GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Ambient Light (DRL) Sensor

Center/Top of the Dash

Lighting Systems Component Views

Lighting Systems Connector End Views

Auxiliary Power Outlet #1 Front

On the lower RH side of the engine cover

Harness Routing Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Auxiliary Power Outlet #2 Front

On the lower RH side of the engine cover

Harness Routing Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Auxiliary Power Outlet Rear

In the left rear of the vehicle near the D pillar

Entertainment Component Views in Entertainment

Power and Grounding Connector End Views in Wiring Systems

Auxiliary Turn Signal Lamp LH (Japan)

Left front fender of vehicle

--

Lighting Systems Connector End Views

Auxiliary Turn Signal Lamp RH (Japan)

Right front fender of vehicle

--

Lighting Systems Connector End Views

Backup Lamp LH

In the bottom of the left tail lamp assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Backup Lamp RH

In the bottom of the right tail lamp assembly.

Lighting Systems Component Views

Lighting Systems Connector End Views

Body Control Module (BCM)

Inside the dash, above the radio

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Brake Pedal Position (BPP) Switch

Above the brake pedal

Lighting Systems Component Views

Lighting Systems Connector End Views

Center High Mounted Stop Lamp

In the top center, in the rear of the vehicle.

Harness Routing Views in Wiring Systems

Lighting Systems Connector End Views

Center High Mounted Stop Lamp (CHMSL) Resistor

In the left side kick panel, near the park brake switch breakout.

SIR Component Views in SIR

Lighting Systems Connector End Views

Cigar Lighter

Above the center of the engine cover

Entertainment Component Views in Entertainment

Power and Grounding Connector End Views in Wiring Systems

Compass and Temperature Display Module

On the front of the overhead console toward the front of the vehicle

Driver Information System Components Views in Instrument Panel, Gauges and Console

Driver Information Systems Connector End Views in Instrument Panel, Gauges and Console

Convenience Center

On the left of the IP fuse block by the left kick panel

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Courtesy Lamp LH

On the left side seat belt assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Courtesy Lamp LH Door

On the left side door, below the arm rest

Lighting Systems Component Views

Lighting Systems Connector End Views

Courtesy Lamp RH

In the right side seat belt assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Courtesy Lamp RH Door

On the right side door, below the arm rest.

Lighting Systems Component Views

Lighting Systems Connector End Views

Daytime Running Lamp (DRL) Diode (D300)

On the lower side of the left B pillar

Lighting Systems Component Views

Lighting Systems Connector End Views

Daytime Running Lamp (DRL) Relay

In Relay Block #2.

Data Link Communications Component Views in Data Link Communications

Electrical Center Identification Views in Wiring Systems

Dome Lamp Center

On the center of the headliner in the center of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Dome Lamp Defeat Switch

Part of the headlamp and the panel dimmer switch.

Lighting Systems Component Views

Lighting Systems Connector End Views

Dome Lamp Front

On the front center of the headliner

Lighting Systems Component Views

Lighting Systems Connector End Views

Dome Lamp Rear

In the rear center of the headliner

Lighting Systems Component Views

Lighting Systems Connector End Views

Dome Lamp Switch

Part of the headlamp and the panel dimmer switch

Lighting Systems Component Views

Lighting Systems Connector End Views

Dome/Reading Lamps Center

On the center of the headliner in the center of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Dome/Reading Lamps Front

On the front overhead console

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp Dimmer Switch

Mounted on the LH side of the steering column

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp LH High Beam (Composite)

On the left front of the vehicle (inner bulb)

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp LH HI/LO Beam (Sealed Beam)

On the left front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp LH Low Beam (Composite)

On the left front of the vehicle (outer bulb)

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp Relay

In the underhood fuse block

Data Link Communications Component Views in Data Link Communications

Electrical Center Identification Views in Wiring Systems

Headlamp RH High Beam (Composite)

On the right front of the vehicle (inner bulb)

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp RH HI/LO Beam (Sealed Beam)

On the right front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp RH Low Beam (Composite)

On the right front of the vehicle (outer bulb)

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp and Panel Dimmer Switch

On the left side of the dash

Keyless Entry Component Views in Keyless Entry

Lighting Systems Connector End Views

IP Compartment Lamp

In the center of the IP compartment on the engine cover

Lighting Systems Component Views

Lighting Systems Connector End Views

Ignition Switch

Inside the steering column

Steering Column Disassembled View in Steering Wheel and Column

--

Instrument Cluster

On the left of the dash

HVAC Component Views in HVAC Systems - Manual

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

Instrument Panel (IP) Fuse Block

On the lower left side of the dash, next to the left side kick panel

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Key-In Warning Buzzer Switch

Inside the steering column

Steering Column Disassembled View in Steering Wheel and Column

--

License Plate Lamp

In the right rear door

Lighting Systems Component Views

Lighting Systems Connector End Views

Overhead Console

On the front center of the headliner

Driver Information System Components Views in Instrument Panel, Gauges and Console

Driver Information Systems Connector End Views in Instrument Panel, Gauges and Console

Park Brake Indicator Switch

At the left front of the kick panel.

Harness Routing Views in Wiring Systems

Hydraulic Brake Connector End Views in Hydraulic Brakes

Park/Neutral Position and Backup Lamp Switch (A4WD)

In the left center of the transmission

Engine Electrical Component Views in Engine Electrical

Engine Controls Connector End Views in Engine Controls

Park/Neutral Position and Backup Lamp Switch (RWD)

In the left center of the transmission

Engine Electrical Component Views in Engine Electrical

Engine Controls Connector End Views in Engine Controls

Park/ Turn Signal Lamp - LF

In the left front side/ corner of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Park/Turn Signal Repeater Lamp - LF (Japan)

Left front of the vehicle

--

Lighting Systems Connector End Views

Park/Turn Signal Lamp - RF

In the right front side/corner of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Park/Turn Signal Repeater Lamp - RF (Japan)

Right front of the vehicle

--

Lighting Systems Connector End Views

Radio

In the center of the dash

HVAC Component Views in HVAC Systems - Manual

Entertainment Connector End Views in Entertainment

Radio Control Module Rear

In the left side of the vehicle behind the B pillar

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

RAP (Retained Accessory Power) Relay

In relay block 2

Data Link Communications Component Views in Data Link Communications

Electrical Center Identification Views in Wiring Systems

Relay Block 1

Under the dash next to the Data Link bracket

Data Link Communications Component Views in Data Link Communications

Electrical Center Identification Views in Wiring Systems

Relay Block 2

Under the dash next to the Data Link bracket

Data Link Communications Component Views in Data Link Communications

Electrical Center Identification Views in Wiring Systems

Remote CD Player

In the center of the dash below the radio

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Side Marker Lamp LH Front

On the left front of the vehicle.

Lighting Systems Component Views

Lighting Systems Connector End Views

Side Marker Lamp LH Rear

On the left rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Side Marker Lamp RH Front

On the right front of the vehicle.

Lighting Systems Component Views

Lighting Systems Connector End Views

Side Marker Lamp RH Rear

On the right rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Stepwell Lamp RH

In the right seat belt assembly at the B pillar

Lighting Systems Component Views

Lighting Systems Connector End Views

Subwoofer Amplifier

Between the left B and C pillar, behind the trim panel

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Tail/Stop Lamp LH (Japan)

In the left rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Tail/Stop Lamp RH (Japan)

In the right rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Tail/Stop Turn Lamp LH

On the left rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Tail/Stop Turn Lamp RH

On the right rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Turn/Hazard Flasher Module

In the convenience center

Electrical Center Identification Views in Wiring Systems

--

Turn/Hazard Switch

On the top of the steering column

Cruise Control Component Views in Cruise Control

--

Turn Signal Cancel Cam

On the top of the steering column, near the turn/hazard switch.

Steering Column Disassembled View in Steering Wheel and Column

--

Turn Signal Lamp LH Front (Japan)

In the left front of vehicle

--

Lighting Systems Connector End Views

Turn Signal Lamp LH Rear (Japan)

In the left rear of the vehicle

--

Lighting Systems Connector End Views

Turn Signal Lamp RH Front (Japan)

In the right front of vehicle

--

Lighting Systems Connector End Views

Turn Signal Lamp RH Rear (Japan)

In the right rear of the vehicle

--

Lighting Systems Connector End Views

Underhood Fuse Block (A4WD)

On the left side of the dash, near the battery

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Underhood Fuse Block (RWD)

On the left side of the dash, near the battery

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Vanity Lamp LH

On the left hand sun visor

Lighting Systems Component Views

Lighting Systems Connector End Views

Vanity Lamp RH

In the right hand sun visor

Lighting Systems Component Views

Lighting Systems Connector End Views

Window Wiper/Washer Switch Rear

In the center of the dash to the right side of the radio.

HVAC Component Views in HVAC Systems - Manual

Wiper/Washer Connector End Views in Wipers/Washer Systems

Windshield Wiper/Washer Switch Front

On the left side of the column at the turn signal lever.

Cruise Control Component Views in Cruise Control

Wiper/Washer Connector End Views in Wipers/Washer Systems

C100

In the left side front of the dash

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C102

In the left of the bulkhead, LH side front of dash.

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C104

In the engine harness 15 cm (5.9 in) from fuse block the relay breakout toward C100.

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C108 (Japan)

In the IP harness 47 cm (18.5 in) from C102 breakout

--

Inline Harness Connector End Views in Wiring Systems

C109

In the left of the bulkhead, LH side front of dash, next to C102

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C110 (Japan)

In the forward lamp harness 19 cm (7.5 in) from LH side marker and park/turn signal breakout

--

Inline Harness Connector End Views in Wiring Systems

C111 (Japan)

In the forward lamp harness 19 cm (7.5 in) from RH side marker and park/turn signal breakout

--

Inline Harness Connector End Views in Wiring Systems

C200

In the LH kick panel near C100

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201

In the lower half of the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C202

Under the engine cover, in the center of the dash

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C205

In the right kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C206

In the convenience center

Electrical Center Identification Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C207

In the convenience center

Electrical Center Identification Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C209

In the convenience center

Electrical Center Identification Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C218

In the convenience center

Electrical Center Identification Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C219

In the convenience center

Electrical Center Identification Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C300

In the left kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C301

In the left kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C401

At the top of the left D pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C403 (Japan)

Under the left rear side of the vehicle, at rear of fuel tank

--

Inline Harness Connector End Views in Wiring Systems

D300

At the bottom of the right B pillar near the seat belt retractor assembly

Harness Routing Views in Wiring Systems

Lighting Systems Connector End Views

G100

In the right front of the radiator support next to the engine coolant reservoir

Harness Routing Views in Wiring Systems

--

G101

In the left front radiator support below the main body ground

Power and Grounding Component Views in Wiring Systems

--

G105

In the thermostat housing

Power and Grounding Component Views in Wiring Systems

--

G107

In the left rear of the engine block next to the knock sensor

Harness Routing Views in Wiring Systems

--

G110

In the IP harness 32 cm (12.6 in) from C102 breakout next the battery

Harness Routing Views in Wiring Systems

--

G200

In the right front of the A pillar above the right front door jamb switch

Harness Routing Views in Wiring Systems

--

G400

In the upper half of the left D pillar

Harness Routing Views in Wiring Systems

--

G401

In the upper half of the right D pillar

Harness Routing Views in Wiring Systems

--

P100

In the left side front of the dash, on the left of the bulkhead

Harness Routing Views in Wiring Systems

--

P400

In the lower half of the left D pillar

Harness Routing Views in Wiring Systems

--

P401

In the lower half of the right D pillar

Harness Routing Views in Wiring Systems

--

P500

In the lower half of the left A pillar

Harness Routing Views in Wiring Systems

--

P600

In the lower half of the right A pillar

Harness Routing Views in Wiring Systems

--

S100

In the forward lamp harness 8 cm (3.1 in) from the right headlamp breakout toward the left side of the vehicle

Harness Routing Views in Wiring Systems

--

S101

In the forward lamp harness 4 cm (2 in) from the right parklamp breakout

Harness Routing Views in Wiring Systems

--

S102

In the forward lamp harness 4 cm (1.6 in) from the left headlamp breakout

Harness Routing Views in Wiring Systems

--

S103

In the forward lamp harness 3 cm (1.2 in) from the left headlamp breakout

Harness Routing Views in Wiring Systems

--

S104

In the forward lamp harness 17 cm (6.7 in) from the left park/turn lamp breakout

Harness Routing Views in Wiring Systems

--

S105

In the forward lamp harness 10.5 cm (4.1 in) from the left headlamp breakout

Harness Routing Views in Wiring Systems

--

S110

In the engine harness 24 cm (9.4 in) from the underhood fuse block breakout.

Harness Routing Views in Wiring Systems

--

S117

In the engine harness 2.5 cm (1 in) from the A/C low pressure cut-off switch breakout toward the engine

Harness Routing Views in Wiring Systems

--

S131

In the forward lamp harness 4 cm (1.6 in) from the left headlamp breakout.

Harness Routing Views in Wiring Systems

--

S133

In the engine harness 8 cm (3.1 in) from the underhood fuse block breakout.

Harness Routing Views in Wiring Systems

--

S200

In the IP harness 16 cm (6.3 in) from fuse block

Harness Routing Views in Wiring Systems

--

S204

In the IP harness 7 cm (2.8 in) from C100

Harness Routing Views in Wiring Systems

--

S206

In the IP harness 13 cm (5.1 in) from C100

Harness Routing Views in Wiring Systems

--

S210

In the IP harness 23.5 cm (9.3 in) from connector C100

Harness Routing Views in Wiring Systems

--

S211

In the IP harness 6 cm (2.4 in) from the instrument cluster breakout

Harness Routing Views in Wiring Systems

--

S212

In the IP harness 28 cm (11 in) from C100.

Harness Routing Views in Wiring Systems

--

S213

In the IP harness 41 cm (16.1 in) from the headlamp switch connector.

Harness Routing Views in Wiring Systems

--

S217

In the IP harness 2.5 cm (1 in) from the instrument cluster connector breakout.

Harness Routing Views in Wiring Systems

--

S219

In the IP harness 4 cm (1.6 in) form the instrument cluster connector breakout toward the right side of the dash

Harness Routing Views in Wiring Systems

--

S220

In the IP harness 6.5 cm (2.6 in) from the relay blocks breakout toward the relay blocks

Harness Routing Views in Wiring Systems

--

S221

In the IP harness 17 cm (6.7 in) from the instrument cluster connector breakout

Harness Routing Views in Wiring Systems

--

S222

In the I/P harness 23.5 cm (9.3 in) from the instrument cluster connector breakout

Harness Routing Views in Wiring Systems

--

S223

In the IP harness 10.5 cm (4.1 in) from the body control module (BCM) connectors breakout

Harness Routing Views in Wiring Systems

--

S229

In the I/P harness 4 cm (1.6 in) from the temperature control motor breakout toward the right side of the dash

Harness Routing Views in Wiring Systems

--

S234

In the I/P cowl harness 27.5 cm (10.8 in) from the cigar lighter connector

Harness Routing Views in Wiring Systems

--

S236

In the vanity mirror harness 7.5 cm (3 in) from the left vanity mirror breakout toward the right vanity

Harness Routing Views in Wiring Systems

--

S237

In the vanity mirror harness 7.5 cm (3 in) from the LH vanity mirror breakout toward the LH vanity mirror connector

Harness Routing Views in Wiring Systems

--

S247

In the I/P Harness 7.5 cm (3.1 in) from P100 toward the park brake switch.

Harness Routing Views in Wiring Systems

--

S250

In the IP harness 21 cm (8.3 in) from connector C201

Harness Routing Views in Wiring Systems

--

S254

In the IP harness 5 cm (2 in) from connector C201 breakout , away from C100

Harness Routing Views in Wiring Systems

--

S255

In the IP harness 23.5 cm (9.3 in) from connector C100

Harness Routing Views in Wiring Systems

--

S256

In the IP harness 34.5 cm (13.6 in) from the headlamp switch connector

Harness Routing Views in Wiring Systems

--

S257

In the IP harness 12.5 cm (4.9 in) from the instrument cluster connector breakout

Harness Routing Views in Wiring Systems

--

S258

In the IP harness 13 cm (5.1 in) from the radio connectors breakout

Harness Routing Views in Wiring Systems

--

S301

In the body harness 4 cm (1.6 in) from breakout for center dome lamp

Harness Routing Views in Wiring Systems

--

S303

In the I/P Harness 2.5 cm (9.8 in) from the convenience center near the park brake switch breakout

Harness Routing Views in Wiring Systems

--

S307

In the body harness 10.5  cm (4.1 in) from breakout for center dome lamp

Harness Routing Views in Wiring Systems

--

S315

In the body harness at the left B pillar 4 cm (1.6 in) from the breakout toward the top of the vehicle

Harness Routing Views in Wiring Systems

--

S319

In the body harness 10 cm (3.9 in) from G400 breakout toward P401

Harness Routing Views in Wiring Systems

--

S320

In the body harness 46 cm (18.1 in) from G400 breakout toward P401

Harness Routing Views in Wiring Systems

--

S321

In the body harness 55 cm (21.7 in) from G400 breakout toward P401

Harness Routing Views in Wiring Systems

--

S322

In the LH B pillar 4 cm (1.6 in) from the breakout toward the top of the vehicle

Harness Routing Views in Wiring Systems

--

S325

In the left kick panel 8 cm (3.1 in) from the left door jamb switch breakout toward C100

Harness Routing Views in Wiring Systems

--

S326

In the left kick panel 13 cm (5.1 in) from the left door jamb switch breakout toward C100

Harness Routing Views in Wiring Systems

--

S330

In the IP harness 18.5  cm (7.3 in) from the convenience center near the park brake switch breakout

Harness Routing Views in Wiring Systems

--

S400

In the body harness 12.5 cm (4.9 in) from center high mount stop lamp breakout

Harness Routing Views in Wiring Systems

--

S401

In the right rear D pillar 10.5 cm (4.1 in) from the right rear door breakout

Harness Routing Views in Wiring Systems

--

S402

In the right rear D pillar 4 cm (1.6 in) from the right rear door breakout

Harness Routing Views in Wiring Systems

--

S403

In the right rear D pillar 4.5 cm (1.8 in) from the right rear door breakout toward P401

Harness Routing Views in Wiring Systems

--

S503

In the left door harness 10.5 cm (4.1 in) from the power window switch connector breakout next to the outside rear view mirror

Harness Routing Views in Wiring Systems

--

S504

In the left door harness 4 cm (1.6 in) from the power door lock switch breakout toward P500

Power Door Systems Component Views in Doors

--

S601

In the right door harness 4 cm (1.6 in) from the power door lock switch breakout toward P600

Power Door Systems Component Views in Doors

--

S605

In the right door harness 17 cm (6.7 in) from the power window switch connectors next to outside rear view mirror connector breakout.

Harness Routing Views in Wiring Systems

--