. This keeps the strap away from the tire /
wheel, exhaust, etc.

[Diagram 21, PASSENGER SIDE] As
per the diagram, the new hole in the
shock tower is in line with the shock
centerline, there is no offset. The
remainder of the installation is identical
to the driver side; refer to the steps
above.
52) SUPERLIFT NAME BADGE AND
WARNING DECAL...
The system includes one 2” x 5” name
badge (#0034). Additional and / or
larger badges are available from
Superlift or a Superlift dealer. We
suggest putting the badges on the front
fenders, tailgate, or rear window. The
badge mounts by means of factory
applied, double-backed tape. Follow these instructions to ensure that badge sticks properly:

Clean designated area with warm, soapy water. Rinse and wipe dry with a soft, lint free
towel.

Thoroughly prep the area with the furnished alcohol wipe pad and wipe dry with a soft, lint
free towel. Do not touch the surface again with your hands; they transfer body oils.

Remove mounting tape backing, line up badge, and press in place. Do not touch mounting
tape or allow tape to get dirty.

Press firmly on the badge face and hold a few seconds to seat mounting tape. A superior
adhesive bond forms over time. We recommend allowing 24 hours of cure time before
washing and waxing. The emblem itself can be cleaned with any glass cleaner.

Install the WARNING TO DRIVER decal on the inside of the windshield, or on the dash,
within driver’s view. Refer to the “NOTICE TO DEALER AND VEHICLE OWNER”
section below.
FORM #3260.04-110209
PRINTED IN U.S.A.
PAGE 19 OF 20
53) ALIGNMENT...
Realign vehicle to factory specifications. Record the ride height measurement at time of
alignment. If, in the future the torsion bars settle excessively, alignment can be restored by
adjusting-up the bars to their original ride height.
Limited Lifetime Warranty / Warnings
®
Your Superlift product is covered by the Limited Warranty explained below that gives you specific legal rights. This
®
®
limited warranty is the only warranty Superlift makes in connection with your product purchase. Superlift neither
assumes nor authorizes any retailer or other person or entity to assume for it any other obligation or liability in
connection with this product or limited warranty.
®
What is covered? Subject to the terms below, Superlift will repair or replace its products found defective in
materials or workmanship for so long as the original purchaser owns the vehicle on which the product was originally
®
®
installed. Your warrantor is LKI Enterprises, Inc. d/b/a Superlift Suspension Systems (“Superlift ”).
®
What is not covered? Your Superlift Limited Warranty does not cover products, parts or vehicles Superlift®
determines to have been damaged by or subjected to:
• Alteration, modification or failure to maintain.
• Normal wear and tear (bushings, tie-rod ends, etc.). Scratches or defects in product finishes
(powdercoating, plating, etc.),
• Damage to or resulting from vehicle’s electronic stability system, related components or other vehicle
systems.
• Racing or other vehicle competitions or contests. Accidents, impact by rocks, trees, obstacles or other
aspects of the environment.
• Theft, vandalism or other intentional damage.
Remedy Limited to Repair / Replacement. The exclusive remedy provided hereunder shall, upon Superlift’s
inspection and at Superlift’s option, be either repair or replacement of product or parts covered under this Limited
®
Warranty. Customers requesting warranty consideration should contact Superlift by phone (1-800-551-4955) to
obtain a Returned Goods Authorization number. All removal, shipping and installation costs are customer’s
responsibility.
®
If a replacement part is needed before the Superlift part in question can be returned, you must first purchase the
replacement part. Then, if the part in question is deemed warrantable, you will be credited / refunded.
Other Limitations - Exclusion of Damages - Your Rights Under State Law
®
®
• Neither Superlift nor your independent Superlift dealer are responsible for any time loss, rental costs,
or for any incidental, consequential or other damages you may have.
• This Limited Warranty gives you specific rights. You may also have other rights that vary from state to
state. For example, while all implied warranties are disclaimed herein, any implied warranty required by
law is limited to the terms of our Limited Lifetime Warranty as described above. Some states do not
allow limitations of how long an implied warranty lasts and / or do not allow the exclusion or limitation of
incidental or consequential damages, so the limitations and exclusions herein may not apply to you.
Important Product Use and Safety Information / Warnings
As a general rule, the taller a vehicle is, the easier it will roll over. Offset, as much as possible, what is lost in rollover
resistance by increasing tire track width. In other words, go “wide” as you go “tall”. Many sportsmen remove their
mud tires after hunting season and install ones more appropriate for street driving; always use as wide a tire and
wheel combination as feasible to enhance vehicle stability. We strongly recommend, because of rollover possibility,
that the vehicle be equipped with a functional roll bar and cage system. Seat belts and shoulder harnesses should be
worn at all times. Avoid situations where a side rollover may occur.
Generally, braking performance and capabilities are decreased when significantly larger / heavier tires and wheels are
used. Take this into consideration while driving. Also, changing axle gear ratios or using tires that are taller or shorter
than factory height will cause an erroneous speedometer reading. On vehicles equipped with an electronic
speedometer, the speed signal impacts other important functions as well. Speedometer recalibration for both
mechanical and electronic types is highly recommended.
FORM #3260.04-110209
PRINTED IN U.S.A.
PAGE 20 OF 20
Do not add, alter, or fabricate any factory or aftermarket parts to increase vehicle height over the intended height of
the Superlift product purchased. Mixing component brands is not recommended.
®
®
All Superlift material is copyrighted. All images found in this catalog and in any Superlift marketing forums are the
®
sole property of or licensed to Superlift . Any reproduction of said materials, in part or in whole, with out the express
®
®
written permission of Superlift is strictly forbidden. Superlift , Rockrunner™, Swamprunner™, Superide™, Superide
®
SS™ and SSR™, Black Diamond , XCL™, X2™ Super Trac™, Torque Max™, Torque Max SS™, eXtreme Ring™,
Rail Wrap™, Bullet Proof Brake Hose™, TruSpeed™, Frame Integrated Technology™, F.I.T. Series™ and Rock
™
®
®
Fink are registered trademarks of Superlift Suspension Systems. Superlift Suspension Systems is a Division of
Bret Lovett’s Lift Kits Incorporated.
SUPERLIFT SUSPENSION SYSTEMS
300 Huey Lenard Loop Rd.
West Monroe, Louisiana 71292
Phone: (318) 397-3000
Sales / Tech: 1-800-551-4955
FAX: (318) 397-3040
www.superlift.com
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