GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Ambient Light Sensor

At the top left of the IP

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Lighting Systems Connector End Views in Lighting Systems

Body Relay Block

To the right of the IP, near the IP Fuse Block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Body Control Module (BCM)

At the lower rear of the IP, on the heater

Body Control System Component Views in Body Control Systems

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Body Control Module (BCM) Connector C1, (24 Cavities)

At the lower rear of the IP, on the heater

Body Control System Component Views in Body Control Systems

Body Control System Connector End Views in Body Control System

Body Control Module (BCM) Connector C2, (24 Cavities)

At the lower rear of the IP, on the heater

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Body Control Module (BCM) Connector C3, (16 Cavities)

At the lower rear of the IP, on the heater

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Courtesy Lamp Relay

In the body relay block

Power and Grounding Component Views in Wiring Ssytems

Power and Grounding Connector End Views in Wiring Ssytems

Cruise Control Module (CCM)

At the right rear of the engine compartment, on the cowl

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

Data Link Connector (DLC)

To the lower right of the IP

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Door Handle Switch, LH

Part of the latch assemble

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Handle Switch, RH

Part of the latch assemble

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Jamb Switch, LH Rear

On the left B pillar

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Lighting Systems Connector End Views in Lighting Systems

Door Jamb Switch, RH Rear

On the right B pillar

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Lighting Systems Connector End Views in Lighting Systems

Door Lock Cylinder Switch, LH

Part of the latch assemble

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Cylinder Switch, RH

Part of the latch assemble

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Drivers Door Unlock Relay

In the body relay block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Door Lock Relay

In the body relay block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Door Unlock Relay

In the body relay block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Driver Information Display Module

At the front overhead, in the passenger compartment

Harness Routing Views in Wiring Systems

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Driver Information Display Module Connector C1 (6 Cavities)

At the lower center connector from the front

Harness Routing Views in Wiring Systems

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Flash To Pass Relay

In the rear of the engine compartment, on the cowl

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Fog Lamp Relay, Front

In the body relay block

Power and Grounding Component Views in Wiring Systems

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Fog Lamp Relay, Rear

In the underhood fuse block

Power and Grounding Component Views in Wiring Systems

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Fog Lamp Switch, Front

On the IP, right of the steering column near the IP dimmer switch

Power and Grounding Component Views in Wiring Systems

Lighting Systems Connector End Views in Lighting Systems

Fog Lamp Switch, Rear

On the IP, right of the steering column near the IP dimmer switch

Power and Grounding Component Views in Wiring Systems

Lighting Systems Connector End Views in Lighting Systems

Hazard Switch

Center of the IP, next to the radio

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Lighting Systems Connector End Views in Lighting Systems

Headlamp Grounding Relay

In the body harness, near the IP C203

Power and Grounding Component Views in Wiring Systems

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Headlamp, LH High Beam

The inner headlamp bulb

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Headlamp, RH High Beam

The inner headlamp bulb

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Headlamp, LH Low Beam

The outer headlamp bulb

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Headlamp, RH Low Beam

The outer headlamp bulb

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Headlamp Power Relay

In the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Headlamp Switch

At the base of the LH steering column control lever

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Horn, LH

In the left fenderwell

Harness Routing Views in Wiring Systems

Horn Connector End Views in Horns

Horn, RH

In the right fenderwell

Harness Routing Views in Wiring Systems

Horn Connector End Views in Horns

Horn Relay

In the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Horn Switch

Part of the steering column

Tilt Wheel/Column Component Views in Steering Wheel and Column-Tilt

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Ignition Key Alarm Switch

Part of the steering column at the ignition switch

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Inadvertent Power Lamp Relay

In the body relay block

Power and Grounding Component Views in Wiring Systems

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Inflatable Restraint Sensing and Diagnostic Module (SDM)

Between the left and right front seats, below the console

SIR Component Views in SIR

SIR Connector End Views in SIR

Instrument Cluster

In the IP, ahead of the steering column

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Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console

IP Dimmer Switch

On the IP, right of the steering column

Power and Grounding Component Views in Wiring Systems

Lighting Systems Connector End Views in Lighting Systems

IP Fuse Block

To the right of the IP, near the right front door jamb switch

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Multifunction Switch (T/SIG & HDLP HI/LO & HDLP ON/OFF & FTP)

On the right side of the steering column

Tilt Wheel/Column Component Views in Steering Wheel and Column - Tilt

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Park Brake Warning Switch

Part of the automatic transmission controller

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Hydraulic Brake Connector End Views in Hydraulic Brakes

Park Lamp Relay

In the body relay block

Power and Grounding Component Views in Wiring Systems

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Passlock Sensor

At the ignition switch, part of the lock module

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Radio

Center of the IP

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Entertainment Connector End Views in Entertainment

Rear Window Wiper Cutout and Liftglass Ajar Switch

In the endgate near the latch

Body Rear End Component Views in Body Rear End

Body Rear End Connector End Views in Body Rear End

Rear Wiper/Washer Switch And Endgate Window Release Switch

On the center console

Body Rear End Component Views in Body Rear End

Body Rear End Connector End Views in Body Rear End

Remote Control Door Lock Receiver (Japan)

On the right IP sound insulator

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Keyless Entry Connector End Views in Keyless Entry

Remote Control Door Lock Receiver (UK/S Africa)

Below the left IP, near the A pillar

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Keyless Entry Connector End Views in Keyless Entry

Retained Accessory Power Relay

In the body relay block

Power and Grounding Component Views in Wiring Systems

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Seat Belt Switch

Under the right seat

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Power Seat Connector End Views in Seats

Transfer Case Select Switch Connector C2 (4 Cavities)

At the front center of the IP, above the right of the radio

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Transfer Case Control Connector End Views in Transfer Case

Turn Signal Switch

Part of the steering column at the base of the RH control lever

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Underhood Fuse Block

On the top of the right inner wheelwell, near the battery

Power and Grounding Component Views in Wiring Systems

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Underhood Fuse Block Connector C1 (68 Cavities)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Fuse Block Connector C3 (32 Cavities)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Fuse Block Connector C4 (32 Cavities)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Fuse Block Connector C5 (2 Cavities)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Vehicle Control Module (VCM)

To the left of the engine compartment

Engine Controls Component Views in Engine Controls

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Vehicle Control Module (VCM) Connector C4 (24 Cavities)

To the left of the engine compartment

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

C106 (8 Cavities)

At the forward lamps to body harness, inside the right front fender near the underhood fuse block

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Inline Harness Connector End Views in Wiring Systems

C203 (116 Cavities)

At the body harness to IP harness, to the left of the IP

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Inline Harness Connector End Views in Wiring Systems

C209 (16 Cavities)

At the body harness to dome harness, at the left front of the IP

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Inline Harness Connector End Views in Wiring Systems

C211 (48 Cavities)

At the body harness to steering column harness, behind the IP, near the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C315 (6 Cavities)

At the body harness to right front power seat, under the right front seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C411 (2 Cavities)

At the body harness to endgate harness, rear left center of the body, at the endgate

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Inline Harness Connector End Views in Wiring Systems

C501 (22 Cavities)

At the body harness to left front door harness, near the P500

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C610 (22 Cavities)

At the body harness to right front door harness, near the P600

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

D101

Between the S228 and S229 splices

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G110

(CKT 150) At the body harness, to the left of the radiator support

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G111

(CKT 150) At the forward lamps harness, to the left of the radiator support

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G112

(CKT 250) At the forward lamps harness, to the right inside of the radiator support

Power and Grounding Component Views in Wiring Systems

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G200

(CKT 1850) At the body harness, to the left front of the IP

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G201

(CKT 1850) At the body harness, to the left front of the IP

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G202

(CKT 1850) At the body harness, to the left front of the IP

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G203

(CKT 1850) At the body harness, to the right of the IP

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G204

(CKT 1850) At the body harness, to the right of the IP

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G450

(CKT 1350) At the body harness, in the left rear body corner, near the tail lamp harness

Power and Grounding Component Views in Wiring Systems

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P100

At the IP bulkhead pass-through, to the right rear of the engine compartment, on the cowl

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P500

At the body harness to the left front door pass-through, between the body and the left front door

Harness Routing Views in Wiring Systems

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P600

At the body harness to right front door pass-through, between the body and the right front door

Harness Routing Views in Wiring Systems

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S111

(CKT 712) In the forward lamp harness between the breakouts to the LH side marker lamp connector and the LH headlamp high beam connector, 6.5 cm (2.6 in) from the LH side marker lamp connector breakout

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S117

(CKT 74) In the body harness, 26 cm (10.4 in) from the breakout to the windshield wiper motor connector, toward the underhood fuse block

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S119

(CKT 240) In the body harness, 13 cm (5.2 in) from the breakout to the windshield wiper motor connector, toward the underhood fuse block

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S122

(CKT 2234) In the body harness, 13 cm (5.2 in) from the breakout to the EBCM C1 connector, toward the C106 connector

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S124

(CKT 150) In the body harness, 20.5 cm (8.2 in) from the breakout to the cruise control module connector, toward the EBCM

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S201

(CKT 1807) At the body harness, 13 cm (5.2 in) from the BCM connector breakout toward C211

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S202

(CKT 1415) At the body harness, 19.5 cm (7.8 in) from the BCM connector breakout toward C211

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S204

(CKT 41) At the body harness, 45 cm (18.2 in) from the BCM connector breakout toward C211

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S205

(CKT 1220) At the IP harness, between the breakouts for the instrument cluster and BCM connector C3, 6.5 cm (2.6 in) from the breakout to the BCM connector

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S207

(CKT 817) At the body harness, 32 cm (12.6 in) from the BCM connector breakout toward C211

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S209

(CKT 1850) At the body harness, 6.5 cm (2.6 in) from the BCM connector breakout toward C211

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S210

(CKT 1140) At the body harness, 59.5 cm (23.8 in) from the BCM connector breakout toward the body relay block

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S211

(CKT 1850) At the body harness, 6.5 cm (2.6 in) from the G203, G204, and G205 ground breakout and the ground terminals

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S212

(CKT 1414) At the body harness, 26 cm (10.4 in) from the BCM connector breakout toward C211

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S214

(CKT 461) At the body harness, 4 cm (1.6 in) from the BCM connector breakout toward C203

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S221

(CKT 524) At the body harness, 4 cm (1.6 in) from the DLC breakout toward the body harness conduit opening

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S225

(CKT 1414) At the IP harness between the breakouts for the BCM C3 and the radio connector, 13 cm (5.2 in) from the BCM C3 breakout

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S226

(CKT 1415) At the IP harness between the breakouts for the BCM C3 and the radio connector, 6.5 cm (2.6 in) from the BCM C3 breakout

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S228

(CKT 103) At the body harness, 15 cm (6 in) from the breakout to the headlamp switch relay in the headlamp switch relay harness

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S229

(CKT 352) At the body harness, 15 cm (6 in) from the breakout to the headlamp switch relay in the headlamp switch relay harness

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S283

(CKT 2409) At the IP harness, between the breakouts to the BCM connector C3 and the cigar lighter connector C224, 6.5 cm (2.6 in) from the breakout to the BCM

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S320

(CKT 1350) In the RH power seat harness

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S427

(CKT 1350) At the left rear body harness, 7 cm (2.75 in) forward of the breakout to the left tail lamp connector C403

Power and Grounding Component Views in Wiring Systems

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S428

(CKT 34) At the left rear body harness, 19.5 cm (7.8 in) forward of the breakout to the left tail lamp connector C403

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S501

(CKT 1850) At the left door harness, between the breakouts for the door speaker connector and the door lock and side window switch connector, 5 cm (2 in) from the door lock and side window switch breakout

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S603

(CKT 1850) At the right door harness, between the breakouts for the outside rear view mirror connector C604 and the side window regulator motor C1, 9 cm (3.6 in) from the C604 breakout

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Splice Pack SP100

(CKT 150) At the forward lamp harness, to the left rear of the radiator support

Harness Routing Views in Wiring Systems

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Splice Pack SP101

(CKT 250) At the forward lamp harness, to the right inside of the radiator support

Harness Routing Views in Wiring Systems

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Splice Pack SP203

(CKT 1850) IP harness, on the IP, behind the ashtray

Harness Routing Views in Wiring Systems

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