connector end views

2004 ACCESSORIES & EQUIPMENT Wiring Systems (Connector End Views) - Hummer H2

2004 ACCESSORIES & EQUIPMENT

Wiring Systems (Connector End Views) - Hummer H2

CONNECTOR END VIEWS

POWER AND GROUNDING CONNECTOR END VIEWS

Accessory Power Outlet Terminal Identification - Console

Connector Part Information

Pin

A

B

C

Wire Color

OG

-

BK z

12176446

z

3-Way F Metri-Pack 280 Series Flexlock (BK)

Circuit No.

1040

-

1050

Battery Positive Voltage

Not Used

Ground

Function

Accessory Power Outlet Terminal Identification - Left

2004 Hummer H2



Pin

A

B

C

Wire Color

OG

-

BK z

12176446

z


Circuit No.

3040

-

1050

Function


Not Used

Ground

Accessory Power Outlet Terminal Identification - Rear


Pin

A

B

Wire Color

OG

-

Helpmelearn

January-01-08 12:23:02 PM z

12176446

z


Circuit No.

Function

3040

-


Not Used

Page 2 © 2005 Mitchell Repair Information Company, LLC.

2004 Hummer H2


Ground C BK

Cigar Lighter Terminal Identification

1450


Pin

A

B

C

Wire Color

OG

-

BK z

12176445

z

3-Way F Metri-Pack 280 Series Flexlock (WH)

Circuit No.

Function

640

-

1050


Not Used

Ground

Splice Pack Terminal Identification SP410 (Indexing May Vary)


Pin Wire Color

Helpmelearn

January-01-08 12:23:02 PM z

12176491

z

6-Way F Metri-Pack 280 Splice Saver (BK)

Circuit No.

Function


A

B

C

D

E

F

2004 Hummer H2


-

BK

BK

BK

-

BK

Trailer Terminal Identification Connector

-

1450

1450

1450

-

1450

Not Used

Ground

Ground

Ground

Not Used

Ground


Pin

A

B

C

D

E

F

G

Wire Color

L-GN

BK

D-BU

D-GN

RD

BN

YE z

15354653

z

Circuit No.

1624

1750

7-Way F Metri-Pack 280 Sealed (BK)

Function

Trailer Backup Lamps Supply Voltage

Ground

47

1619

742

2109

1618

Trailer Auxiliary Supply Voltage

Trailer Right Rear Turn/Stop Lamp Supply Voltage


Trailer Park Lamps Supply Voltage

Trailer Left Rear Turn/Stop Lamp Supply Voltage

INLINE HARNESS CONNECTOR END VIEWS

C100 Terminal Identification I/P Harness to Engine Harness

Helpmelearn

January-01-08 12:23:02 PM Page 4 © 2005 Mitchell Repair Information Company, LLC.

2004 Hummer H2


Connector

Part

Information

Pin

A

B

C

Wire

Color

-

GY/BK

D-BU z

84

15326084

z

87

16-Way F GT 150 280 Sealed

4.0 5.8 (BK)

Circuit

No.

-

Function

Not Used

Cruise Control

Resume/Accel Switch Signal

Cruise Control Set/Coast

Switch Signal

Connector

Pin

A

B

C

Part

Information

Wire

Color

-

GY/BK

D-BU

D

D-

GN/WH

817 Vehicle Speed Signal

E

F

GY

-

397

-

Cruise Control On Switch

Signal

Not Used

G BN/WH 419 MIL Control

H GY/BK 1694 4WD Low Signal

J Not Used

121 Engine Speed Signal K WH

L-

N

-

P D-BU

R YE

S D-GN

-

204

710

Not Used


Class 2 Serial Data

1049 PCM Class 2 Serial Data z z

15326085

Circuit

No.

-

87

84

16-Way M GT 150 280 Sealed

4.0 5.8 (BK)

Function

Not Used

Cruise Control

Resume/Accel Switch Signal


Switch Signal

D

D-

GN/WH

817 Vehicle Speed Signal

E

F

GY

-

397

-


Signal

Not Used

G BN/WH 419 MIL Control

H GY/BK 1694 4WD Low Signal

J Not Used

121 Engine Speed Signal K

L-

N

WH

-

P D-BU

R YE

S D-GN

-

204

710

Not Used


Class 2 Serial Data

1049 PCM Class 2 Serial Data

C101 Terminal Identification I/P Harness to Chassis Harness

Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

z

15326660 Connector

Part

Information

z z

15326661

10-Way M GT 280 Sealed 5.8

(BK)

Circuit

No.

Function

A D-GN 2087

Longitudinal Accelerometer 5-

Volt Reference

A D-GN 2087

Longitudinal Accelerometer 5

Volt Reference

B OG 2340 Battery Positive Voltage B OG 2340 Battery Positive Voltage

C L-BU 1122 ABS/TCS Class 2 Serial Data C L-BU 1122 ABS/TCS Class 2 Serial Data

D

E

F

Wire

Color

-

OG

L-BU z

Circuit

No.

-

2554

2088

10-Way F GT 280 Sealed 5.8

(BK)

Function

Not Used

Traction Control Preference

Switch Indicator

Longitudinal Accelerometer

Low Reference

Pin

D

E

F

Wire

Color

-

OG

L-BU

-

2554

2088

Not Used


Switch Indicator


Low Reference

G D-BU 716


Rate Sensor Signal

H

J

K

BK

L-BU

-

1550 Ground

2206

-


Switch Signal

Not Used

G D-BU 716


Rate Sensor Signal

H

J

K

BK

L-BU

-

1550 Ground

2206

-


Switch Signal

Not Used

C102 Terminal Identification Chassis Harness to I/P Harness

Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

Wire

Color

z z

15373450

12-Way F GT 280 SLD (BK)

Circuit

No.

Function

Connector

Part

Information

Pin

Wire

Color

z z

15373444

12-Way M GT 280 SLD (BK)

Circuit

No.

Function

A

B-

C

RD

-

1553

-

Motor Control A

Not Used

A

B-

C

RD

-

1553

-

Motor Control A

Not Used

D BK/WH 1554 Encoder Low Reference D BK/WH 1554 Encoder Low Reference

E YE/BK 1558 Channel B Encoder - Signal E YE/BK 1558 Channel B Encoder - Signal

F

G

H

J RD/WH 1556 Channel C Encoder - Signal J RD/WH 1556 Channel C Encoder - Signal

K BN/WH 1555 Channel P Encoder - Signal K BN/WH 1555 Channel P Encoder - Signal

L

D-

BU/WH

1557 Channel A Encoder - Signal L

D-

BU/WH

1557 Channel A Encoder - Signal

M

BK

BK

-

L-GN

1725

Rear Differential Lock -

Low - Reference

1552 Motor Control B

Not Used

2659


High - Control

F

G

H

M

BK

BK

-

L-GN

1725


Low - Reference

1552 Motor Control B

Not Used

2659


High - Control

C103 Terminal Identification I/P Harness to Forward Lamp Harness

Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

A

B

D

E

Wire

Color

YE

GY

PU

z z

-

15326856

14-Way F GT 150 SLD 4.0 (BK)

Circuit

No.

354

349

C WH/BK 2611

2612

Connector

Part

Information

z

Function

Discriminating Sensor - Left -

Low Reference

Pin

A


Signal

B

Wire

Color

YE

GY

Discriminating Sensor - Right

- Signal


- Low Reference

Not Used

C

D

E

WH/BK

PU

-

2611

2612

-

15326861

z

14-Way M GT 150 SLD 4.0

(BK)

Circuit

No.

Function

354

349

Discriminating Sensor - Left

Low Reference

Discriminating Sensor - Left

Signal

Discriminating Sensor - Righ

- Signal

Discriminating Sensor - Righ

- Low Reference

Not Used

F

J

BK/WH 174

735

Low Washer Fluid Indicator

Signal

G

D-

GN/WH

636

Ambient Air Temperature

Sensor Signal - Mirror

H BK/WH 1704 Low Reference - Mirror

L-

GN/BK


Sensor Signal - HVAC

K

L

M

N

BN

D-

GN/WH

-

D-BU

718

266

-

227

Low Reference - HVAC

Rear Window Washer Pump

Supply Voltage

Not Used

Windshield Washer

Reversible Pump Ground

F

G

D-

GN/WH

636


Sensor Signal - Mirror

H BK/WH 1704 Low Reference - Mirror

J

K

L

M

N

BK/WH

L-

GN/BK

BN

D-

GN/WH

-

D-BU

174

735

718

266

-

227

Low Washer Fluid Indicator

Signal


Sensor Signal - HVAC

Low Reference - HVAC

Rear Window Washer Pump

Supply Voltage

Not Used

Windshield Washer

Reversible Pump Ground

Helpmelearn

January-01-08 12:23:02 PM

Windshield Washer

Page 8

Windshield Washer

© 2005 Mitchell Repair Information Company, LLC.

2004 Hummer H2


P RD 228 Reversible Pump Control P


RD 228 Reversible Pump Control

Connector

Part

Information

Pin

A

B

Wire

Color

D-GN

L-GN z

15326849

z

12-Way F GT 150 SLD 4.0

(BK)

Circuit

No.

Function

1619

24

Trailer Right Rear Turn/Stop

Lamp Supply Voltage

Backup Lamp Supply

Voltage

C

D

E

BN/WH

BN

BN

2609

2509

Right Rear Marker/License

Lamps Supply Voltage

Left Rear Marker/License


241 Ignition 3 Voltage

F

G

H

J

D-

BU/WH

OG

YE

WH

1126

4340 Battery Positive Voltage

1618

5520

SCM - Suspension Class 2

Serial Data

Trailer Left Rear Turn/Stop

Lamp Supply Voltage

Ride Height Active Indicator

Control

K L-BU 5521 Ride Height Switch Signal

L-

M

Not Used

Connector

Part

Information

Pin

A

B

Wire

Color

D-GN

L-GN z

15326854

z

12-Way M GT 150 SLD 4.0

(BK)

Circuit

No.

Function

1619

24

Trailer Right Rear Turn/Stop

Lamp Supply Voltage

Backup Lamp Supply

Voltage

C

D

E

BN/WH

BN

BN

2609

2509






F

G

H

J

D-

BU/WH

OG

YE

WH

1126


1618

5520


Serial Data

Trailer Left Rear Turn/Stop

Lamp Supply Voltage


Control

K L-BU

L-

M

-

5521 Ride Height Switch Signal

Not Used

Helpmelearn


2004 Hummer H2



Connector

Part

Information

Pin

Wire

Color

A D-BU z

12065172

z

1-Way F Metri-Pack 280 Series

Sealed (BK)

Circuit

No.

Function

Connector

Part

Information

Pin

Wire

Color

47

Trailer Auxiliary Supply

Voltage

A D-BU z

12065171

z

1-Way M Metri-Pack 280

Series Sealed (BK)

Circuit

No.

Function

47

Trailer Auxiliary Supply

Voltage

C106 Terminal Identification Chassis Harness to Engine Harness

Connector

Part

Information

z z

15373449

12-Way F GT 150 SLD 4.0

Helpmelearn

January-01-08 12:23:02 PM

Connector

Part

Information

Page 10 z z

15373443

12-Way M GT 150 SLD 4.0


2004 Hummer H2


F

G

H

J

K

L-

M

Pin

A-

B

C

Wire

Color

-

GY

D D-GN

E -

WH

-

PK

BK

PU

-

Circuit

No.

-

-

(BLU)

Not Used

Not Used

Function

474 5-Volt Reference

890

-

Fuel Tank Pressure Sensor

Signal

Not Used

1310

EVAP Canister Vent

Solenoid Control

Not Used


470 Low Reference

1589 Fuel Level Sensor Signal

Circuit

No.

(BLU)

Pin

A-

B

C

Wire

Color

Not Used

Function

D

E

F

G

H

GY

D-GN

-

WH

-

PK

474 5-Volt Reference

890

-

Fuel Tank Pressure Sensor

Signal

Not Used

1310

-

1339

EVAP Canister Vent

Solenoid Control

Not Used

Ignition 1 Voltage

J BK 470 Low Reference

K PU/WH 1589 Fuel Level Sensor Signal

L-

M

Not Used

C115 Terminal Identification Engine Harness to Knock Sensor Jumper Harness z

12052641

Connector Part

Information

z

2-Way F Metri-Pack 150

Series (BK)

Pin Wire Color Circuit No.

Function

A D-BU 496

Knock Sensor 1

Signal

B L-BU 1876

Knock Sensor 2

Signal z

12052647

Connector Part

Information

z


Series (BK)


Function

A D-BU 496

Knock Sensor 1

Signal

B L-BU 1876

Knock Sensor 2

Signal

Helpmelearn


2004 Hummer H2


C148 Terminal Identification Engine Harness to Odd Ignition Coil Harness

F

G

H

C

D

E

Connector Part

Information

z z

12047938


Series Sealed (LT GY)


A BK 550

B RD 2127

Function

Ground

IC 7 Control

D-GN

-

BN

L-BU

PU

PK

2125

-

2129

2123

2121

1039

IC 5 Control

Not Used

Low Reference

IC 3 Control

IC 1 Control

C

D

E

F

G

Ignition 1 Voltage H

Connector Part

Information

z z

15326169




A BK 550

B RD 2127

Function

Ground

IC 7 Control

D-GN

-

BN

L-BU

PU

PK

2125

-

2129

2123

2121

1039

IC 5 Control

Not Used

Low Reference

IC 3 Control

IC 1 Control

Ignition 1 Voltage

C158 Terminal Identification Engine Harness to Even Ignition Coil Harness

Helpmelearn


2004 Hummer H2


Connector Part

Information

z z

12047938




A BK 550

B RD/WH 2122

Function

Ground

IC 2 Control

F

G

H

C D-GN/WH

D -

E BN/WH

L-BU/WH

PU/WH

PK

2124

-

2130

2126

2128

1239

IC 4 Control

Not Used

Low Reference

IC 6 Control

IC 8 Control

C

D

E

F

G

Ignition 1 Voltage H

Connector Part

Information

z z

15326169




A BK 550

B RD 2122

Function

Ground

IC 2 Control

D-GN

-

BN

L-BU

PU

PK

2124

-

2130

2126

2128

1239

IC 4 Control

Not Used

Low Reference

IC 6 Control

IC 8 Control

Ignition 1 Voltage

C175 Terminal Identification Engine Harness to Transmission Harness

Helpmelearn


2004 Hummer H2


Connector

Pin

A

Part

Information

Wire

Color

L-GN z z

1222

12160493

20-Way F Micro-Pack 100 W

(GY)

Circuit

No.

Function

1-2 Shift Solenoid

B

C

YE/BK

RD/BK

1223

1228

2-3 Shift Solenoid Valve

Control

Pressure Control (PC)

Solenoid Valve High Control

PC Solenoid Valve Low

Control

D

L-

BU/WH

1229

E

F-K

PK

-


Not Used

L YE/BK 1227 TFT Sensor Signal

M BK 407 Low Reference

Connector

Part

Information

Pin

A

Wire

Color

L-GN z

12160782

z

20-Way M Micro-Pack 100 W

(GY)

Circuit

No.

Function

1222


Control

B

C

D

E

F-K

L

M

YE

PU

L-BU

RD

-

BN

GY

1223

1228

1229


Control

Pressure Control (PC)

Solenoid Valve High Control

PC Solenoid Valve Low

Control


Not Used

1227 TFT Sensor Signal

407 Low Reference

N

P

R

PK

RD

D-BU

1224

1226

1225

Transmission Fluid Pressure

Switch Signal A


Switch Signal C


Switch Signal B

N

P

R

PK

OG

D-BU

S WH 687


Control

S WH

T TN/BK 422 TCC Solenoid Valve Control T BK

U BN 418

TCC PWM Solenoid Valve

Control

U TN

1224

1226

1225

687

418


Switch Signal A


Switch Signal C


Switch Signal B


Control

422 TCC Solenoid Valve Control

TCC PWM Solenoid Valve

Control

Helpmelearn


2004 Hummer H2


V-

W

Not Used

V-

W

C200 Terminal Identification Body Harness to I/P Harness

Not Used

Connector

Part

Information

Pin

A

B

C

D

E

Wire

Color

BN

L-BU

D-BU

WH/BK

PU z z

Circuit

No.

2509

2114

2115

2611

2612

15336219

16-Way F GT 150 Series (BK)

Function



Left Turn Signal Lamps

Supply Voltage

Right Turn Signal Lamps

Supply Voltage


- Signal


- Low Reference

Connector

Part

Information

Pin

Wire

Color

A

B

C

D

E

BN

L-BU

D-BU

WH/BK

PU z z

No.

2509

2114

2115

2611

2612

15336224

16-Way M GT 150 Series (BK)

Circuit

Function



Left Turn Signal Lamps

Supply Voltage

Right Turn Signal Lamps

Supply Voltage


- Signal


- Low Reference

F

G

H

J

K

YE

GY

YE

OG

BN/WH

354

349


Low Reference


Signal


1740


(C69)

2609



F

G

H

J

K

YE

GY

YE

OG

BN/WH

354

349


Low Reference


Signal


1740


(C69)

2609

Right Rear Park Lamps

Supply Voltage

Helpmelearn


2004 Hummer H2


L

M

N

P

R

S

PK

TN/BK

BN

WH

GY

OG

353

371

2409

I/P Module Suppression

Indicator Control

I/P Module Disable Switch -

Signal

Interior Park Lamps Supply

Voltage

393

391

Rear Window Wiper Motor

Control

Rear Window Wiper Switch

Signal


L

M

N

P

R

S

PK

TN/BK

BN

WH

GY

OG

353

371

2409

I/P Module Suppression

Indicator Control

I/P Module Disable Switch -

Signal


Voltage

393

391


Control


Signal


C201 Terminal Identification I/P Harness to Body Harness

Connector

Part

Information

Connector

Part

Information

z

15336476

Pin

Wire

Color

z z

15336479

4-Way F Metri-Pack 280 (YE)

Circuit

No.

Function Pin

Wire

Color

z


Series (YE)

Circuit

No.

Function

A1

A2

D-GN

WH

348

347

Steering Wheel Module -

Low Control


High Control

A1

A2

D-GN

WH

348

347


Low Control


High Control

B1

D-

GN/WH

1404 I/P Module - Low Control B1

D-

GN/WH

1404 I/P Module - Low Control

B2 WH/BK 1403 I/P Module - High Control B2 WH/BK 1403 I/P Module - High Control

C202 Terminal Identification Steering Column Harness to I/P Harness

Helpmelearn


2004 Hummer H2


Connector Part

Information

Pin

A1

A2

A3

A4

Wire

Color

-

PK

-

PU z z

-

3

-

1358

15336852/15336853

20-Way and 32-Way F GT

150 Series (BK)

Circuit

No.

Function

Not Used

Ignition 1 Voltage

Not Used

DIC Switch Signal z

15336851

Connector Part

Information

Pin

A1

A2

A3

Wire

Color

-

PK

z

-

3

-

52-Way M GT 150 Series

(BK)

Circuit

No.

Function

Not Used

Ignition 1 Voltage

Not Used

A4

D-

GN/WH

1358 DIC Switch Signal

A5 BK/WH 1851 Ground

A6-

A7

Not Used

A5

A6-

A7

A8

A9

A10

B1

BK

-

PK

-

RD

GY/BK

1851

-

Ground

Not Used


Not Used

A8

A9

142 Battery Positive Voltage A10

87

Cruise Control

Resume/Accel Switch

Signal

B1

PK

-

RD

GY/BK

B2 YE

B3 BK/YE

B4-B5 -

1327 DIC Fuel Signal

28 Horn Relay Control

Not Used

B6

B7

B8

B9

BN/WH

GY

-

TN

230

478

-

Instrument Panel Lamps

Dimming Control

Windshield Wiper Switch

Signal 2

Not Used

1851 Ground

B2

B3

B4-B5

YE

BK

-


Not Used


87

Cruise Control

Resume/Accel Switch

Signal


28 Horn Relay Control

Not Used

B6

B7

B8

BN/WH

GY

-

230

478

-


Dimming Control


Signal 2

Not Used

B9 BK/WH 1851 Ground

Helpmelearn


2004 Hummer H2


B10

B11

B12

D-BU

YE

PK

84

1996

1796


Switch Signal

Remote Shift Selector

Signal

Steering Wheel Controls

Supply Voltage

B31

B32

L-GN

GY/WH

1011

397

Remote Radio Control

Signal


Signal

C1 RD/WH 342 Battery Positive Voltage

C2-C8

C9

C10

-

YE

-

-

5

-

Not Used

Crank Voltage

Not Used

B10

B11

B12

B31

B32

C1

C2-C8

C9

C10

D-BU

YE

D-BU

L-GN

GY

RD

-

YE

-

84

1996

1796


Switch Signal


Signal


Supply Voltage

B13

B14

B15

DIC Set/Reset Switch

Signal

Not Used

Windshield Washer

Switch Signal

B16

B17

B18

YE/BK

L-GN

BN

307

11

Headlamp Switch Flash to

Pass Signal

Headlamp Dimmer Switch

Signal


B19-

B23

B24

B25

B26

B27

B28

OG/BK

-

PK

-

D-

BU/WH

D-GN

D-BU

OG/BK

YE

1816

-

94

-

477

80

B13

B14

B15

OG

-

PK

894 DIC Toggle Switch Signal B26 D-BU

1835

1836

Not Used


High Signal

Key In Ignition Switch

Signal

Security System Sensor

Low Reference


Signal

B29 RD/WH 812 12-Volt Reference

B30 Not Used

B16

B17

B18

B19-

B23

B24

B25

YE

L-GN

BN

-

D-BU

L-GN

1816

-

94

307

11

41

-

DIC Set/Reset Switch

Signal

Not Used

Windshield Washer

Switch Signal

Headlamp Switch Flash to

Pass Signal

Headlamp Dimmer Switch

Signal

Ignition 3 Voltage

Not Used

477

80


High Signal

Key In Ignition Switch

Signal

894 DIC Toggle Switch Signal

B27

B28

BK

YE

1835

1836


Low Reference


Signal

B29 RD/WH 812 12-Volt Reference

B30 Not Used

1011

397


Signal


Signal


-

5

-

Not Used

Crank Voltage

Not Used

C203 Terminal Identification Steering Column Harness to I/P Harness

Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

Wire

Color

A BN

B BK z

12186991

z


(YE)

Circuit

No.

Function

Connector

Part

Information

Pin

Wire

Color

347


High Control

A WH

348


Low Control

B D-GN z

15358601

z


Series (YE)

Circuit

No.

Function

347


High Control

348


Low Control

C210 Terminal Identification Headliner Harness to I/P Harness

Connector

Helpmelearn

January-01-08 12:23:03 PM

Connector


2004 Hummer H2


Part

Information

z

15336205

Pin

Wire

Color

z

12-Way F GT Mixed (BK)

Circuit

No.

Function

A OG

B -

3840

-


Not Used

C D-BU 1353 RAP Supply Voltage

D GY 655

Cellular Microphone Signal (-

EXP)

E BARE 514 Ground (-EXP)

F BK 1050 Ground

G -

H

J

D-GN

L-

GN/BK

1488

1354

Not Used

Noise Reduction Microphone

Signal w/ Class 2 Amplifier


Supply Voltage w/ Class 2

Amplifier

K-

M

Not Used

Part

Information

z

15336209

Pin

Wire

Color

z

12-Way M GT Mixed (BK)

Circuit

No.

Function

A OG

B -

3840

-


Not Used

C D-BU 1353 RAP Supply Voltage

D GY 655

Cellular Microphone Signal (-

EXP)

E BARE 514 Ground (-EXP)

F BK 1050 Ground

G -

H

J

D-GN

L-

GN/BK

1488

1354

Not Used


Signal w/ Class 2 Amplifier


Supply Voltage w/ Class 2

Amplifier

K-

M

Not Used

C212 Terminal Identification Upfitter Off-Road Lamps Harness

Connector

Part

Information

z

12147503

z


Sealed (BK)

Helpmelearn

January-01-08 12:23:03 PM

Connector

Page 20

Part

Information

z

12147517

z

2-Way M Metri-Pack 280 Series

Sealed (BK)


2004 Hummer H2


Pin

A

Wire

Color

PU

B RD

Circuit

No.

34

122

Function

Roof Off - Road Lamps

Supply Voltage 2


Supply Voltage 1

Pin

A

B

Wire

Color

PU

RD

Circuit

No.

34

122

Function


Supply Voltage 2


Supply Voltage 1

C277 Terminal Identification Steering Column Harness to Steering Wheel Harness

E

F

Connector

Pin

A

B

C

D

G

Part

Information

Wire

Color

YE

D-BU

PU

OG/BK

PK

BN/WH

L-GN z

12047886

z


(BK)

Circuit

No.

Function


Connector

Part

Information

Pin

Wire

Color

A YE

894

1358

1816

1796

230

1011

DIC Toggle Switch Signal

(Trip)

DIC Switch Signal

(Personalization)

DIC Set/Reset Switch Signal

(Select)


Supply Voltage

Steering Wheel Lamps

Dimming Control


Signal

B

C

D

E

F

G

D-BU

D-GN

OG

WH

BN

L-GN

L-GN z z

894

230

12045688


(BK)

Circuit

No.

Function


1358

1816

1796

DIC Toggle Switch Signal

(Trip)

DIC Switch Signal

(Personalization)

DIC Set/Reset Switch Signal

(Select)


Supply Voltage

Steering Wheel Lamps

Dimming Control

1011 Remote Radio Control Signal

1011 Remote Radio Control Signal

Helpmelearn


2004 Hummer H2


H BK 1851 Ground H

C298 Terminal Identification Body Harness to I/P Harness

BK 1851 Ground

Connector

Part

Information

z z

15317325

22-Way F GT 150 280 (LT GY)

Pin

Wire

Color

GY/BK

Circuit

No.

2334

Function

Radio Mute Signal-w/o Class

2 Amplifier

Pin

Wire

Color

GY/BK

Circuit

No.

2334

Function

Radio Mute Signal-w/o Class

2 Amplifier

A1

L-

GN/BK

PU

1354

493


Supply Voltage-w/Class 2

Amplifier

Rear Seat Audio Enable

Signal-w/o Class 2 Amplifier

A1

L-

GN/BK

PU

1354

493


Supply Voltage-w/Class 2

Amplifier

Rear Seat Audio Enable

Signal-w/o Class 2 Amplifier

A2

D-GN 1488


Signal-w/Class 2 Amplifier

A2

D-GN 1488


Signal-w/Class 2 Amplifier

A3 TN 201 Left Front Speaker Output (+) A3 TN

A4 BK/WH 1851 Ground A4 BK/WH

201

1851

Left Front Speaker Output (+)

Ground

A5 -

A6 OG

A7

A8

WH

OG

Not Used


1304

Liftgate Door Lock Relay

Control


Connector

Part

Information

A5 -

A6 OG

A7

A8

WH

OG

z z

3040

15317322

22-Way M GT 150 280 (LT

GY)

Not Used


1304


Control


A9

A10

A11

L-GN

TN

D-GN

200

511

1947

Right Front Speaker Output

(+)

Left Front Low Level Audio

Signal (+)


Signal (-)

A9

A10

A11

L-GN

TN

D-GN

200

511

1947

Right Front Speaker Output

(+)


Signal (+)


Signal (-)

Helpmelearn


2004 Hummer H2


B1

D-

BU/WH

B2 D-BU

2218

Serial Communications

Circuit

314 Radio On Signal

B1

D-

BU/WH

B2 D-BU

2218

Serial Communications

Circuit

314 Radio On Signal

B3 GY

B4

L-

GN/BK

118 Left Front Speaker Output (-) B3 GY

1794

Left Subwoofer Speaker

Output (-)

B4

L-

GN/BK

B5

L-

BU/BK

315

Right Subwoofer Speaker

Output (-)

B6 BARE 2011 Drain Wire

B5

L-

BU/BK

118

1794

315

Left Front Speaker Output (-)


Output (-)


Output (-)

B6 BARE 2011 Drain Wire

B7

B8

B9

B10

D-GN

D-

BU/WH

D-GN

L-GN

B11 OG/BK

1795

346

117

512

1546


Output (+)


Output (+)

)

Right Front Speaker Output (-

B7

B8

B9

D-GN

D-

BU/WH

D-GN

1795

346

117

Right Front Low Level Audio

Signal (+)

B10 L-GN 512


Signal (-)

B11 OG/BK 1546


Output (+)


Output (+)

)

Right Front Speaker Output (-


Signal (+)


Signal (-)

C310 Terminal Identification Body Harness to Left Rear Door Harness

Connector

Part

Information

Pin

Wire

Color

z

12177259/12177260

z

7-Way F and 10-Way F Metri-

Pack GT 150 Series (BK)

Circuit

No.

Function

Connector

Part

Information

Pin

Wire

Color

z

12177258

z

17-Way M Metri-Pack

Connectors Mixed Series (NA)

Circuit

No.

Function

Helpmelearn


2004 Hummer H2


A

B

C

1185

1187

2265

Power Window Switch Left

Rear Up Relay Control


Rear Down Relay Control

Power Window Lockout Left

Rear Signal

D

E

F

-

BN/WH

BK

-

230

Not Used


Dimming Control

1150 Ground

G OG

H L-BU/BK


747

Left Rear Door Ajar Switch

Signal

J GY/BK 690

Courtesy Lamp Supply

Voltage

K

L

YE

YE

BN

BN

M BK

116 Left Rear Speaker Output (-)

116 Left Rear Speaker Output (-)

199 Left Rear Speaker Output (+)

199 Left Rear Speaker Output (+)

N

P

TN

GY

1150 Ground

294

Door Lock Actuator Unlock

Control

295

Door Lock Actuator Lock

Control

R-

T

WH

YE

L-BU

Not Used

K

L

M

N

P

R-

T

YE

BN

BK

TN

GY

-

A

B

C

WH

YE

L-BU

1185

1187

2265


Rear Up Relay Control


Rear Down Relay Control

Power Window Lockout Left

Rear Signal

D

E

F

-

BN/WH

BK

-

230

Not Used


Dimming Control

1150 Ground

G OG

H L-BU/BK


747

Left Rear Door Ajar Switch

Signal

J GY/BK 690


Voltage

116

199

Left Rear Speaker Output (-)

Left Rear Speaker Output (+)

1150 Ground

294

295

-


Control


Control

Not Used

C311 Terminal Identification Upfitter Off-Road Lamps Harness

Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

Wire

Color

A PU

B BK

C RD z

12015793

z


(BK)

Circuit

No.

Function

Connector

Pin

Part

Information

Wire

Color

34


Supply Voltage 2

1050 Ground

122


Supply Voltage 1

A

B

C

PU

BK

RD z

12010717

z


(BK)

Circuit

No.

Function

34


Supply Voltage 2

1050 Ground

122


Supply Voltage 1

C320 Terminal Identification Body Harness to Left Rear Seat Harness - Heated Seats

Connector

Part

Information

Pin

Wire

Color

A OG

B BK

C BN

D

E

F

BN

PK

BK/WH z

12064752

z


(BK)

Circuit

No.

Function


1150 Ground


1637

Left Rear Heated Seat Switch

Signal

1631

1638

Left Rear Heated Seat Low

Temperature Indicator Control

Left Rear Heated Seat High


Connector

Part

Information

Pin

Wire

Color

A OG

B BK

C BN

D

E

F

BN

PK

BK/WH z z

1631

1638

12064754


(BK)

Circuit

No.

Function


1150 Ground


1637


Signal


Temperature Indicator Contro


Temperature Indicator Contro

Helpmelearn


2004 Hummer H2


C325 Terminal Identification Body Harness to Driver Seat Harness

L

M-

R

S

Connector

Part

Information

Pin

A

B

K

Wire

Color

OG

PK

GY

PK z z

15305133

16-Way F GT 150 280 (BK)

Circuit

No.

Function


2480

Passenger Heated Seat

Cushion Element Control

C

D

-

BN/WH

-

1048

Not Used

SCM (Seat) Class 2 Serial

Data

E BK/WH 238 Seat Belt Switch - Left

F -

G

H

J

L-BU

D-BU

D-BU

2433

2479

1363

Not Used

Passenger Heated Seat Back

Element Control


Element Supply Voltage

Seat Belt Switch - Left - Low

Reference

2434


Temperature Sensor Signal

2435 Low Reference

-

BK

-

1150

Not Used

Ground

Connector

Part

Information

z z

15305132

16-Way M GT 150 280 (BK)

Pin

Wire

Color

A OG

B PK/BK

Circuit

No.

Function


2480


Cushion Element Control

C

D

E

F

G

H

J

K

-

BN

BK

-

L-BU

D-BU

YE

-

1048

Not Used


Data

238 Seat Belt Switch - Left

-

2433

2479

1363

Not Used


Element Control


Element Supply Voltage

Seat Belt Switch - Left - Low

Reference

L L-BU 2435 Low Reference

M-

R

S

D-

BU/YE

-

BK

2434

-

1150


Temperature Sensor Signal

Not Used

Ground

C326 Terminal Identification Driver Seat Harness

Helpmelearn


2004 Hummer H2


Connector

Information

Pin

1

2

3-5

Part

Wire

Color

BK z z

7283-5625-40

13-Way F Yazaki Hybrid (LT

GY)

Circuit

No.

Function

6

7

8

D-BU

D-BU

OG

PU

2479

2479


Element Supply Voltage - w/KA7




1258

Driver Seat Torso Bolster Out

Control

9

10

11

D-BU

-

YE

-

PK

1150 Ground

611

-

Driver Seat Lumbar Motor

Forward Control

Not Used

1257

-

610

Driver Seat Torso Bolster In

Control

Not Used


Rearward Control

Connector

Information

Pin

1

2

3-5

6

7

8

9

10

11

Part

Wire

Color

BK

D-BU

-

D-BU

OG

PU

YE

-

PK z z

Circuit

No.

1150

611

-

2479

7282-5625-40

13-Way M Yazaki Hybrid (LT

GY)

Ground

Not Used w/KA7

Function


Forward Control


Element Supply Voltage -


1258

1257

-

610


Control


Control

Not Used


Rearward Control

12

13

PK/BK

L-BU

2480

2433


Cushion Element Control - w/KA7


Element Control - w/KA7

12

13

PK/BK

L-BU

2480

2433


Cushion Element Control - w/KA7



Helpmelearn


2004 Hummer H2



Connector

Part

Information

Pin

1

Wire

Color

WH z z

6098-1374

24-Way F (L-BU)

Circuit

No.

Function

5287 Voltage Reference

2 L-BU 2435 Low Reference - w/KA7

3 YE/BK 1063

Driver Seat Lumbar

Horizontal Position Sensor

Signal

4

5

PU

-

5700

-

Driver Seat Torso Bolster

Position Sensor Signal

Not Used

6 BN/WH 5288 Low Reference

7 OG 1540 Battery Positive Voltage

8 BN/WH 1048


Data

9

10

11

12

D-GN

D-BU

GY/BK

D-

GN/WH

1518

1520

1269

1270

Power Seat Front Vertical Up

Switch Signal

Power Seat Front Vertical

Down Switch Signal

Power Seat Recline Forward

Switch Signal

Power Seat Recline

Rearward Switch Signal

13

14

15

L-GN

TN

YE

1523

1522

2407

Power Seat Horizontal


Power Seat Horizontal

Forward Switch Signal


Forward Switch Signal

Pin

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Connector

Part

Information

Wire Color

WH

L-BU

YE/BK

PU

-

BN/WH

OG

BN

D-GN

D-BU

GY/BK

D-GN/WH

L-GN

TN/BK

YE

Circuit

No.

5287

2435

1063

5700

Voltage R

Low Ref

Driver Se

Sensor Si

Not Used -

5288 Low Ref

1540 Battery P

1048

1518

1520

1269

1270

1523

1522

2407

Driver Se

Position

SCM (Se

Power Se

Signal

Power Se

Switch S

Power Se

Signal

Power Se

Signal

Power Se

Switch S

Power Se

Switch S

Driver Se

Switch S

16 TN 2408

Helpmelearn

January-01-08 12:23:03 PM


Page 28

16 TN 2408

Driver Se


17-

18

20

21

23

24

-

2004 Hummer H2


-

19 L-BU 1521

YE/BU

WH/RD

D-

BU/WH

-

1519

5701

22 GY/RD 5702

2435

-


Not Used

Power Seat Rear Vertical

Down Switch Signal

Power Seat Rear Vertical Up

Switch Signal


Switch Signal


Out Switch Signal


Temperature Signal - w/KA7

Not Used


17-18

19

20

20

22

23

24

L-BU

YE/BU

WH/RD

GY/RD

D-BU/YE

-

-

1521

1519

5701

5702

2435

-

Switch S

Not Used

Power Se

Switch S

Power Se

Signal

Driver Se

Signal

Driver Se

Signal

Passenge

Tempera

Not Used

Connector

Part

Information

Pin

A

B

C

D

Wire

Color

D-BU

RD

BK

D-BU

E RD z

12064769

z


(WH)

Circuit

No.

Function

Connector

Part

Information

Pin

Wire

Color

569

Horizontal Seat Motor



A

B

D-GN

WH

5288 Low Reference

557

Front Vertical Seat Motor


5287 Voltage Reference z z

569

12064770


Series (WH)

Circuit

No.

Function

Horizontal Seat Motor



C BN/WH 5288 Low Reference

D

E

BN/WH

WH

557

Front Vertical Seat Motor



Helpmelearn


2004 Hummer H2


F

G

K

BK

D-BU

H RD

J BK

-

5288 Low Reference

568

Rear Vertical Seat Motor



5288 Low Reference

Not Used


F BN/WH 5288 Low Reference

G TN 568

Rear Vertical Seat Motor


H WH 5287 Voltage Reference

J BN/WH 5288 Low Reference

K Not Used

Connector

Part

Information

Pin

Wire

Color

A

B

C

D

E

F

BK

RD

BK

RD

BK

RD z

12064752

z


(BK)

Circuit

No.

Function

283

Driver Seat Rear Vertical

Motor Down Control

282

285

284

287

286


Motor Up Control

Driver Seat Horizontal Motor

Forward Control


Rearward Control

Driver Seat Front Vertical

Motor Down Control


Motor Up Control

Connector

Part

Information

Pin

A

B

C

D

E

F

Wire

Color

L-BU

YE

TN

L-GN

D-BU

D-GN z

12064754

z


(BK)

Circuit

No.

Function

283


Motor Down Control

282

285

284

287

286


Motor Up Control


Forward Control


Rearward Control


Motor Down Control


Motor Up Control

C330 Terminal Identification Driver Seat Harness - Heated Seats

Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

A

B

C

D

E

F

Wire

Color

BN

BK/RD

YE

BK

BK/RD

BK z

12064762

z


(GY)

Circuit

No.

Function

2077

Heated Seat Cushion Element

Supply Voltage - w/KA7

2425

2432

2424

2426

2078

Driver Heated Seat Back

Temperature Sensor Signal - w/KA7






Temperature Sensor Low

Reference - w/KA7


Control - w/KA7

Connector

Part

Information

Pin

A

Wire

Color

RD/WH z

12064763

z


(GY)

Circuit

No.

Function

2077



B

C

D

E

F

D-BU

BN

PU

PK

L-GN

2425

2432

2424

2426

2078


Temperature Sensor Signal - w/KA7






Temperature Sensor Low

Reference - w/KA7


Control - w/KA7


Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

A

B

C

Wire

Color

PU/WH

L-BU

BN

BN z

611

1063

12064998

z


(BK)

Circuit

No.

Function


Forward Control

Driver Seat Lumbar


Signal



Connector

Part

Information

Pin

A

B

C

Wire

Color

D-BU

YE/BK

WH z z

8-Way M Metri-Pack 280 Serie

(BK)

Circuit

No.

Function

611

1063

5287

15358651


Forward Control

Driver Seat Lumbar


Signal

Voltage Reference

D

E

TN/WH

PK/BK

1258

1257


Control

D


Control

E

PU

YE

1258

1257

Driver Seat Torso Bolster Ou

Control


Control

F

D-

BU/WH

D-

BU/WH

5288

5288

Low Reference

Low Reference

F BN/WH 5288 Low Reference

G

H

PU/WH

D-

BU/WH

5700

610




Rearward Control

G

H

PU

PK

5700

610




Rearward Control

C350 Terminal Identification I/P Harness to Console Harness

Helpmelearn


2004 Hummer H2


Connector Part

Information

Pin

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

B1

B2

Wire

Color

BN/WH

L-

GN/BK

OG

OG

-

BK

-

D-

GN/WH

D-BU

L-BU

BN

PK

D-

GN/WH z z

Circuit

No.

230

584

Park Lock Control

Solenoid Supply Voltage


1040

15317325

22-Way F GT 150 280 (L-

GY)

Function


Dimming Control


Not Used

1050 Ground

-

1547

546

Not Used

Left Rear Low Level

Audio Signal (-)

Right Rear Low Level

Audio Signal (+)

Connector

Part

Information

z z

15317322

22-Way M GT 150 280 (L-GY

Pin

A1

A2

A3

Wire

Color

BN/WH

L-

GN/BK

OG

Circuit

No.

230

Function


Dimming Control

584

Park Lock Control Solenoid

Supply Voltage


A4

A5

A6

A7

A8

A9

OG

OG

-

BK

-

D-

GN/WH

D-BU

1040

1040

Battery Positive Voltage -

Accessory Power Outlet -

Console - Left

Battery Positive Voltage -

Accessory Power Outlet -

Console - Right

Not Used

1050 Ground

-

1547

546

Not Used

Left Rear Low Level Audio

Signal (-)

Right Rear Low Level Audio

Signal (+)

2288 LGM Class 2 Serial Data A10 L-BU 2288 LGM Class 2 Serial Data

599

Left Rear Low Level

Audio Signal (+)


A11

B1

BN

PK

599

1020


Signal (+)

Ignition 0 Voltage

1135

A/T Shift Lock Control


B2

D-

GN/WH

1135

A/T Shift Lock Control



Helpmelearn


2004 Hummer H2


B3

B4-

B5

B11

YE

-

-

1996

-

2099

Signal

Not Used


B7 Not Used

B8 BK 1946

Right Rear Low Level

Audio Signal (-)

B9-

B10

Not Used

Drain Wire w/o Class 2

Amplifier

B3

B4-

B5

B11

YE

-

-

1996

-

2099

Remote Shift Selector Signa

Not Used


B7 Not Used

B8 BK 1946


Signal (-)

B9-

B10

Not Used

Drain Wire w/o Class 2

Amplifier

C355 Terminal Identification Body Harness to Console Harness - Heated Seats w/Class 2 Amplifier

Connector

Part

Information

Pin

A

Wire

Color

B BK/WH 1635

C

D-

E

BN

PK

z z

15332145

8-Way F GT 150 (BK)

Circuit

No.

1634

1636

-

Connector

Part

Information

z z

15332150

8-Way M GT 150 (BK)

Function

Right Rear Heated Seat

Switch Signal - w/KA7

Right Rear Heated Seat High


- w/KA7

Right Rear Heated Seat Low


- w/KA7

Pin

A

B

C

Wire

Color

BN

BK/WH

PK

Circuit

No.

1634

1635

1636

Not Used

D-

E

-





- w/KA7



- w/KA7

Not Used

Function

Helpmelearn


2004 Hummer H2


F

H

PK

BN

1631

G BK/WH 1638

1637






Signal

F PK

H BN

1631

G BK/WH 1638

1637






Signal

C355 Terminal Identification Body Harness to Console Harness - Heated Seats w/o Class 2 Amplifier

Connector

Part

Information

Pin

A

B

Wire

Color

BN

BK/WH z z

Circuit

No.

1634

1635

15326110

12-Way F GT 280 (BK)

Function





- w/KA7

Connector

Part

Information

Pin

Wire

Color

A

B

BN

BK/WH z z

No.

1634

1635

15332150

12-Way M GT 280 (BK)

Circuit

Function





- w/KA7

C

D

E

F

PK

BN

D-

GN/WH

D-BU

1636

599

1547

546



- w/KA7


Signal (+)


Signal (-)


Signal (+)

C PK

D BN

E

F

D-

GN/WH

D-BU

1636

599

1547

546



- w/KA7


Signal (+)


Signal (-)


Signal (+)

Helpmelearn

Right Rear Low Level Audio Right Rear Low Level Audio


2004 Hummer H2


G BK

H

J

K

L

M

BARE

PK

BK/WH

BN

-

1946

2099

1631

1638

1637

-

Signal (-)

Drain Wire



- w/KA7



- w/KA7


Signal - w/KA7

Not Used

G BK 1946 Signal (-)

H BARE 2099 Drain Wire

J

K

L

M

PK

BK/WH

BN

-

1631

1638

1637

-



- w/KA7



- w/KA7


Signal - w/KA7

Not Used

C375 Terminal Identification Body Harness to Passenger Seat Harness

Connector

Part

Information

Pin

Wire

Color

G

H

GY

D-BU z z

2434

2479

15305133

16-Way F GT 150 280 (BK)

Circuit

No.

Function

A

B

C

OG

PK

L-BU


2480


Control - w/KA7

2433



D-

F

Not Used



Passenger Heated Seat Element

Connector

Part

Information

Pin

Wire

Color

z z

15305132

16-Way M GT 150 280 (BK)

Circuit

No.

Function

A

B

C

OG

PK

L-BU


2480


Control - w/KA7

2433



D-

F

Not Used

G

H

D-BU

D-BU

2434

2479



Passenger Heated Seat Elemen


Helpmelearn


2004 Hummer H2


-


Not Used

2435 Low Reference - w/KA7

1250 Ground

D-BU 2479

J-P -

R PK

S BK




Not Used J-P -

R L-BU 2435 Low Reference - w/KA7

S BK 1250 Ground

Connector

Part

Information

Pin

Wire

Color

A

B

C

D

E

F

BK

RD

BK

RD

BK

RD z

12064752

z


(BK)

Circuit

No.

Function

289

288

Passenger Seat Rear Vertical

Motor Down Control


Motor Up Control

290

Passenger Seat Horizontal

Motor Rearward Control

296

298

297


Motor Forward Control

Passenger Seat Front Vertical

Motor Down Control


Motor Up Control

Connector

Part

Information

Pin

A

B

C

D

E

F

Wire

Color

L-BU

YE

L-GN

TN

D-BU

D-GN z

12064754

z


(BK)

Circuit

No.

Function

289

288


Motor Down Control


Motor Up Control

290


Motor Rearward Control

296

298

297


Motor Forward Control


Motor Down Control


Motor Up Control

C377 Terminal Identification Body Harness to Passenger Seat Harness (Heated Seats)

Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

A

Wire

Color

z

12064762

B

C

BK

YE

2434

2479





D BK 2424



E BK/RD 2435 Low Reference - w/KA7

F

BN

BK z


(GY)

Circuit

No.

Function

2479



2480


Control - w/KA7

Connector

Part

Information

Pin

A

B

C

D

F

Wire

Color

D-BU

D-BU

D-BU

L-BU z z

Circuit

No.

2479

2434

2479

12064763


(GY)

Function







E L-BU 2435 Low Reference - w/KA7

PK

2424

2480




Control - w/KA7


Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

Wire

Color

A

B

C

D

D-BU

WH

OG

PK z

12129136

z


(BK)

Circuit

No.

211

210

2462

Function

Passenger Seat Lumbar Motor

Forward Control


Rearward Control

Passenger Seat Bolster Motor

Forward Control

Connector

Part

Information

Pin

A

B

C

Wire

Color

D-BU

WH

D-BU z z

No.

211

210

12129135


(BK)

Circuit

2462

Function


Forward Control


Rearward Control


Forward Control

2427


Rearward Control

D L-BU 2427


Rearward Control

C380 Terminal Identification Body Harness to Right Rear Seat Harness - Heated Seats

Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

Wire

Color

A OG

B BK

C BN z z

Circuit

No.

4540

1150

12064752


(BK)

Ground

Function


D

E

F

BN

PK

BK/WH


1634



1631


Indicator Control - w/KA7

1638



Connector

Part

Information

Pin

A

B

C

D

E

F

Wire

Color

OG

BK

BN

BN/WH

PK

BK/WH z z

1638

12064754

6-Way M Metri-Pack 280 Serie

(BK)

Circuit

No.

Function


1150 Ground


1634

1631







C390 Terminal Identification Body Harness to Right Rear Door Harness

Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

A

B

Wire

Color

GY/BK

D-GN z

1186

1188

12177259/12177260

z

10-Way F and 17-Way F Metri-

Pack GT 150 Series (BK)

Circuit

No.

Function

Power Window Switch Right

Rear Up Control


Rear Down Control

Connector

Pin

A

B

Part

Information

Wire

Color

GY/BK

D-GN z z

No.

1186

1188

12177258

17-Way M Metri-Pack

Connectors Mixed Series (WH)

Circuit

Function


Rear Up Control


Rear Down Control

C L-GN 2266

Power Window Lockout

Right Rear Signal

D

E

F

-

BN/WH

BK

-

230

Not Used


Dimming Control

1250 Ground

C L-GN 2266

Power Window Lockout

Right Rear Signal

D

E

F

-

BN/WH

BK

-

230

Not Used


Dimming Control

1250 Ground

G OG

H L-GN/BK


748

Right Rear Door Ajar Switch

Signal

J GY/BK 690


Voltage

K

L

L-BU

L-BU

D-BU

115

115

46

)

Right Rear Speaker Output (-

)


Right Rear Speaker Output

(+)

G OG

H L-GN/BK


748

Right Rear Door Ajar Switch

Signal

J GY/BK 690


Voltage

K

L

L-BU

D-BU

115

46

)



(+)

Helpmelearn


2004 Hummer H2


M

N

P

R-

T

D-BU

BK

TN

GY

-

46


(+)

1250 Ground

294

295


Control


Control

M BK

N

P

TN

GY

Not Used

R-

T

-

1250 Ground

294

295


Control


Control

Not Used

C420 Terminal Identification Body Harness to Lift Gate Jumper Harness

Connector

Part

Information

Pin

Wire

Color

A PK/BK

B BK

C L-BU

D

E

F

G

BN

GY

TN

BN z z

15355586

12-Way F GT 280 (MD GY)

Connector

Part

Information

Circuit

No.

Function Pin

Wire

Color

1303 Liftgate Ajar Switch Signal A PK/BK

1450 Ground

1620

Trailer CHMSL Supply

Voltage

2409

295

294

2509


Voltage


Control

B

C

D

E

BK

L-BU

BN

GY z z

15326018

12-Way M GT 280 (MD GY)

Circuit

No.

Function

1303 Liftgate Ajar Switch Signal

1450 Ground

1620

Trailer CHMSL Supply

Voltage

2409

295


Voltage


Control


Control

Left License Lamp Supply

Voltage

F TN 294

G BN/WH 2509


Control

Left License Lamp Supply

Voltage

Helpmelearn


2004 Hummer H2


H

J

K

L

M

BN/WH

WH

GY

PU

OG

2609

393

391

Right License Lamp Supply

Voltage

Rear Window Washer

Switch Signal

Rear Window Wiper

Switch Signal

H BN/WH 2609

J

K

293

Rear Defog Element Supply

Voltage


L

M

WH

GY

PU

OG

393

391

Right License Lamp Supply

Voltage

Rear Window Washer

Switch Signal

Rear Window Wiper

Switch Signal

293


Voltage


C450 Terminal Identification Chassis Harness to Air Suspension Harness (w/ZM6)

Connector

Part

Information

Pin

Wire

Color

A BK

B D-GN z

12052613

z

322

2-Way F Metri-pack 480 Series

Sealed (BK)

Circuit

No.

Function

2950 Ground - w/ZM6

Air Suspension Compressor

Motor Control - w/ZM6

Connector

Part

Information

Pin

Wire

Color

A BK

B RD z

12065863

z

1A

2-Way M Metri-pack 480 Series

Sealed (BK)

Circuit

No.

Function

2A Ground - w/ZM6


Motor Control - w/ZM6

C451 Chassis Harness to Air Suspension Harness (w/ZM6)

Helpmelearn


2004 Hummer H2


Connector

Part

Information

Pin

Wire

Color

A

B

C

D

E

F

G

H

J

K

L

M

N

OG

BN

PU

OG

L-GN

WH

L-BU

-

-

D-

BU/WH

GY

YE

GY z z

15326084 Connector

Part

Information

Circuit

No.

4340

Function

Battery Positive Voltage - w/ZM6

Pin

A

Wire

Color

YE

241 Ignition 3 Voltage - w/ZM6 B YE

5523

16-Way F GT 150 280 Sealed

4.0 5.8 (BK)

Inflator Switch Signal - w/ZM6

C YE

5524

Inflator Switch Supply

Voltage - w/ZM6

5522 Low Reference - w/ZM6

Not Used

D

E

F

YE

YE

-

5520

5521

-

1126

2672

321

2165


Control - w/ZM6

Ride Height Switch Signal - w/ZM6

Not Used


Serial Data - w/ZM6

Air Suspension Relay Control

- w/ZM6

Air Suspension Relay Ground

- w/ZM6

Air Suspension Position

Sensor 5-Volt Reference - w/ZM6

G

H

J

K

L

M

N

YE

YE

-

YE

YE

YE

YE z

15326085

z

16-Way M GT 150 280 Sealed 4.0

5.8 (BK)

Circuit

No.

1B

Function

Battery Positive Voltage - w/ZM6

2F Ignition 3 Voltage - w/ZM6

3H

3D

Inflator Switch Signal - w/ZM6

2C Low Reference - w/ZM6

Not Used

3E

3G

-

3J

3M

3R

3A

Inflator Switch Supply Voltage

- w/ZM6


Control - w/ZM6

Ride Height Switch Signal - w/ZM6

Not Used

SCM (Suspension) Class 2

Serial Data - w/ZM6

Air Suspension Relay Control w/ZM6

Air Suspension Relay Ground w/ZM6

Air Suspension Position Sensor

5-Volt Reference - w/ZM6

Helpmelearn


2004 Hummer H2


P

R

S

BN

PU

BN

2184

2185

2227


Sensor Signal - LR - w/ZM6


Sensor Low Reference - w/ZM6

Air Suspension Sensor - RR - w/ZM6

P

R YE

S

YE

YE

3B

2D

3C

C900 Terminal Identification Liftgate Harness to Liftgate Jumper Harness


Signal - LR - w/ZM6


Low Reference - w/ZM6

Air Suspension Sensor - RR - w/ZM6

A

B

C

Connector

Pin

Part

Information

Wire

Color

TN

PK/BK

WH z z

15336205

12-Way F GT Series Mixed

(BK)

Connector

Part

Information

Circuit

No.

294

Function


Control

Pin

A

Wire

Color

TN

1303 Liftgate Ajar Switch Signal B PK/BK

393


Wash Signal

C WH

D

E

F

GY

BN/WH

BK

391

2609


Signal

Right Rear License Lamp

Supply Voltage

1450 Ground

G OG

H BN


2409


Voltage z z

393

15336209

12-Way M GT Series Mixed

(BK)

Circuit

No.

294

Function


Control

1303 Liftgate Ajar Switch Signal


Wash Signal

D

E

F

GY

BN/WH

BK

391

2609


Signal

Right Rear License Lamp

Supply Voltage

1450 Ground

G

H

OG

BN


2409


Voltage

J GY 295

Helpmelearn

January-01-08 12:23:04 PM


J

Page 45

GY 295



2004 Hummer H2


K

L

M

BN/WH

L-BU

PU

2509

Control

Left Rear License Lamp

Supply Voltage

1620 CHMSL Supply Voltage

293


Voltage

K

L

M

BN/WH

L-BU

PU

2509

Control

Left Rear License Lamp

Supply Voltage

1620 CHMSL Supply Voltage

293


Voltage

SPLICE PACK CONNECTOR END VIEWS

Splice Pack Terminal Identification SP205


Pin

A

B

C

H

J

K

L

M

D

E

F

G

Wire Color

PK

OR

D-GN

L-BU

D-GN/WH

PU

WH

TN

GY

D-BU/WH

D-BU/WH

-

BN

L-GN z

15305291

z

Circuit No.

12-Way F Metri-Pack Splice Saver SGL (BK)

Function

1045 Class 2 Serial Data - Splice Pack SP206

1044 Radio Class 2 Serial Data - Radio

1049 PCM Class 2 Serial Data

1122 ABS/TCS Class 2 Serial Data - EBCM

1133 ATC Class 2 Serial Data - Transfer Case Control Module

1132 DLC Class 2 Serial Data

1038 HVAC Class 2 Serial Data

1047 PDM Class 2 Serial Data

1036 IPC Class 2 Serial Data

2218 Serial Communications Circuit - Splice Pack SP207

1126 SCM (Suspension) Class 2 Serial Data

Not Used

1046 DDM Class 2 Serial Data

1037 BCM Class 2 Serial Data

Helpmelearn


2004 Hummer H2




Pin

A-B

C

D

E

F

Wire Color

-

L-BU

D-BU

YE

PK z

12191910

z

6-Way F GT 150 Splice Saver Sealed 4.0 (BK)

Circuit No.

Not Used

2288 RSA Class 2 Serial Data

Function

2272 Audio Amplifier Class 2 Serial Data w/ Class 2 Amplifier

1127 VCIM Class 2 Serial Data

1045 Serial Communications Circuit - Splice Pack SP205



Pin Wire Color

Helpmelearn

January-01-08 12:23:04 PM z

12191910

z

Circuit No.

6-Way F GT 150 Splice Saver Sealed 4.0 (BK)

Function


2004 Hummer H2


A

B

C

D-E

F

-

D-BU

BN/WH

-

D-BU/WH

-

1128

1048

-

2218


Not Used

SDM Class 2 Serial Data

SCM (Seat) Class 2 Serial Data

Not Used

Serial Communications Circuit - Splice Pack SP205


Pin

A

B

C

D

E

F

Wire Color

-

BK

BK

BK

-

BK z

12176491

z

6-Way F Metri-Pack 280 Splice Saver (BK)

Circuit No.

Function

Not Used

1450

1450

1450

-

1450

Ground

Ground

Ground

Not Used

Ground

Helpmelearn


AIR CONDITIONING

SYSTEM WIRING DIAGRAMS Hummer - H2

SYSTEM WIRING DIAGRAMS

Hummer - H2

2004 Hummer H2


Home

Tuesday, November 29, 2005 9:42:11 AM Page 2 © 2004 Mitchell Repair Information Company, LLC.

2004 Hummer H2


Fig. 1: Automatic A/C Circuit (1 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 2: Automatic A/C Circuit (2 of 2)

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2004 Hummer H2


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Fig. 3: Compressor Circuit

ANTI-LOCK BRAKES

2004 Hummer H2


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2004 Hummer H2


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Fig. 4: Anti-lock Brakes Circuit

ANTI-THEFT

2004 Hummer H2


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2004 Hummer H2


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Fig. 5: Forced Entry Circuit

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 6: Passlock Circuit

BODY CONTROL MODULES

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2004 Hummer H2


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2004 Hummer H2


Fig. 7: Body Control Modules Circuit (1 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 8: Body Control Modules Circuit (2 of 2)

COMPUTER DATA LINES

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2004 Hummer H2


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2004 Hummer H2


Fig. 9: Computer Data Lines Circuit

CRUISE CONTROL

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2004 Hummer H2


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Fig. 10: Cruise Control Circuit

DEFOGGERS

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 11: Defoggers Circuit

ELECTRONIC SUSPENSION

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2004 Hummer H2


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2004 Hummer H2


Fig. 12: Electronic Suspension Circuit

ENGINE PERFORMANCE

6.0L VIN U

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2004 Hummer H2


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2004 Hummer H2


Fig. 13: 6.0L VIN U, Engine Performance Circuit (1 of 5)

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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2



EXTERIOR LIGHTS

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2004 Hummer H2


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Fig. 18: Back-up Lamps Circuit

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 19: Exterior Lamps Circuit (1 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 20: Exterior Lamps Circuit (2 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 21: Off-Road Lighting Circuit

GROUND DISTRIBUTION

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2004 Hummer H2


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2004 Hummer H2


Fig. 22: Ground Distribution Circuit (1 of 5)

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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2



HEADLIGHTS

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2004 Hummer H2


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Fig. 27: Headlights Circuit

HORN

2004 Hummer H2


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2004 Hummer H2


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Fig. 28: Horn Circuit

INSTRUMENT CLUSTER

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 29: Instrument Cluster Circuit

INTERIOR LIGHTS

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2004 Hummer H2


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2004 Hummer H2


Fig. 30: Courtesy Lamps Circuit (1 of 3)

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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2


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2004 Hummer H2


Fig. 33: Instrument Illumination Circuit (1 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 34: Instrument Illumination Circuit (2 of 2)

MEMORY SYSTEMS

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2004 Hummer H2


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2004 Hummer H2


Fig. 35: Driver"s Memory Seat Circuit (1 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 36: Driver"s Memory Seat Circuit (2 of 2)

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2004 Hummer H2


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Fig. 37: Memory Mirrors Circuit

POWER DISTRIBUTION

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 38: Power Distribution Circuit (1 of 6)

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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2


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2004 Hummer H2



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2004 Hummer H2


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2004 Hummer H2



POWER DOOR LOCKS

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2004 Hummer H2


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2004 Hummer H2


Fig. 44: Power Door Locks Circuit (1 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 45: Power Door Locks Circuit (2 of 2)

POWER MIRRORS

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2004 Hummer H2


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Fig. 46: Power Mirrors Circuit

POWER SEATS

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 47: Front Seat Heater Circuit

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2004 Hummer H2


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Fig. 48: Lumbar Circuit

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 49: Passenger Power Seat Circuit

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2004 Hummer H2


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Fig. 50: Rear Seat Heater Circuit

POWER TOP/SUNROOF

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 51: Power Top/Sunroof Circuit

POWER WINDOWS

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2004 Hummer H2


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Fig. 52: Power Windows Circuit

RADIO

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 53: Base Radio Circuit (1 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 54: Base Radio Circuit (2 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 55: Premium Sound Radio Circuit (1 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 56: Premium Sound Radio Circuit (2 of 2)

SHIFT INTERLOCK

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2004 Hummer H2


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2004 Hummer H2


Fig. 57: Ignition Lock Solenoid Circuit

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2004 Hummer H2


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Fig. 58: Shift Interlock Circuit

STARTING/CHARGING

2004 Hummer H2


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2004 Hummer H2


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Fig. 59: Charging Circuit

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 60: Starting Circuit

SUPPLEMENTAL RESTRAINTS

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2004 Hummer H2


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2004 Hummer H2


Fig. 61: Supplemental Restraints Circuit

TRANSMISSION

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2004 Hummer H2


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Fig. 62: A/T Circuit

2004 Hummer H2


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2004 Hummer H2


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Fig. 63: Transfer Case Circuit

WARNING SYSTEMS

2004 Hummer H2


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2004 Hummer H2


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2004 Hummer H2


Fig. 64: Warning Systems Circuit (1 of 2)

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2004 Hummer H2


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2004 Hummer H2


Fig. 65: Warning Systems Circuit (2 of 2)

WIPER/WASHER

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2004 Hummer H2


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2004 Hummer H2


Fig. 66: Front Wiper/Washer Circuit

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2004 Hummer H2


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2004 Hummer H2


Fig. 67: Rear Wiper/Washer Circuit

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2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2

2004 ACCESSORIES & EQUIPMENT

Wiring Systems - Hummer H2

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

Fastener Tightening Specifications

BEC Retaining Bolts

Fender Upper Brace Bolts

Application Metric

Specification

English

9 N.m

80 lb in

25 N.m

18 lb ft

DIAGNOSTIC INFORMATION AND PROCEDURES

UTILITY/VAN ZONING

All grounds, in-line connectors, pass-through grommets, and splices have identifying numbers that correspond to where they are located in the vehicle. The following table explains the numbering system.

2004 Hummer H2


Fig. 1: Utility/Van Zoning

Courtesy of GENERAL MOTORS CORP.

Utility/Van Zoning

Callout

Numbers

100-199

Zone Description

Engine compartment (All forward of the dash panel)

001-099 are additional for the engine compartment (Only to be used if all 100-199 items are used)

200-299

300-399

400-499

Within the instrument panel area

Passenger compartment (From instrument panel to the rear wheelhouse)

Luggage compartment (From the rear wheelhouse to the rear of the vehicle

500-599

600-699

700-799

800-899

900-999

Within the left front door

Within the right front door

Within the left rear door

Within the right rear door

Within the liftgate or endgate door

ELECTRICAL SYMBOLS

Electrical Symbols

OLD Symbol NEW Symbol or

Description

Supplemental Inflatable Restraint (SIR) or Supplemental

Restraint System (SRS) Icon

This icon is used to alert the technician that the system contains SIR/SRS components that require certain precautions before servicing.

Helpmelearn

January-01-08 12:16:49 PM

On-Board Diagnostic (OBD II) Icon

This icon is used to alert the technician that the circuit is essential for proper OBD II emission controls circuit operation. Any circuit which, if it fails, causes the malfunction indicator lamp (MIL) to turn on, is identified as an OBD II circuit.


2004 Hummer H2


Important Icon

This icon is used to alert the technician that there is additional information that will aid in servicing a system.

Voltage Indicator Boxes

These boxes are used on schematics to indicate when voltage is present at a fuse.

Partial Component

When a component is represented in a dashed box, the component or its wiring is not shown in its entirety.

Helpmelearn

January-01-08 12:16:49 PM

Entire Component

When a component is represented in a solid box the component or its wiring is shown in its entirety.


2004 Hummer H2


Fuse

Helpmelearn

January-01-08 12:16:49 PM

Circuit Breaker


2004 Hummer H2


Fusible Link

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2004 Hummer H2


Connector Attached to Component

Pigtail Connector

Helpmelearn

January-01-08 12:16:49 PM

Bolt On or Screw On Eyelet Terminal


2004 Hummer H2


Inline Harness Connector

Splice

Helpmelearn


2004 Hummer H2


Chassis Ground

Case Ground

Single Filament Light Bulbs

Helpmelearn


2004 Hummer H2


Double Filament Light Bulb

Light Emitting Diodes

Capacitor

Helpmelearn


2004 Hummer H2


Battery

Variable Battery

Helpmelearn

January-01-08 12:16:49 PM

Resistor


2004 Hummer H2


Variable Resistor

Helpmelearn

January-01-08 12:16:50 PM

Position Sensor


2004 Hummer H2


I/O Resistors

I/O Switches

Diode

Helpmelearn


2004 Hummer H2


Heating Element

Motor

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Solenoid


2004 Hummer H2


Coil

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Antenna


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Twisted Wires

Shield

Switches

Single Pole/Throw Relay - Normally Open


2004 Hummer H2


Single Pole/Throw Relay - Normally Closed

GENERAL ELECTRICAL DIAGNOSIS PROCEDURES

Basic Knowledge Required

Without a basic knowledge of electricity, it will be difficult to use the diagnostic procedures contained in the service manual. You should understand the basic theory of electricity, and know the meaning of voltage (volts), current (amps), and resistance (ohms). You should also be able to read and understand a wiring diagram, as well as understand what happens in a circuit with an open or a shorted wire.

CHECKING AFTERMARKET ACCESSORIES

Do not connect aftermarket accessories into the following circuits:

CAUTION: Refer to SIR Caution in Cautions and Notices.

z

SIR circuits, all such circuits are indicated on circuit diagrams with the SIR symbol.

NOTE: Refer to OBD II Symbol Description Notice in Cautions and Notices.

z

OBD II circuits, all such circuits are indicated on circuit diagrams with the OBD II symbol.

Always check for aftermarket accessories (non-OEM) as the first step in diagnosing electrical problems. If the vehicle is so equipped, disconnect the system to verify that these add-on accessories are not the cause of the problems.

Possible causes of vehicle problems related to aftermarket accessories include: z

Power feeds connected to points other than the battery z z

Antenna location

Transceiver wiring located too close to vehicle electronic modules or wiring z

Poor shielding or poor connectors on antenna feed line z

Check for recent service bulletins detailing installation guidelines for aftermarket accessories.

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CIRCUIT TESTING

The Circuit Testing section contains the following diagnostic testing information. Using this information along with the diagnostic procedures will identify the cause of the electrical malfunction. z

Using Connector Test Adapters z z

Probing Electrical Connectors

Troubleshooting with a Digital Multimeter z z

Troubleshooting with a Test Lamp

Using Fused Jumper Wires z

Measuring Voltage z z

Measuring Voltage Drop

Measuring Frequency z z

Testing for Continuity

Testing for Short to Ground z

Testing for a Short to Voltage

USING CONNECTOR TEST ADAPTERS

NOTE: Do not insert test equipment probes (DVOM etc.) into any connector or fuse block terminal. The diameter of the test probes will deform most terminals. A deformed terminal will cause a poor connection, which will result in a system failure. Always use the J-35616 GM-Approved Terminal Test Kit or the J 42675

Flat-Wire Probe Adapter in order to front probe terminals. Do not use paper clips or other substitutes to probe terminals.

When using the J-35616 GM-Approved Terminal Test Kit, ensure the terminal test adapter choice is the correct size for the connector terminal. Do not visually choose the terminal test adapter because some connector terminal cavities may appear larger than the actual terminal in the cavity. Using a larger terminal test adapter will damage the terminal. Refer to the J-35616 GM-

Approved Terminal Test Kit label on the inside of the J-35616 GM-Approved

Terminal Test Kit for the correct adapter along with the connector end view for terminal size.

PROBING ELECTRICAL CONNECTORS

IMPORTANT: Always be sure to reinstall the connector position assurance (CPA) and terminal position assurance (TPA) when reconnecting connectors or replacing terminals.

Frontprobe

Disconnect the connector and probe the terminals from the mating side (front) of the connector.

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NOTE:

Refer to the following table as a guide in selecting the correct test adapter for frontprobing connectors:


Test Adapter Description

J-35616-64 Male .64 Series Connector (lt blue)

J-35616-65

J-35616-6

J-35616-7

Female .64 Series Connector (lt blue)

Male Flex MICRO-PACK Series Connector (brown)

Female Flex MICRO-PACK Series Connector (brown)

J-35616-2A

J-35616-3

J-35616-4A

J-35616-5

J-35616-40

J-35616-41

J-35616-42

Male Flex 150 Series Connector (gray)

Female Flex 150 Series Connector (gray)

Male Spade 280 Series Connector (purple)

Female Spade 280 Series Connector (purple)

Male Flex 480 Series Connector (dk blue)

Female Flex 480 Series Connector (dk blue)

Male Flex 630 Series Connector (red)

J-35616-43

J-35616-44

J-35616-45

J-35616-8

J-35616-9

Female Flex 630 Series Connector (red)

Male 800 Series Connector (yellow)

Female 800 Series Connector (yellow)

Male Weather Pack Connector (orange)

Female Weather Pack Connector (orange)

Backprobe

Do not insert test equipment probes (DVOM etc.) into any connector or fuse block terminal. The diameter of the test probes will deform most terminals. A deformed terminal will cause a poor connection, which will result in a system failure. Always use the J-35616 GM-Approved Terminal Test Kit or the J 42675

Flat-Wire Probe Adapter in order to front probe terminals. Do not use paper clips or other substitutes to probe terminals.

When using the J-35616 GM-Approved Terminal Test Kit, ensure the terminal test adapter choice is the correct size for the connector terminal. Do not visually choose the terminal test adapter because some connector terminal cavities may appear larger than the actual terminal in the cavity. Using a larger terminal test adapter will damage the terminal. Refer to the J-35616 GM-

Approved Terminal Test Kit label on the inside of the J-35616 GM-Approved

Terminal Test Kit for the correct adapter along with the connector end view for terminal size.

IMPORTANT:

z z

Backprobe connector terminals only when specifically required in diagnostic procedures.

Do not backprobe a sealed (Weather Pack(R)) connector, less than a 280 series Metri-Pack connector, a Micro-Pack connector, or a flat wire (dock and lock) connector.

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2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2 z z

Backprobing can be a source of damage to connector terminals. Use care in order to avoid deforming the terminal, either by forcing the test probe too far into the cavity or by using too large of a test probe.

After backprobing any connector, inspect for terminal damage. If terminal damage is suspected, test for proper terminal contact.

Do not disconnect the connector and probe the terminals from the harness side (back) of the connector.

TROUBLESHOOTING WITH A DIGITAL MULTIMETER

NOTE: Refer to Test Probe Notice in Cautions and Notices.

IMPORTANT: Circuits which include any solid state control modules, such as the PCM, should only be tested with a 10 megohm or higher impedance digital multimeter such as the J 39200 .

The J 39200 instruction manual is a good source of information and should be read thoroughly upon receipt of the DMM as well as kept on hand for future reference.

A DMM should be used instead of a test lamp in order to test for voltage in high impedance circuits. While a test lamp shows whether voltage is present, a DMM indicates how much voltage is present.

The ohmmeter function on a DMM shows how much resistance exists between 2 points along a circuit. Low resistance in a circuit means good continuity.

IMPORTANT: Disconnect the power feed from the suspect circuit when measuring resistance with a DMM. This prevents incorrect readings. DMMs apply such a small voltage to measure resistance that the presence of voltages can upset a resistance reading.

Diodes and solid state components in a circuit can cause a DMM to display a false reading. To find out if a component is affecting a measurement take a reading once, then reverse the leads and take a second reading. If the readings differ the solid state component is affecting the measurement.

Following are examples of the various methods of connecting the DMM to the circuit to be tested: z z

Backprobe both ends of the connector and either hold the leads in place while manipulating the connector or tape the leads to the harness for continuous monitoring while you perform other operations or test driving. Refer to


.

Disconnect the harness at both ends of the suspected circuit where it connects either to a component or to other harnesses. z

If the system that is being diagnosed has a specified pinout or breakout box, it may be used in order to simplify connecting the DMM to the circuit or for testing multiple circuits quickly.

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TROUBLESHOOTING WITH A TEST LAMP

Tools Required

J 35616-200 12-Volt Unpowered Test Lamp


A test lamp can simply and quickly test a low impedance circuit for voltage.

The J 35616-200 is Micro-Pack compatible and comprised of a 12-volt light bulb with an attached pair of leads.

To properly operate this tool use the following procedures.

Testing For Voltage

When testing for voltage:

1. Attach 1 lead to ground.

2. Touch the other lead to various points along the circuit where voltage should be present.

3. When the bulb illuminates, there is voltage at the point being tested.

Testing For Ground

When testing for ground:

1. Attach 1 lead to battery positive voltage.

2. Touch the other lead to various points along the circuit where ground should be present.

3. When the bulb illuminates, there is ground at the point being tested.

USING FUSED JUMPER WIRES

Tools Required

J 36169-A Fused Jumper Wire. See Special Tools and Equipment .

IMPORTANT: A fused jumper may not protect solid state components from being damaged.

The J 36169-A includes small clamp connectors that provide adaptation to most connectors without damage.

This fused jumper wire is supplied with a 20-A fuse which may not be suitable for some circuits. Do not use a fuse with a higher rating than the fuse that protects the circuit being tested. See Special Tools and Equipment

MEASURING VOLTAGE

NOTE:

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Refer to Test Probe Notice in Cautions and Notices.


2004 Hummer H2


The following procedure measures the voltage at a selected point in a circuit.

1. Disconnect the electrical harness connector for the circuit being tested, if necessary.

2. Enable the circuit and/or system being tested. Use the following methods: z

Turn ON the ignition, with the engine OFF. z z

Turn ON the engine.

Turn ON the circuit and/or system with a scan tool in Output Controls. z

Turn ON the switch for the circuit and/or system being tested.

3. Select the V (AC) or V (DC) position on the DMM.

4. Connect the positive lead of the DMM to the point of the circuit to be tested.

5. Connect the negative lead of the DMM to a good ground.

6. The DMM displays the voltage measured at that point.

MEASURING VOLTAGE DROP


The following procedure determines the difference in voltage potential between 2 points.

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Fig. 2: Measuring Voltage Drop


1. Set the rotary dial of the DMM to the V (DC) position.

2. Connect the positive lead of the DMM to 1 point of the circuit to be tested.

3. Connect the negative lead of the DMM to the other point of the circuit.

4. Operate the circuit.

5. The DMM displays the difference in voltage between the 2 points.

MEASURING FREQUENCY


The following procedure determines the frequency of a signal.

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IMPORTANT: Connecting the DMM to the circuit before pressing the Hz button will allow the

DMM to autorange to an appropriate range.

1. Apply power to the circuit.

2. Set the rotary dial of the DMM to the V (AC) position.

3. Connect the positive lead of the DMM to the circuit to be tested.


5. Press the Hz button on the DMM.

6. The DMM will display the frequency measured.

TESTING FOR CONTINUITY


The following procedures verify good continuity in a circuit.

With a DMM

1. Set the rotary dial of the DMM to the ohm position.

2. Disconnect the power feed (i.e. fuse, control module) from the suspect circuit.

3. Disconnect the load.

4. Press the MIN MAX button on the DMM.

5. Connect one lead of the DMM to one end of the circuit to be tested.

6. Connect the other lead of the DMM to the other end of the circuit.

7. If the DMM displays low or no resistance and a tone is heard, the circuit has good continuity.

With a Test Lamp

IMPORTANT: Only use the test lamp procedure on low impedance power and ground circuits.

1. Remove the power feed (i.e. fuse, control module) from the suspect circuit.


3. Connect 1 lead of the test lamp to 1 end of the circuit to be tested.

4. Connect the other lead of the test lamp to battery positive voltage.

5. Connect the other end of the circuit to ground.

6. If the test lamp illuminates (full intensity), then the circuit has good continuity.

TESTING FOR SHORT TO GROUND


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The following procedures test for a short to ground in a circuit.

With a DMM



3. Set the rotary dial of the DMM to the ohm position.

4. Connect 1 lead of the DMM to 1 end of the circuit to be tested.

5. Connect the other lead of the DMM to a good ground.

6. If the DMM does NOT display infinite resistance (OL), there is a short to ground in the circuit.

With a Test Lamp



3. Connect 1 lead of the test lamp to battery positive voltage.

4. Connect the other lead of the test lamp to 1 end of the circuit to be tested.

5. If the test lamp illuminates, there is a short to ground in the circuit.

Fuse Powering Several Loads

1. Review the system schematic and locate the fuse that is open.

2. Open the first connector or switch leading from the fuse to each load.

3. Connect a DMM across the fuse terminals (be sure that the fuse is powered). z z

When the DMM displays voltage the short is in the wiring leading to the first connector or switch.

If the DMM does not display voltage refer to the next step.

4. Close each connector or switch until the DMM displays voltage in order to find which circuit is shorted.

TESTING FOR A SHORT TO VOLTAGE


The following procedure tests for a short to voltage in a circuit.

1. Set the rotary dial of the DMM to the V (DC) position.

2. Connect the positive lead of the DMM to 1 end of the circuit to be tested.


4. Turn ON the ignition and operate all accessories.

5. If the voltage measured is greater than 1 volt, there is a short to voltage in the circuit.

TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS

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Tools Required z

J 35616 GM-Approved Terminal Test Kit z z

J-38125 Terminal Repair Kit. See Special Tools and Equipment .

J 42675 Flat-Wire Probe Adapter. See Special Tools and Equipment .

Most intermittent conditions are caused by faulty electrical connections or wiring. Inspect for the following items: z z

Wiring broken inside the insulation

Poor connection between the male and female terminal at a connector. z z

Poor terminal to wire connection-Some conditions which fall under this description are poor crimps, poor solder joints, crimping over the wire insulation rather than the wire itself and corrosion in the wire to terminal contact area, etc.

Wire insulation which is rubbed through-This causes an intermittent short as the bare area touches other wiring or parts of the vehicle. z z

Refer to Inducing Intermittent Fault Conditions in order to duplicate the conditions required in order to verify the complaint.

Refer to Testing for Electrical Intermittents for test procedures to detect intermittent open, high resistance, short to ground, and short to voltage conditions. z

Refer to Scan Tool Snapshot Procedure for advanced intermittent diagnosis.

Testing for Proper Terminal Contact

It is important to test terminal contact at the component and any inline connectors before replacing a suspect component. Mating terminals must be inspected to ensure good terminal contact. A poor connection between the male and female terminal at a connector may be the result of contamination or deformation.

Contamination may be caused by the connector halves being improperly connected. A missing or damaged connector seal, damage to the connector itself, or exposing the terminals to moisture and dirt can also cause contamination. Contamination, usually in the underhood or underbody connectors, leads to terminal corrosion, causing an open circuit or intermittently open circuit.

Deformation is caused by probing the mating side of a connector terminal without the proper adapter. Always use the J 35616 when probing connectors. Other causes of terminal deformation are improperly joining the connector halves, or repeatedly separating and joining the connector halves. Deformation, usually to the female terminal contact tang, can result in poor terminal contact causing an open or intermittently open circuit. See

Special Tools and Equipment .

Round Wire Connectors

Follow the procedure below to test terminal contact of Metri-Pack or 56 series terminals. Refer to the J-38125 or the J 38125-4 Instruction Manual for terminal identification. See Special Tools and Equipment .

Follow the procedure below in order to test terminal contact.

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1. Separate the connector halves.

2. Visually inspect the connector halves for contamination. Contamination may result in a white or green build-up within the connector body or between terminals. This causes high terminal resistance, intermittent contact, or an open circuit. An underhood or underbody connector that shows signs of contamination should be replaced in its entirety: terminals, seals, and connector body.

3. Using an equivalent male terminal from the J-38125 , test that the retention force is significantly different between a good terminal and a suspect terminal. Replace the female terminal in question. See Special

Tools and Equipment .

Flat Wire (Dock and Lock) Connectors

or

There are no serviceable parts for flat wire (dock and lock) connectors on the harness side or the component side.

Follow the procedure below in order to test terminal contact.

1. Remove the component in question.

2. Visually inspect each side of the connector for signs of contamination. Avoid touching either side of the connector as oil from your skin may be a source of contamination as well.

3. Visually inspect the terminal bearing surfaces of the flat wire circuits for splits, cracks, or other imperfections that could cause poor terminal contact. Visually inspect the component side connector to ensure that all of the terminals are uniform and free of damage or deformation.

4. Insert the appropriate adapter from the J 42675 on the flat wire harness connector in order to test the circuit in question. See Special Tools and Equipment .

INDUCING INTERMITTENT FAULT CONDITIONS

In order to duplicate the customer's concern, it may be necessary to manipulate the wiring harness if the malfunction appears to be vibration related. Manipulation of a circuit can consist of a wide variety of actions, including: z

Wiggling the harness z z

Disconnecting a connector and reconnecting

Stressing the mechanical connection of a connector z z

Pulling on the harness or wire in order to identify a separation/break inside the insulation

Relocating a harness or wires

All these actions should be performed with some goal in mind. For instance, with a scan tool connected, wiggling the wires may uncover a faulty input to the control module. The snapshot option would be appropriate here. Refer to Scan Tool Snapshot Procedure . You may need to load the vehicle in order to duplicate the concern. This may require the use of weights, floorjacks, jackstands, frame machines, etc. In these cases you are attempting to duplicate the concern by manipulating the suspension or frame. This method is useful in finding

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2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2 harnesses that are too short and their connectors pull apart enough to cause a poor connection. A DMM set to

Peak Min/Max mode and connected to the suspect circuit while testing can yield desirable results. Refer to

Testing for Electrical Intermittents .

Certainly, using the senses of sight, smell, and hearing while manipulating the circuit can provide good results as well.

There may be instances where circuit manipulation alone will not meet the required criteria for the fault condition to appear. In such cases it may be necessary to expose the suspect circuit to other conditions while manipulating the harness. Such conditions would include high moisture conditions, along with exceptionally high or low temperatures. The following discusses how to expose the circuit to these kinds of conditions.

Salt Water Spray

Some compounds possess the ability to conduct electricity when dissolved in water such as ordinary salt. By mixing table salt with water in sufficient quantities, you can enhance the conductive properties of water so that any circuit which may be sensitive to moisture will more readily fail when liberally sprayed with this mixture.

Mixing 0.35L (12 oz) of water with approximately 1 tablespoon of salt will yield a salt solution of 5 percent.

Fill a normal spray bottle with this mixture. This mixture is sufficient to enhance the water's own conductivity.

This may cause the circuit to fail more easily when sprayed. Once the mixture is completed, spray the suspect area liberally with the solution. Then, while monitoring either a scan tool or DMM, manipulate the harness as discussed previously.

High Temperature Conditions

Tools Required

J 25070 Heat Gun. See Special Tools and Equipment .

High Temperature Conditions

If the complaint tends to be heat related, you can simulate the condition using the J 25070 . See Special Tools

and Equipment .

Using the heat gun, you can heat up the suspected area or component. Manipulate the harnesses under high temperature conditions while monitoring the scan tool or DMM to locate the fault condition.

The high temperature condition may be achieved simply by test driving the vehicle at normal operating temperature. If a heat gun is unavailable, consider this option to enhance your diagnosis. This option does not allow for the same control, however.

Low Temperature Conditions

Depending on the nature of the fault condition, placing a fan in front of the vehicle while the vehicle is in the shade can have the desired effect.

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If this is unsuccessful, use local cooling treatments such as ice or a venturi type nozzle (one that provides hot or cold air). This type of tool is capable of producing air stream temperatures down to -18°C (0°F) from one end and 71°C (160°F) from the other. This is ideally suited for localized cooling needs.

Once the vehicle, component, or harness has been sufficiently cooled, manipulate the harness or components in an effort to duplicate the concern.

TESTING FOR ELECTRICAL INTERMITTENTS

Perform the following procedures while wiggling the harness from side to side. Continue this at convenient points (about 6 inches apart) while watching the test equipment. z z

Testing for Short to Ground

Testing for Continuity z

Testing for a Short to Voltage

If the fault is not identified, perform the procedure below using the MIN MAX feature on the J 39200 DMM.

This feature allows you to manipulate the circuit without having to watch the J 39200 . The J 39200 will generate an audible tone when a change is detected.

IMPORTANT: The J 39200 must be used in order to perform the following procedure since the J 39200 can monitor current, resistance or voltage while recording the minimum (MIN), and maximum (MAX) values measured.

1. Connect the J 39200 to both sides of a suspected connector (still connected), or from one end of a suspected circuit to the other. Refer to Troubleshooting with a Digital Multimeter for information on connecting the J 39200 to the circuit.

2. Set the rotary dial of the J 39200 to the V (AC) or V (DC) position.

3. Press the range button of the J 39200 in order to select the desired voltage range.

4. Press the MIN MAX button of the J 39200 . The J 39200 displays 100 ms RECORD and emits an audible tone (beep).

IMPORTANT: The 100 ms RECORD mode is the length of time an input must stay at a new value in order to record the full change.

5. Simulate the condition that is potentially causing the intermittent connection, either by wiggling the connections or the wiring, test driving, or performing other operations. Refer to Inducing Intermittent

Fault Conditions .

6. Listen for the audible Min Max Alert which indicates that a new minimum or maximum value has been recorded.

7. Press the MIN MAX button once in order to display the MAX value and note the value.

8. Press the MIN MAX button again in order to display the MIN value and note the value.

9. Determine the difference between the MIN and MAX values.

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2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2 z

If the variation between the recorded MIN and MAX voltage values is 1 volt or greater an intermittent open or high resistance condition exists. Repair the condition as necessary. z

If the variation between the recorded MIN and MAX voltage values is less than 1 volt an intermittent open or high resistance condition does not exist.

SCAN TOOL SNAPSHOT PROCEDURE

Snapshot is a recording of what a control module on the vehicle was receiving for information while the snapshot is being made. A snapshot may be used to analyze the data during the time a vehicle condition is current. This allows you to concentrate on making the condition occur, rather than trying to view all the data in anticipation of the fault. The snapshot contains information around a trigger point that you have determined.

Only a single data list may be recorded in each snapshot. The Scan Tool has the ability to store 2 snapshots.

The ability to record 2 snapshots allows comparing hot versus cold and good versus bad vehicle scenarios. The snapshots are stored on a first-in, first-out basis. If a third snapshot is taken, the first snapshot stored in the memory will be lost.

Snapshots can be 1 of 2 types: z z

Snapshot - taken from the Snapshot menu choice

Quick Snapshot - taken from the Data Display soft key choice, does not contain DTC information

When a snapshot is taken, it is recorded on the memory card and may contain as many as 1200 frames of information. Because the snapshot is recorded onto the memory card, snapshots are not lost if the Scan Tool is powered down.

The snapshot replay screen has a plot soft key that can be of great value for intermittent diagnosis. The snapshot plot feature can help you to quickly determine if a sensor is outside of its expected values by plotting 3 parameters at a time. The data will be displayed both graphically and numerically showing the minimum and maximum values for all frames captured. This is helpful, especially if the fault occurs only once and does not set a DTC.

CIRCUIT PROTECTION - FUSES

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Fig. 3: View Of Good Fuse & Open (Melted) Fuse


The fuse is the most common method of an automotive wiring circuit protection. Whenever there is an excessive amount of current flowing through a circuit the fusible element will melt and create an open or incomplete circuit. Fuses are an one time protection device and must be replaced each time the circuit is overloaded. To determine if a fuse is open, remove the suspected fuse and examine the element in the fuse for an open (2). If not broken (1), also check for continuity using a DMM or a continuity tester. If the element is open or continuity is suspect, replace the fuse with one of equal current rating.

Fuse Types

Current Rating Amperes

Auto Fuses, Mini Fuses

2

3

5

7.5

10

15

20

25

30

Maxi Fuses

20

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Color

Gray

Violet

Tan

Brown

Red

Blue

Yellow

White or Natural

Green

Yellow


2004 Hummer H2


30

40

60

50

Light Green

Orange or Amber

Blue

Red

CIRCUIT PROTECTION - CIRCUIT BREAKERS

A circuit breaker is a protective device that is designed to open the circuit when a current load is in excess of the rated breaker capacity. If there is a short or other type of overload condition in the circuit, the excessive current will open the circuit between the circuit breaker terminals. Two types of circuit breakers are used.

Circuit Breaker

This type opens when excessive current passes through it for a period of time. It closes again after a few seconds, and if the cause of the high current is still present, it will open again. The circuit breaker will continue to cycle open and closed until the condition causing the high current is removed.

Positive Temperature Coefficient (PTC) Circuit Breaker

This type greatly increases its resistance when excessive current passes through it. The excessive current heats the PTC device, as the device heats its resistance increases. Eventually the resistance gets so high that the circuit is effectively open. Unlike the ordinary circuit breaker the PTC unit will not reset until the circuit is opened, by removing the voltage from its terminals. Once the voltage is removed the circuit breaker will re-close within a second or 2.

CIRCUIT PROTECTION - FUSIBLE LINKS

Fusible link is wire designed to melt and break continuity when excessive current is applied. It is often located between or near the battery and starter or electrical center. Use a continuity tester or a DMM at each end of the wire containing the fusible link in order to determine if it is broken. If broken, it must be replaced with fusible link of the same gauge size.

Repairing a Fusible Link

IMPORTANT: Fusible links cut longer than 225 mm (approximately 9 in) will not provide sufficient overload protection.

Refer to Splicing Copper Wire Using Splice Clips .

WIRING REPAIRS

The Wiring Repairs section contains the following types of wiring repair information. Using these elements together will make wiring repair faster and easier: z

Circuit Protection - Fuses

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Circuit Protection - Circuit Breakers z z

Circuit Protection - Fusible Links

Repairing Damaged Wire Insulation z z

Splicing Copper Wire Using Splice Clips

Splicing Copper Wire Using Splice Sleeves z

Splicing Twisted or Shielded Cable z z

Splicing Inline Harness Diodes

Heated Oxygen Sensor (HO2S) Wiring Repairs z z

SIR/SRS Wiring Repairs

Flat Wire Repairs

REPAIRING DAMAGED WIRE INSULATION

If the conductive portion of the wire is not damaged, locate the problem and apply tape around the wire. If the damage is more extensive, replace the faulty segment of the wire. Refer to Splicing Copper Wire Using Splice

Clips and follow the instruction to repair the wire.

Wire Size Conversion

Metric Wire Sizes (mm 2)

0.22

0.35

0.5

0.8

1.0

2.0

3.0

5.0

8.0

13.0

19.0

32.0

50.0

AWG Sizes

24

22

20

18

16

14

12

10

8

6

4

2

1/0

FLAT WIRE REPAIRS

NOTE: The flat wire within the flex wiring harness is not serviceable. If an open or short exists within the flex wiring harness the complete harness must be replaced.

HEATED OXYGEN SENSOR (HO2S) WIRING REPAIRS

Tools Required

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NOTE: Do not solder repairs under any circumstances as this could result in the air reference being obstructed.

Heated Oxygen Sensor (HO2S) Wiring Repairs

If the heated oxygen sensor pigtail wiring, connector, or terminal is damaged the entire oxygen sensor assembly must be replaced. Do not attempt to repair the wiring, connector, or terminals. In order for the sensor to function properly it must have a clean air reference. This clean air reference is obtained by way of the oxygen sensor signal and heater wires. Any attempt to repair the wires, connectors or terminals could result in the obstruction of the air reference and degrade oxygen sensor performance.

The following guidelines should be used when servicing the heated oxygen sensor: z

Do not apply contact cleaner or other materials to the sensor or vehicle harness connectors. These materials may get into the sensor, causing poor performance. Also, the sensor pigtail and harness wires must not be damaged in such a way that the wires inside are exposed. This could provide a path for foreign materials to enter the sensor and cause performance problems. z z

Neither the sensor nor vehicle lead wires should be bent sharply or kinked. Sharp bends, kinks, etc., could block the reference air path through the lead wire.

Do not remove or defeat the oxygen sensor ground wire (where applicable). Vehicles that utilize the ground wire sensor may rely on this ground as the only ground contact to the sensor. Removal of the ground wire will also cause poor engine performance. z

To prevent damage due to water intrusion, be sure that the peripheral seal remains intact on the vehicle harness connector.

The engine harness may be repaired using the J-38125 . See Special Tools and Equipment .

SPLICING COPPER WIRE USING SPLICE CLIPS

IMPORTANT: When making a splice in an area that may be exposed to moisture use a crimp and seal splice sleeve instead of a Splice Clip. Refer to Splicing Copper Wire

Using Splice Sleeves

Tools Required


Splicing Copper Wire Using Splice Clips

1. Open the harness. z z

If the harness is taped, remove the tape.

To avoid wiring insulation damage, use a sewing ripper in order to cut open the harness. z

If the harness has a black plastic conduit, pull out the desired wire.

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2. Cut the wire. z z

Cut as little wire off the harness as possible.

Ensure that each splice is at least 40 mm (1.5 in) away from other splices, harness branches and connectors. This helps prevent moisture from bridging adjacent splices and causing damage.

3. Select the proper size and type of wire. z

The wire must be of equal or greater size than the original (except fusible link). z

The wire's insulation must have the same or higher temperature rating.

Use general purpose insulation for areas that are not subject to high temperatures.

Use a cross-linked polyethylene insulated wire for areas where high temperatures are expected.

IMPORTANT: Use cross-linked polyethylene wire to replace PVC, but do not replace cross-linked polyethylene with PVC.

Cross-linked polyethylene wire is not fuel resistant. Do not use to replace wire where there is the possibility of fuel contact.

4. Strip the insulation. z z

Select the correct size opening in the wire stripper or work down from the largest size.

Strip approximately 7.5 mm (5/16 in) of insulation from each wire to be spliced.

5. Select the proper clip to secure the splice. Follow the instructions in the J-38125 in order to determine the proper clip size crimp tool and anvil. See Special Tools and Equipment .

6. Overlap the 2 stripped wire ends and hold them between thumb and forefinger.

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Fig. 4: Identifying Splice Clip & Stripped Wires


7. Center the splice clip (2) over the stripped wires (1) and hold the clip in place. z

Ensure that the wires extend beyond the clip in each direction. z

Ensure that no insulation is caught under the clip.

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Fig. 5: Centering Crimp Tool Over Splice Clip & Wires


8. Center the crimp tool over the splice clip and wires.

9. Apply steady pressure until the crimp tool closes.

Ensure that no strands of wire are cut.

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Fig. 6: Crimping Splice Clip & Wires


10. Crimp the splice on each end (2).

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Fig. 7: Applying Solder To Back Of Clip Opening


11. Apply 60/40 rosin core solder to the opening in the back of the clip. Follow the manufacturer's instructions for the solder equipment.

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Fig. 8: Applying Electrical Tape


12. Tape the splice. Roll on enough tape in order to duplicate the thickness of the insulation on the existing wires.

Fig. 9: Additional Splice Taping


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13. Additional tape can be applied to the wire if the wire does not belong in a conduit or another harness covering. Use a winding motion in order to cover the first piece of tape.

SPLICING COPPER WIRE USING SPLICE SLEEVES

Tools Required


Splicing Copper Wire Using Splice Sleeves

IMPORTANT: Use only duraseal splice sleeves, other splice sleeves may not protect the splice from moisture or provide a good electrical connection.

Use duraseal splice sleeves to form a one-to-one splice on all types of insulation except tefzel and coaxial. Use duraseal splice sleeves where there is special requirements such as moisture sealing. Follow the instructions below in order to splice copper wire using duraseal splice sleeves.

Splicing Copper Wire Using Splice Sleeves

Splice Sleeve Color

Salmon

12089189

Blue

12089190

Yellow

12089191

Crimp Tool Nest Color

Red

Blue

Yellow

Wire Gauge AWG/(Metric)

20,18 / (0.5, 0.8)

16, 14 / (1.0, 2.0)

12, 10 / (3.0, 5.0)




If the harness has a black plastic conduit, pull out the desired wire.

2. Cut the wire. z z

Cut as little wire off the harness as possible.

Ensure that each splice is at least 40 mm (1.5 in) away from other splices, harness branches and connectors. This helps prevent moisture from bridging adjacent splices and causing damage.

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Fig. 10: Proper Crimping Of Solderless Connector


3. Select the proper size and type of wire. z z

The wire must be of equal or greater size than the original.

The wires insulation must have the same or higher temperature rating (4).

Use general purpose insulation for areas that are not subject to high temperatures.

Use a cross-linked polyethylene insulated wire for areas where high temperatures are expected.

IMPORTANT: Use cross-linked polyethylene wire to replace PVC, but do not replace cross-linked polyethylene with PVC.

Cross-linked polyethylene wire is not fuel resistant. Do not use to replace wire where there is the possibility of fuel contact.

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4. Strip the insulation. z z

Select the correct size opening in the wire stripper or work down from the largest size.

Strip approximately 7.5 mm (5/16 in) of insulation from each wire to be spliced (1).

5. Select the proper duraseal splice sleeve (2) and the required crimp nest tool, refer to the Crimp and Seal

Splice Table.

6. Place the duraseal splice sleeve in the J-38125-8 (12085115) crimp tool nest so that the crimp falls at point 1 on the splice.

7. Close the hand crimper handles slightly in order to hold the duraseal splice sleeve firmly in the proper crimp tool nest.

8. Insert the wires into the duraseal splice sleeve until the wire hits the barrel stop. The splice sleeve has a stop in the middle of the barrel in order to prevent the wire from passing through the splice (3).

9. Close the handles of the J-38125-8 (12085115) until the crimper handles open when released. The crimper handles will not open until the proper amount of pressure is applied to the splice sleeve.

10. Shrink the insulation around the splice. z

Using the heat torch apply heat to the crimped area of the barrel. z

Gradually move the heat barrel to the open end of the tubing.

The tubing will shrink completely as the heat is moved along the insulation.

A small amount of sealant will come out of the end of the tubing when sufficient shrinkage is achieved.

SPLICING TWISTED OR SHIELDED CABLE

Twisted/shielded cable is used in order to protect wiring from electrical noise. Two-conductor cable of this construction is used between the radio and the Delco-Bose(R) speaker/amplifier units and other applications where low level, sensitive signals must be carried. Follow the instructions below in order to repair the twisted/shielded cable.

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Fig. 11: Outer Wiring Jacket


1. Remove the outer jacket (1). Use care not to cut into the drain wire of the mylar tape.

2. Unwrap the tape. Do not remove the tape. Use the tape in order to rewrap the twisted conductors after the splice is made.

Fig. 12: Inspecting Wiring Connections


3. Prepare the splice. Untwist the conductors and follow the splicing instructions for copper wire.

Staggering the splices by 65 mm (2.5 in) is recommended.

IMPORTANT: Apply the mylar tape with the aluminum side inward. This ensures good

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electrical contact with the drain wire.

Fig. 13: View Of Diode On Wire


4. Re-assemble the cable. z z

Rewrap the conductors with the mylar tape.

Use caution not to wrap the drain wire in the tape (1). z

Follow the splicing instructions for copper wire and splice the drain wire. z

Wrap the drain wire around the conductors and tape with mylar tape.

Fig. 14: Repaired Wire Covered With Electrical Tape


5. Tape over the entire cable. Use a winding motion when you apply the tape.

SPLICING INLINE HARNESS DIODES

Many vehicle electrical systems use a diode to isolate circuits and protect the components from voltage spikes.

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When installing a new diode use the following procedure.




If the harness has a black plastic conduit, pull out the diode.

2. If the diode is taped to the harness, remove all of the tape.

3. Check and record the current flow direction and orientation of diode.

4. Remove the inoperative diode from the harness with a suitable soldering tool.

IMPORTANT: If the diode is located next to a connector terminal remove the terminal(s) from the connector to prevent damage from the soldering tool.

5. Carefully strip away a section of insulation next to the old soldered portion of the wire(s). Do not remove any more than is needed to attach the new diode.

6. Check current flow direction of the new diode, being sure to install the diode with correct bias. Reference the appropriate service manual wiring schematic to obtain the correct diode installation position.

7. Attach the new diode to the wire(s) using 60/40 rosin core solder. Before soldering attach some heat sinks

(aluminum alligator clips) across the diode wire ends to protect the diode from excessive heat. Follow the manufacturer's instruction for the soldering equipment.

8. Reinstall terminal(s) into the connector body if previously removed.

IMPORTANT: To prevent shorts to ground and water intrusion, completely cover all exposed wire and diode attachment points with tape.

9. Tape the diode to the harness or connector using electrical tape.

SIR/SRS WIRING REPAIRS

Tools Required


The Supplemental Inflatable Restraint (SIR) System/Supplemental Restraint System (SRS) requires special wiring repair procedures due to the sensitive nature of the circuitry. Follow the specific procedures and instructions when working with the SIR/SRS system wiring, and the wiring components (such as connectors and terminals).

IMPORTANT: Do not use the terminals in the kit in order to replace damaged SIR/SRS system terminals unless specifically indicated by the terminal package.

The tool kit J-38125 contains the following items:. See Special Tools and Equipment .

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Duraseal splice sleeves-In order to repair the SIR/SRS system wiring z z

A wire stripping tool

A special crimping tool z z

A heat torch

An instruction manual

The duraseal splice sleeves have the following 2 critical features: z

A special heat shrink sleeve environmentally seals the splice. The heat shrink sleeve contains a sealing adhesive inside. z

A cross hatched (knurled) core crimp provides necessary contact integrity for the sensitive, low energy circuits.

The J-38125 also serves as a generic terminal repair kit. See Special Tools and Equipment . The kit contains the following items: z

A large sampling of common electrical terminals z z

The correct tools in order to attach the terminals to the wires

The correct tools in order to remove the terminals from the connectors

SIR/SRS Connector (Plastic Body and Terminal Metal Pin) Repair

Use the connector repair assembly packs in order to repair the damaged SIR/SRS wire harness connectors and the terminals. Do not use the connector repair assembly pack in order to repair the pigtails. These kits include an instruction sheet and the duraseal splice sleeves. Use the duraseal splice sleeves in order to splice the new wires, connectors, and terminals to the harness. The splice crimping tool is color keyed in order to match the splices from the J-38125 . You must use the splice crimping tool in order to apply these splices. See Special

Tools and Equipment .

The terminals in the SIR/SRS system are made of a special metal. This metal provides the necessary contact integrity for the sensitive, low energy circuits. These terminals are only available in the connector repair assembly packs. Do not substitute any other terminals for those in the assembly packs.

If the individual terminals are damaged on the sensing and diagnostic module (SDM) harness connector, use one of the following 2 components in order to replace the SDM harness connector: z z

The SDM harness connector pigtail assembly

The SDM harness connector replacement kit

If the individual terminals are damaged on any other SIR/SRS connection, use the appropriate connector repair assembly pack in order to replace the entire connection. Replace the entire SIR/SRS wiring harness, if needed, in order to maintain SIR/SRS circuit integrity.

SIR/SRS Wire Pigtail Repair

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IMPORTANT: Do not make wire, connector, or terminal repairs on components with wire pigtails.

A wire pigtail is a wire or wires attached directly to the device (not by a connector). If a wiring pigtail is damaged, you must replace the entire component (with pigtail). The inflatable restraint steering wheel module coil is an example of a pigtail component.

SIR/SRS Wire Repair

IMPORTANT: Refer to Wiring Repairs in order to determine the correct wire size for the circuit you are repairing. You must obtain this information in order to ensure circuit integrity.

If any wire except the pigtail is damaged, repair the wire by splicing in a new section of wire of the same gauge size (0.5 mm, 0.8 mm, 1.0 mm etc.). Use the duraseal splice sleeves and splice crimping tool from the J-38125 .

Use the following wiring repair procedures in order to ensure the integrity of the duraseal splice sleeves. See

Special Tools and Equipment .

SIR/SRS Wiring Repairs

Splice Sleeve Color

Salmon (Yellow-Pink)

12089189

Blue

12089190

Yellow

12089191

Crimp Tool Nest Color

Red (1)

Blue (2)

Yellow (3)

Wire Gauge mm

2

/ (AWG)

0.035-0.8/(18-20)

1-2/(14-16)

3-5/(10-12)

IMPORTANT: You must perform the following procedures in the listed order. Repeat the procedure if any wire strands are damaged. You must obtain a clean strip with all of the wire strands intact.

1. Open the harness by removing any tape: z z

Use a sewing seam ripper (available from sewing supply stores) in order to cut open the harness in order to avoid wire insulation damage.

Use the duraseal splice sleeves on all types of insulation except tefzel and coaxial. z

Do not use the crimp and duraseal splice sleeve to form a splice with more than 2 wires coming together.

2. Cut as little wire off the harness as possible. You may need the extra length of wire in order to change the location of a splice.

Adjust splice locations so that each splice is at least 40 mm (1.5 in) away from the other splices, harness branches, or connectors.

3. Strip the insulation:

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When adding a length of wire to the existing harness, use the same size wire as the original wire. z

Perform one of the following items in order to find the correct wire size:

Find the wire on the schematic and convert the metric size to the equivalent AWG size.

Use an AWG wire gauge.

If you are unsure of the wire size, begin with the largest opening in the wire stripper and work down until achieving a clean strip of the insulation. z

Strip approximately 7.5 mm (0.313 in) of insulation from each wire to be spliced. z z

Do not nick or cut any of the strands. Inspect the stripped wire for nicks or cut strands.

If the wire is damaged, repeat this procedure after removing the damaged section.

4. Select the proper duraseal splice sleeve according to the wire size. Refer to the above table at the beginning of the repair procedure for the color coding of the duraseal splice sleeves and the crimp tool nests.

Fig. 15: Identifying Splice Crimp Tool Nests


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5. Use the Splice Crimp Tool from the J-38125 to crimp duraseal splice sleeve. In order to position the duraseal splice sleeve in the proper color nest of the Splice Crimp Tool, refer to the table at the beginning of this repair procedure. See Special Tools and Equipment .

Fig. 16: Identifying Durasteel Splice Sleeve


6. Place the duraseal splice sleeve in the nest. Ensure that the crimp falls midway between the end of the barrel and the stop. The sleeve has a stop (3) in the middle of the barrel (2) in order to prevent the wire (1) from going further. Close the hand crimper handles slightly in order to firmly hold the duraseal splice sleeve in the proper nest.

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Fig. 17: Crimped Duraseal Splice Sleeve


7. Insert the wire into the splice sleeve barrel until the wire hits the barrel stop.

8. Tightly close the handles of the crimp tool until the crimper handles open when released.

The crimper handles will not open until you apply the proper amount of pressure to the duraseal splice sleeve. Repeat steps 4 and 5 for the opposite end of the splice.

Fig. 18: Identifying Heated Splice Sleeve


9. Using the heat torch, apply heat to the crimped area of the barrel.

10. Gradually move the heat barrel to the open end of the tubing: z z

The tubing will shrink completely as the heat is moved along the insulation.

A small amount of sealant will come out of the end of the tubing when sufficient shrinkage is achieved.

SIR/SRS System Wire Splice Repair

Apply a new splice (not sealed) from the J-38125 if damage occurs to any of the original equipment splices (3 wires or more) in the SIR/SRS wiring harness. Carefully follow the instructions included in the kit for proper

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2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2 splice clip application. See Special Tools and Equipment .

Connector Position Assurance (CPA)

The connector position assurance (CPA) is a small plastic insert that fits through the locking tabs of all the

SIR/SRS system electrical connectors. The CPA ensures that the connector halves cannot vibrate apart. You must have the CPA in place in order to ensure good contact between the SIR/SRS mating terminals.

Terminal Position Assurance (TPA)

The terminal position assurance (TPA) insert resembles the plastic combs used in the control module connectors. The TPA keeps the terminal securely seated in the connector body. Do not remove the TPA from the connector body unless you remove a terminal for replacement.

CONNECTOR REPAIRS

The Connector Repairs section contains the following types of connector repair information. Using these elements together will make connector repair faster and easier: z z

Connector Position Assurance Locks

Terminal Position Assurance Locks z z

Push to Seat Connectors

Pull to Seat Connectors z z

Weather Pack Connectors

Repairing Connector Terminals

CONNECTOR POSITION ASSURANCE LOCKS

The connector position assurance (CPA) is a small plastic insert that fits through the locking tabs of the connector. CPAs are used in various connectors throughout the vehicle. CPAs are also used in all SIR system electrical connectors. The CPA ensures that the connector halves cannot vibrate apart. You must have the CPA in place in order to ensure good contact between the mating terminals, of the connector.

TERMINAL POSITION ASSURANCE LOCKS

The terminal position assurance (TPA) insert resembles the plastic combs used in the control module connectors. The TPA keeps the terminal securely seated in the connector body. Do not remove the TPA from the connector body unless you remove a terminal for replacement.

PUSH TO SEAT CONNECTORS

Terminal Removal

Follow the steps below in order to repair push to seat connectors.

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Fig. 19: Separating Weather Pack Connector Halves


1. Remove the terminal position assurance (TPA) device, the connector position assurance (CPA) device, and/or the secondary lock.

2. Separate the connector halves (1).

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Fig. 20: Removing Cable & Terminal From Connector


3. Use the proper pick or removal tool (1) in order to release the terminal.

4. Gently pull the cable and the terminal (2) out of the back of the connector.

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Fig. 21: Aligning Locking Device


5. Re-form the locking device if you are going to reuse the terminal (1).

6. To repair the terminal, refer to Terminal Repair.

Terminal Repair

1. Slip the cable seal away from the terminal.

2. Cut the wire as close to the terminal as possible.

3. Slip a new cable seal onto the wire.

4. Strip 5 mm (3/16 in) of insulation from the wire.

5. Crimp a new terminal to the wire.

6. Solder the crimp with rosin core solder.

7. Slide the cable seal toward the terminal.

8. Crimp the cable seal and the insulation.

9. If the connector is outside of the passenger compartment, apply grease to the connector.

Reinstalling Terminal

1. In order to reuse a terminal or lead assembly. Refer to Wiring Repairs .

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2. Ensure that the cable seal is kept on the terminal side of the splice.

3. Insert the lead from the back until it catches.

4. Install the TPA, CPA and/or the secondary locks.

PULL TO SEAT CONNECTORS

Terminal Removal

If the terminal is visibly damaged or is suspected of having a faulty connection, the terminal should be replaced.

Follow the steps below in order to repair pull-to-seat connectors:

Fig. 22: Aligning Removal Tool


1. Remove the connector position assurance (CPA) device and/or the secondary lock.

2. Disconnect the connector from the component or separate the connectors for in-line connectors.

3. Remove the terminal position assurance (TPA) device.

4. Insert the proper pick or removal tool into the front of the connector body.

IMPORTANT: On connectors with more than one terminal the service loop may not be large enough to remove the terminal and crimp on a new one. If the terminal wire does not have a large enough service loop for removal, cut the wire 5 cm (2 in) behind the connector before removal.

5. Grasp the wire at the back of the connector body and gently push the terminal (1) out the front of the

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2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2 connector body (3).

Terminal Repair

1. If the wire needed to be cut in order to remove the terminal, gently push a small length of the same size wire through the back of the connector cavity until there is enough wire exposed in order to crimp on a new terminal. If the wire was not cut, cut the existing wire as close to the old terminal as possible.


3. Crimp a new terminal to the wire.

4. Solder the crimp with rosin core solder.

Terminal Installation

1. Align the terminal and pull the wire from the back of the connector in order to seat the terminal.

2. If necessary, cut the new wire to proper length and splice with existing circuit. Refer to Splicing Copper

Wire Using Splice Sleeves .

3. If the connector is outside of the passenger compartment, apply dielectric grease to the connector.

4. Install the TPA, CPA and/or the secondary locks.

MICRO-PACK 100W CONNECTORS

Terminal Removal Procedure

1. Disconnect the connector from the component or separate the connector halves for in-line connectors.

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Fig. 23: Locating Nose Piece Locking Tabs


2. Locate the nose piece locking tabs that are positioned on the side of the connector nose piece.

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Fig. 24: Pushing In Locking Tabs


3. Use a small flat-bladed tool to push in one of the locking tabs while gently pushing on the same side of the nose piece.

4. Repeat the procedure for the other locking tab and remove the nose piece.

5. Remove the wire dress cover. The following is a general procedure for wire dress cover removal. Use this procedure as a guide, some dress cover removal procedures may vary.

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Fig. 25: Squeezing Cover Locking Legs


6. Use fingers to squeeze the 2 locking legs of the cover.

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Fig. 26: Unseating Locking Legs


7. Apply pressure and gently rock the cover until one locking leg is unseated.

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Fig. 27: Removing Wire Dress Cover


8. Continue to apply pressure and rock the cover until the second locking leg is unseated. Repeat procedure for the other side of the dress cover and remove the cover.

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Fig. 28: Lifting Terminal Retaining Tab


9. Use J 38125-12A tool to gently lift the terminal retaining tab while gently pulling the wire out of the back of the connector. Always remember never use force when pulling a terminal out of a connector. If the terminal is severely bent or damaged, push the wire out of the front of the connector instead of pulling it through. This will prevent damage to the internal seals of the connector. Once the terminal is pushed out of the connector, cut the wire as close to the terminal as possible and pull the wire through the connector.

Terminal Repair Procedure

Use the appropriate wire assembly kit available through Saturn Service Parts.

1. Slide the new terminal into the correct cavity at the back of the connector.

2. Push the terminal into the connector until it locks into place. The new terminal should be even with the other terminals. Insure that the terminal is locked in place by gently pulling on the wire.

3. Replace the nose piece.

4. Replace the dress cover.

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MICRO .64 CONNECTORS

Tools Required


Terminal Removal Procedure

Follow the steps below in order to remove terminals from Micro 64 connectors.

Fig. 29: Disengaging Lever Lock


1. Locate the lever lock on the wire dress cover. While depressing the lock, pull the lever over and past the lock.

2. Disconnect the connector from the component.

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Fig. 30: Releasing Locking Tabs


3. Locate the dress cover locking tabs at the front of the connector. Using a small flat-blade tool push down on one of the locking tabs and pull the cover up until the dress cover releases. Repeat this procedure for the other locking tab.

4. Once the front 2 locks are unlocked, lift the front of the dress cover and pull it forward.

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Fig. 31: Removing Nose Piece


5. If the connector has a nose piece, use a small flat-blade tool to remove the nose piece by inserting the blade into the slot on the front of the connector and prying up on the nose piece.

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Fig. 32: Removing Terminal Position Assurance


IMPORTANT: Always use care when removing a terminal position assurance (TPA) in order to avoid damaging it.

6. Remove the TPA by inserting a small flat-blade tool into the small slot on the TPA and pushing down until the TPA releases. Gently pry the TPA out of the connector.

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Fig. 33: Inserting J 38125-13A Into Terminal Cavities Canal


IMPORTANT: Be careful not to angle or rock the J 38125-13A tool when inserting it into the connector or the tool may break.

7. Insert the J 38125-13A (GM P/N 12031876-1) tool into the round canal between the terminals cavities at the front of the connector. See the release tool cross reference in the Reference Guide of the Terminal

Repair Kit to ensure that the correct release tool is used.

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Fig. 34: Removing Wire From Back Of Connector


8. While holding the removal tool in place, gently pull the wire out of the back of the connector. Always remember never use force when pulling a terminal out of a connector.

Terminal Repair Procedure

Follow the steps below in order to repair Micro 64 connector terminals.

The Micro 64 connectors have small terminals that are difficult to handle and hold when crimping. In order to aid the technician when crimping these terminals, a new crimping tool was developed. The J 38125-64 (M jaw) was developed to crimp Micro 64 terminals. The J 38125-64 crimping tool has a terminal holding block that will hold the terminal in place while the terminal is being crimped. The J 38125-64 crimping tool is also designed to crimp both the wire and the insulation at the same time.

After the terminal is removed from the connector perform the following procedure in order to repair Micro 64 terminals.

IMPORTANT: After cutting the damaged terminal from the wire, determine if the remaining

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wire is long enough to reach the connector without putting a strain on the wire.

If the wire is not long enough, splice a small length of the same gauge wire to the existing wire, then crimp the new terminal on the added wire.

1. Cut the wire as close to the damaged terminal as possible.


Fig. 35: Identifying Crimping Tool Spring Loaded Locator


3. Depress the spring loaded locator of the crimping tool until the terminal holder is completely visible.

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Fig. 36: Inserting Terminal Into Terminal Holder


4. Insert terminal into the appropriate terminal holder until it hits bottom and stops. The correct terminal holder is determined by the wire size. Also ensure that the terminals wings are pointing towards the former on the tool and the release locator.

5. Insert the stripped cable into the terminal. Insulation should be visible on both sides of the terminal insulation wings.

6. Compress the handles until the ratchet automatically releases.

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7. Place the terminal into the appropriate cavity and assemble the connector.

WEATHER PACK CONNECTORS

The following is the proper procedure for the repair of Weather Pack(R) Connectors.

Fig. 37: Separating Weather Pack Connector Halves


1. Separate the connector halves (1).

2. Open the secondary lock. A secondary lock aids in terminal retention and is usually molded to the connector (1).

3. Grasp the wire and push the terminal to the forward most position. Hold the wire in this position.

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Fig. 38: Removing Cable & Terminal From Connector


4. Insert the Weather Pack(R) terminal removal tool into the front (mating end) of the connector cavity until it rests on the cavity shoulder (1).

5. Gently pull on the wire to remove the terminal through the back of the connector (2).

IMPORTANT: Never use force to remove a terminal from a connector.

6. Inspect the terminal and connector for damage. Repair as necessary. Refer to Repairing Connector

Terminals .

7. Reform the lock tang (2) and reset terminal in connector body.

8. Close secondary locks and join connector halves.

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9. Verify that circuit is complete and working satisfactorily.

10. Perform system check.

REPAIRING CONNECTOR TERMINALS

Tools Required


Repairing Connector Terminals

Use the following repair procedures in order to repair the following: z z

Push to Seat terminals

Pull to Seat terminals

Some terminals do not require all of the steps shown. Skip the steps that do not apply for your terminal repair.

The J-38125 contains further information. See Special Tools and Equipment .

1. Cut off the terminal between the core and the insulation crimp. Minimize any wire loss.

For cable seal terminals, remove the seal.

2. Apply the correct cable seal per gauge size of the wire, if used.

Slide the seal back along the wire in order to enable insulation removal.

3. Remove the insulation.

4. For sealed terminals only, align the seal with the end of the cable insulation.

5. Position the strip in the terminal.

For sealed terminals, position the strip and seal in the terminal.

6. Hand crimp the core wings.

7. Hand crimp the insulation wings.

For sealed terminals, hand crimp the insulation wings around the seal and the cable.

8. Solder all of the hand crimp terminals excepting Micro-Pack 100 .64 size. Soldering Micro-Pack 100

World terminals may damage the terminal.

SCHEMATIC AND ROUTING DIAGRAMS

POWER AND GROUNDING SCHEMATIC ICONS

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Power and Grounding Schematic Icons

Icon Icon Definition

CAUTION:

When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and

Enabling Zones. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary

SIR system repairs.

POWER DISTRIBUTION SCHEMATICS

Fig. 39: B+ Bus Schematic


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Fig. 40: ACCY/RUN/START, RUN, and START Bus Bars, and CRANK Fuse Schematic


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Fig. 41: ACCY/RUN and RUN/START Bus Bars Schematic


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Fig. 42: STUD 1, STUD 2, VSES/ECAS, BLOWER, ABS, and MBEC 1 Fuses, RT DOORS and SEATS

Circuit Breakers Schematic


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Fig. 43: LBEC 1, LBEC 2, INFO, PDM, AUX PWR, DDM, LOCKS, TBC 2A, 2B, and 2C Fuses, and LT

DOORS Circuit Breaker Schematic


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2004 Hummer H2


Fig. 44: FLASH, LT TRLR, RT TRLR, LT TURN, and RT TURN Fuses Schematic


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2004 Hummer H2


Fig. 45: RR DEFOG, RR WPR, 4WS, STOP LP, VEH STOP, and VEH CHMSL Fuses Schematic


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2004 Hummer H2


Fig. 46: PCM B, TREC, IPC/DIC, TBC BATT, SEO B1, SEO B2, and HVAC/ECAS Fuses Schematic


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2004 Hummer H2


Fig. 47: CIG LTR, AUX PWR 1, SUNROOF, RADIO, RADIO AMP, and RR HVAC Fuses Schematic


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2004 Hummer H2


Fig. 48: TRL PARK, LR PARK, RR PARK, and FRT PARK Fuses Schematic


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2004 Hummer H2


Fig. 49: INT PARK Fuse Schematic


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2004 Hummer H2


Fig. 50: HORN, LO HDLP LT, LO HDLP RT, HI HDLP RT, and HI HDLP LT Fuses Schematic


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2004 Hummer H2


Fig. 51: B/U LP, O2A, O2B, TBC IGN1, TRL B/U, and BTSI Fuses Schematic


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2004 Hummer H2


Fig. 52: SEO IGN, SIR, and IGN E Fuses Schematic


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2004 Hummer H2


Fig. 53: ECT/ECM, PCM 1, INJ 1, and INJ 2 Fuses Schematic


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2004 Hummer H2


Fig. 54: WS WPR, SEO ACCY, RR WPR, TBC ACCY, TBC IGN 0, and IGN 0 Fuses Schematic


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2004 Hummer H2


Fig. 55: BRAKE, 4WD, CRUISE, HVAC 1, and IGN 3 Fuses Schematic


GROUND DISTRIBUTION SCHEMATICS

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2004 Hummer H2


Fig. 56: G100 Schematic


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2004 Hummer H2


Fig. 57: G102 and G103 Schematic


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2004 Hummer H2


Fig. 58: G104 and G106 Schematic


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2004 Hummer H2


Fig. 59: G200 Schematic


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2004 Hummer H2


Fig. 60: CKT 1050: S301 and S213 Schematic


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2004 Hummer H2


Fig. 61: CKT 1050: G203, S302, S303, S351, and S215 Schematic


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2004 Hummer H2


Fig. 62: G302, G304, and G306 Schematic


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2004 Hummer H2


Fig. 63: G308, G310, G401, and G300 Schematic


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2004 Hummer H2


Fig. 64: G402, G405, and G410 Schematic


HARNESS ROUTING COMPONENT VIEWS

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2004 Hummer H2


Fig. 65: Forward Lamp Harness Routing Component Views


Callouts For Fig. 65

Callout

1

2

3

Component Name

Washer Fluid Level Sensor Connector

Windshield Washer Fluid Pump Connector (Reversible)

Underhood Lamp Inline (If Equipped)

7

8

9

10

4

5

6

11

C103

Fuse Block - Underhood C4

Park/Turn Signal Lamp Connector - LF

Marker Lamp Connector - LF

Daytime Running Lamp (DRL) Connector - Left

G100

S101

Inflatable Restraint Front End Discriminating Sensor Connector - Left

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2004 Hummer H2


20

21

22

17

18

19

12

13

14

15

16

Inflatable Restraint Front End Discriminating Sensor Connector - Right

Horn Connector - Left

Headlamp Connector - Left

S100

Daytime Running Lamp (DRL) Connector - Right

Horn Connector - Right

Ambient Air Temperature Sensor Connector - HVAC

Ambient Air Temperature Sensor Connector - Mirror

Headlamp Connector - Right

Marker Lamp Connector - Right

Park/Turn Signal Lamp Connector - RF

Fig. 66: Forward Lamp Harness to Fuse Block - Underhood Component Views


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2004 Hummer H2



Callout

1

Component Name

Fuse Block - Underhood Center Block

2

3

4

5

Fuse Block - Underhood-C4 (GRN)

C103 - I/P Harness Side

Forward Lamp Harness

C103-Forward Lamp Harness Side

Fig. 67: Engine Harness Routing Component Views (6.0L)



Callout

1

2

Component Name

Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor Connector

A/C Low Pressure Switch Connector

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2004 Hummer H2


24

25

26

21

22

23

18

19

20

14

15

16

17

11

12

13

8

9

10

5

6

7

3

4

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Connector


Manifold Absolute Pressure (MAP) Sensor Connector

G103

G104

Camshaft Position (CMP) Sensor Connector

C175

Vehicle Speed Sensor (VSS) Connector


Park/Neutral Position (PNP) Switch Connector


S102

S103

S104

Throttle Actuator Control (TAC) Assembly Connector

C100


C106

G102

A/C Compressor Clutch Connector

Engine Oil Level Switch Connector

Crankshaft Position (CKP) Sensor Connector

A/C Refrigerant Pressure Sensor Connector

Coolant Level Switch Connector

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2004 Hummer H2


Fig. 68: I/P Harness Routing Component Views (1 of 2)



Callout

1

2

Component Name

Throttle Actuator Control (TAC) Module Connector - C2

C102 I/P to Chassis Harness

6

7

8

3

4

5

9

10



C100 I/P to Engine Harness

C103 I/P to Forward Lamp Harness





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2004 Hummer H2


19

20

21

16

17

18

22

23

24

25

11

12

13

14

15

Trailer Harness Feed

Windshield Wiper Motor and Module Connector

Instrument Panel Cluster (IPC) Connector

Air Temperature Sensor - Upper Right Connector

Ambient Light/Sunload Sensor Assembly Connector

Inflatable Restraint I/P Module Connector

Inflatable Restraint I/P Module Disable Switch Connector

I/P Compartment Lamp Connector

Speaker - RF Tweeter Connector

Junction Block - I/P

Courtesy Lamp - Right Footwell Connector

C298 I/P to Body Harness



G200

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2004 Hummer H2


Fig. 69: I/P Harness Routing Component Views (2 of 2)



Callout

1

2

3

Splice S217

Splice S210

Splice S211

7

8

9

4

5

6

10

Splice S212

Splice S213

Splice S214

Splice S216

Splice S215

Splice S290

Radio C1 Connector

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January-01-08 12:16:53 PM

Component Name


2004 Hummer H2


32

33

34

29

30

31

26

27

28

22

23

24

25

19

20

21

16

17

18

11

12

13

14

15

Radio C2 Connector

Longitudinal Accelerometer Connector

Inflatable Restraint I/P Module Disable Switch Connector

Vehicle Communication Interface Module (VCIM) Connectors

OnStar(R) Button Assembly Connector

Accessory Power Outlet/Cigar Lighter Connectors


Ride Height Switch Connector

Tow/Haul Switch Connector

Traction Control Switch Connector

Transfer Case Shift Control Switch C2 Connector

Transfer Case Shift Control Switch C1 Connector

Splice Pack SP205

Transfer Case Shift Control Module Connectors

C203 I/P to Steering Column Harness

Splice Pack SP206

C202 I/P to Steering Column Harness

Stop Lamp Switch Connector

C210 I/P to Headliner Harness

Relay Block I/P C1

Park Brake Switch Connector

Footwell Courtesy Lamp - Left

Data Link Connector (DLC)

Fuse Block - I/P C1

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2004 Hummer H2


Fig. 70: Body Harness Routing Component Views



Callout

1

2

3

Component Name

Speaker Right D Pillar Twiddler Connector

C420

S480

7

8

9

4

5

6

10

Splice Pack SP410

Door Lock Switch Rear Cargo Connector

Accessory Power Outlet - Rear Connector

Marker Lamp-RR Connector

Clearance Lamp - RR Connector

Speaker - Left D Pillar Twiddler Connector

S411

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2004 Hummer H2


32

33

34

29

30

31

26

27

28

22

23

24

25

35

36

37

38

19

20

21

16

17

18

11

12

13

14

15

Marker Lamp - LR Connector

S412

C312 (C69)

S307 (C69)

C320 (ZM6)

G302

C310

Courtesy Lamp Right B Pillar Connector

S390

Fuse Block - I/P C4

C325 (ZM6)

Inflatable Restraint Sensing and Diagnostic Module Connector

Splice Pack SP207

C200

C201

Relay Block - I/P C10

Body Control Module (BCM) - C6

Audio Amplifier Connectors

C355

C298

G304

C375


S310

Courtesy Lamp Left B Pillar Connector

C390

G306

C380

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2004 Hummer H2


Fig. 71: Chassis Harness Routing Component Views



Callout

1

Component Name

Wheel Speed Sensor (WSS) - RF Connector

2

3

4

Brake Fluid Level Switch Connector

C104

C105

8

9

10

5

6

7

C102

Electronically Controlled Air Suspension Relay (ZM6)

Wheel Speed Sensor (WSS) - LF Connector

C101

C106


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2004 Hummer H2


26

27

28

22

23

24

25

29

30

31

19

20

21

16

17

18

11

12

13

14

15


Stud 1

G300

S304

Electronic Brake Control Module (EBCM) Connector

Transfer Case Connector

Evaporative Emission (EVAP) Canister Vent Solenoid Connector

G310

G308

Air Suspension Sensor - RR Connector (ZM6)

S391

S392

Wheel Speed Sensor (WSS) - RR Connector

Air Suspension Inflator Switch Connector (ZM6)

G405

Junction Block - Rear C1

Trailer Connector

G402

Rear Differential Lock Actuator Connector

C450 (ZM6)

C451 (ZM6)

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2004 Hummer H2


Fig. 72: Roof Marker Harness Routing Component Views



Callout

1 Cellular Telephone Antenna

2

3

4

GPS Antenna

Clearance Lamp Connector - LF

Component Name

Roof Lamp Connector - Front Center

5

6

7

8

9


S345


Clearance Lamp Connector - RF

S303

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10

11

12

2004 Hummer H2


Radio Antenna

Antenna Preamplifier Connector

Junction Block - I/P C6

Fig. 73: Headliner Harness Routing Component Views



Callout

3

4

1

2

5

6

Sunroof Module Connector

Sunroof Switch Connector

Courtesy/Reading Lamp - Left Front Connector

Garage Door Opener Connector

Inside Rearview Mirror Connector

Component Name

Courtesy/Reading Lamp - Right Front Connector

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2004 Hummer H2


15

16

17

12

13

14

18

19

20

7

8

9

10

11

Noise Cancellation Microphone Connector

Vanity Mirror - Right Connector

Courtesy Reading Lamp - Center

Courtesy Reading Lamp - Rear

S300

Ambient Air Temperature Sensor Connector

Cellular Telephone Microphone Connector

S305

S301

S302 (CF5)

Sunroof Relay



C210

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2004 Hummer H2


Fig. 74: Liftgate Harness Routing Component Views



Callout

3

4

1

2

C420

Component Name

Roof Lamp - Right Rear Connector

C900

Roof Lamp - Center Connector

8

9

10

5

6

7

CHMSL

Roof Lamp - Left Rear Connector

Rear Window Defogger Grid - Left Connector

License Lamp Connector

Liftgate Ajar Switch - Left Connector

Door Lock Actuator - Liftgate Connector

14

15

16

11

12

13

17

Rear Window Wiper Motor Connector

License Lamp Connector

S902

Liftgate Ajar Switch - Right Connector

S901

Defogger Grid - Right Connector

S900

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2004 Hummer H2


Fig. 75: C100 Component Views



Callout

1

2

3

C100 - Engine Harness Side

C100 - IP Harness Side

Fuse Block - Underhood

Component Name

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2004 Hummer H2


Fig. 76: C101, C104 and C106 Component Views



Callout

1

2

3

4

5

6

Brake Fluid Level Switch

Fuse Block - Underhood - C9

Fuse Block - Underhood - C3

C101 - Chassis Harness Side



Component Name

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2004 Hummer H2





Callout

1

Component Name

Stud 2 - Trailer Lead Power Feed

2

3

4

5

Stud 1

Fuse Block - Underhood

IP Harness

C102

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2004 Hummer H2





Callout

1

2

3

Component Name

Fuse Block - Underhood Center Block


C103 - Forward Lamp Harness Side

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2004 Hummer H2


Fig. 79: C105 and C106 Component Views



Callout

1

Component Name

Fuse Block - Underhood Bracket

2

3

4

5

C106 - Chassis to Engine

Engine Harness

Chassis Harness

C105 - Chassis to I/P

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2004 Hummer H2





Callout

1

2

3

4

MAP Sensor

Knock Sensor Pigtail

C115-Knock Sensors Inline

Engine Harness

Component Name

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2004 Hummer H2





Callout

1

2

7

8

9

5

6

3

4

Helpmelearn

January-01-08 12:16:54 PM

Ignition Coil 7

Fuel Injector 7

Fuel Injector 5

Ignition Coil 5

Inline C148

Ignition Coil 3

Fuel Injector 3

Ignition Coil 1

Fuel Injector 1

Component Name


10

2004 Hummer H2


Engine Harness




Callout

1

2

3

4

5

6

7

8

9

Fuel Injector 2

Ignition Coil 2

Fuel Injector 4

Ignition Coil 4

C158 - Ignition Coil Inline

Fuel Injector 6

Ignition Coil 6

Ignition Coil 8

Fuel Injector 8

Component Name

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2004 Hummer H2





Callout

1

2

Automatic Transmission

C175

Component Name

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2004 Hummer H2


Fig. 84: C200, C201 and Splice Pack SP207 Component Views



Callout

1

2

3

4

C200

Splice Pack SP207

C201

Left Side Cowl Panel

Component Name

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2004 Hummer H2





Callout

1

2

3

Steering Column

C203

C202

Component Name

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2004 Hummer H2





Callout

1 C210 Headliner Harness Side

Component Name

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2004 Hummer H2





Callout

1

2

RH Cowl Panel

C298 - Body Harness Side

Component Name

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3

2004 Hummer H2



Fig. 88: C310 - LR Shown - RR Similar Component Views



Callout

1

2

3

4


C310 - LR Door Harness Side

Passthrough Grommet

B Pillar

Component Name

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2004 Hummer H2





Callout

1

2

3

4

Rear Seat Assembly

C320

C380

Body Harness

Component Name

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2004 Hummer H2


Fig. 90: C325 - Driver Shown - Passenger Similar Component Views



Callout

1

2

Driver Seat

C325 - Driver Seat Harness

Component Name

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2004 Hummer H2


Fig. 91: C325, C326, C327, C328, C329 and C330 - Driver Seat Inlines Component Views



Callout

1

2

3

C327

Seat Adjuster Switch - Driver

Memory Seat Module - C4

7

8

9

4

5

6


Component Name

Seat Bolster/Lumbar Switch - Driver

Seat Recline Motor - Driver

C325

C329

C330

10

11

12

13

C328

Seat Rear Vertical Motor - Driver

Seat Front Vertical Motor - Driver


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14

15

16

2004 Hummer H2



Seat Horizontal Motor - Driver

C326




Callout

3

4

1

2

5

6

Seat Bolster Motor - Driver

Seat Lumbar Motor - Driver

Heated Seat Element - Driver Cushion

C333

Seat Belt Switch Connector

Component Name

Heated Seat Element - Driver Cushion Connector

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2004 Hummer H2





Callout

1

2

3

4

5

6

7

Front Floor Console

I/P Harness


Audio Amplifier

C350 - Console Harness Side

Accessory Power Outlets - Rear

Rear Seat Audio (RSA)

Component Name

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2004 Hummer H2





Callout

1

2

3

4

C355

Body Harness

Audio Amplifier

Audio Amplifier Connectors

Component Name

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2004 Hummer H2


Fig. 95: C375, C376 and C377 Component Views



Callout

1

Component Name

Seat Horizontal Motor - Front Passenger

2 Seat Front Vertical Motor - Front Passenger

3

4

5

Seat Rear Vertical Motor - Front Passenger

C376

C377

6

7

8

9

C375

Seat Recline Motor - Front Passenger

Seat Bolster/Lumbar Switch - Front Passenger

Seat Adjuster Switch - Front Passenger

Helpmelearn


2004 Hummer H2





Callout

1

2

3

4 C378

Component Name

Seat Bolster Motor - Passenger

Seat Lumbar Motor - Passenger

Heated Seat Element - Passenger Cushion Connector

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2004 Hummer H2





Callout

1

2

3

4

5

6

RH B Pillar

C390

G306

Liftgate Relay

Courtesy Lamp - RH B Pillar

Body Harness

Component Name

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2004 Hummer H2





Callout

1

2

3

4

C420 - Liftgate Harness Side


Liftgate

Liftgate Harness

Component Name

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2004 Hummer H2





Callout

1

2

3

C451

C450


Component Name

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2004 Hummer H2





Callout

1

2

3

Liftgate Jumper Harness

C900

Liftgate

Component Name

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2004 Hummer H2


Fig. 101: Splice S100 Component Views



Callout

1

2

3

4

Forward Lamp Harness

Radiator Support

S100

Horn Connector

Component Name

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2004 Hummer H2





Callout

1

Component Name

Ambient Temperature Sensor - Mirror

2

3

Radiator Support

S101

Helpmelearn


2004 Hummer H2





Callout

1

2

3

4

MAP Sensor

Knock Sensor Pigtail

C115-Knock Sensors Inline

Engine Harness

Component Name

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2004 Hummer H2


Fig. 104: Splices S301, S302 and S305 Component Views



Callout

Helpmelearn

January-01-08 12:16:55 PM

Component Name


3

4

5

1

2

2004 Hummer H2


S302

S305

S301

Headliner Harness

Sunroof Relay

Fig. 105: S304 Component Views



Callout

1

2

3

4

S304

G300

Chassis Harness

Component Name

Electronically Controlled Air Suspension Relay

Helpmelearn


2004 Hummer H2


Fig. 106: Splice S303 and S345 Component Views



Callout

1 Clearance Lamp - LF

2

3

4

Roof Marker Lamp Harness

Clearance Lamp Connector - LF

Cell Phone/GPS Antenna

Component Name

5

6

7

8

9

Roof Lamp - Center Front


Splice S345


Splice S303

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2004 Hummer H2


Fig. 107: Splices S350 and S351 Component Views



Callout

1

2

3

4

Console Harness

Floor Shifter

S350

S351

Component Name

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2004 Hummer H2


Fig. 108: S391 and S392 Component Views



Callout

1

2

Component Name

Fuel Tank Pressure (FTP) Sensor Connector

Air Suspension Sensor Connector - RR

3

4

5

G308

S391

S392

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2004 Hummer H2


Fig. 109: Splices S900, S901 and S902 Component Views



Callout

1

2

3

Component Name

Center High Mounted Stop Lamp (CHMSL) Connector

Rear Window Defogger Grid Connector

Rear Window Defogger Grid Connector

8

9

10

6

7

4

5

Splice S900

Rear Window Wiper Module - w/Motor

Door Lock Actuator - Liftgate

Liftgate Ajar Switch - Left

Liftgate Ajar Switch - Right

Splice S902

Splice S901

Helpmelearn


2004 Hummer H2


REPAIR INSTRUCTIONS

RELAY REPLACEMENT (WITHIN AN ELECTRICAL CENTER)

Tools Required

J 43244 Relay Puller Pliers. See Special Tools and Equipment .

Removal Procedure

1. Remove the electrical center cover.

2. Locate the relay. Refer to Electrical Center Identification Views to locate the electrical center where the relay exists.

IMPORTANT:

z z

Always note the orientation of the relay.

Ensure that the electrical center is secure, as not to put added stress on the wires or terminals.

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2004 Hummer H2


Fig. 110: Removing Or Installing Relay In Electrical Center


3. Using the J 43244 (1) position the tool on opposing corners of the relay (2). See Special Tools and

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2004 Hummer H2


Equipment .

NOTE: Use J43244 to pull the relay straight out from the electrical center terminals. The use of pliers or a flat bladed tool could damage the electrical center.

4. Remove the relay (2) from the electrical center.

Installation Procedure

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2004 Hummer H2


Fig. 111: Removing Or Installing Relay In Electrical Center


1. Install the relay (2) in the same position as removed.

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2004 Hummer H2


2. Install the electrical center cover.

RELAY REPLACEMENT (ATTACHED TO WIRE HARNESS)


Fig. 112: Relay & Wire Harness Connector


1. Locate the relay. Refer to the Master Electrical Component List to locate the relay in the vehicle.

2. Remove any fasteners which hold the relay in place.

3. Remove any connector position assurance (CPA) devices or secondary locks.

IMPORTANT: Use care when removing a relay in a wiring harness when the relay is secured by fasteners or tape.

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2004 Hummer H2


4. Separate the relay (1) from the wire harness connector (2).


Fig. 113: Relay & Wire Harness Connector


1. Connect the relay (1) to the wire harness connector (2).

2. Install any connector position assurance (CPA) devices or secondary locks.

3. Install the relay using any fasteners or tape that originally held the relay in place.

UNDERHOOD ELECTRICAL CENTER OR JUNCTION BLOCK REPLACEMENT


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2004 Hummer H2


1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure

(Single Battery) in Engine Electrical.

Fig. 114: Left Fender Upper Brace


2. Remove the left fender upper brace.

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2004 Hummer H2


Fig. 115: Electrical Center Brace Cover Assemble


3. Remove the electrical center brace cover assemble by lifting the cover (3) outwards to clear the tabs.

4. Remove all fuses and relays.

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2004 Hummer H2


Fig. 116: Connectors & Electrical Center Block


5. Push on the tab (3) so that the electrical center can be rotated on the studs located at (2).

6. Remove all connectors by removing the bolt (1) for each connector.

7. Disconnect all connectors from the electrical center block.

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2004 Hummer H2


Fig. 117: Electrical Center & Housing


8. Push on the tabs (2) in order to lift the electrical center (1) out of the housing.

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2004 Hummer H2


Fig. 118: Engine Electrical Center Bracket Assembly


9. To replace the engine electrical center bracket remove the 4 retaining bolts (1).

10. Remove the engine electrical center bracket assembly from the fender.


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2004 Hummer H2


Fig. 119: Engine Electrical Center Bracket Assembly


1. Install the engine electrical center bracket assembly to the front fender.

NOTE: Refer to Fastener Notice in Cautions and Notices.

2. Install the 4 retaining bolts (1).

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2004 Hummer H2


Tighten: Tighten the 4 retaining bolts (1) to 9 N.m (80 lb in).

Fig. 120: Electrical Center & Housing


3. Align the electrical center block (1) stubs in the slots so that the tabs (2) retains it in place.

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2004 Hummer H2


Fig. 121: Connectors & Electrical Center Block


4. Connect the wire connectors to the lower portion of the electrical center block.

5. Connect the wire connectors with the bolts to the electrical center block.

Tighten: Tighten all connector bolts (1) to 9 N.m (80 lb in).

6. Ensure all wire connectors are securely connected.

7. Set the electrical center block in its resting position till the tabs (3) locks in place.

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2004 Hummer H2


Fig. 122: Electrical Center Brace Cover Assemble


8. Install the lower part of the cover (1).

9. With the cover (2) off, use the fuse location information to install all fuses and relays.

10. Install the cover.

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2004 Hummer H2


Fig. 123: Left Fender Upper Brace


11. Install the fender upper brace.

12. Install the 4 fender upper brace bolts.

Tighten: Tighten the 4 retaining bolts to 25 N.m (18 lb ft).

13. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure

(Single Battery) in Engine Electrical.

14. Start vehicle and ensure all components function properly.

INSTRUMENT PANEL ELECTRICAL CENTER OR JUNCTION BLOCK REPLACEMENT - LEFT


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2004 Hummer H2


Fig. 124: Left Side End Panel


1. Remove the left side end panel.

2. Remove the knee bolster. Refer to Trim Panel Replacement - Knee Bolster in Instrument Panel,

Gauges and Console.

3. Disconnect all the wiring connectors from the fuse block.

4. Remove all the fuses.

5. Remove the turn signal relay from the back of the fuse block.

6. From behind the fuse block, remove the retaining bolt.

7. Insert a screw driver between the fuse block and the wire harness block to separate.

8. Push on the retainers in order to remove the fuse block.

9. Remove the fuse block from the vehicle.


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2004 Hummer H2


1. Install the fuse block onto the IP assembly till it clicks in place.

2. Install the wire harness block to the back of the fuse block.


3. Install the bolt.

Tighten: Tighten the bolt to 6 N.m (53 lb in).

4. Install the turn signal relay to the back of the fuse block.

5. Using the wiring diagram on the cover of the fuse panel, install the fuses.

6. Install the electrical connectors.

7. Install the knee bolster. Refer to Trim Panel Replacement - Knee Bolster in Instrument Panel, Gauges and Console.

Fig. 125: Left Side End Panel

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2004 Hummer H2



8. Install the left side end panel.

INSTRUMENT PANEL ELECTRICAL CENTER OR JUNCTION BLOCK REPLACEMENT - RIGHT


1. Remove the right side end panel.

2. Push in the tabs in order to remove the fuse block.

Fig. 126: Fuse Block & I/P


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2004 Hummer H2


3. Pull out the fuse block out of the I/P in order to remove the retaining bolt.

4. Loosen the bolt.

5. Insert a screw driver between the wire harness block and fuse block in order to separate.

6. Separate the fuse block from the I/P harness block.

7. Remove the IP wiring harness block from the vehicle.


1. Install the fuse block to the I/P wire harness block.


2. Install the retaining bolt.

Tighten: Tighten the bolt to 6 N.m (53 lb in)

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2004 Hummer H2


Fig. 127: Fuse Block & I/P


3. Install the fuse block to the I/P till it clicks in place.

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2004 Hummer H2


Fig. 128: Connecting Wiring Connectors To Fuse Block


4. Connect the wiring connectors to the fuse block.

Refer to Electrical Center Identification Views to ensure the right connections are made.

5. Install the right side end panel.

SPECIAL TOOLS AND EQUIPMENT

SPECIAL TOOLS

Special Tools

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2004 Hummer H2


Illustration Tool Number/Description

J 25070

Heat Gun 500-700 F

J 35616

GM Terminal Test Kit

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January-01-08 12:16:56 PM

J 35616-200

Test Light - Probe Kit

J 36169-A

Fused Jumper Wire


2004 Hummer H2


J 38125

Terminal Repair Kit

J 38125-5

Ultra Torch

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January-01-08 12:16:56 PM

J 39200

Digital Multimeter


2004 Hummer H2


J 42675

Flat-Wire Probe Adapter

J 43244

Relay Puller Pliers

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connector end views

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