GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Switch Rear

Center of the dash right side of the radio

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

Ashtray Lamp

Above the engine cover, on top of the ashtray

Keyless Entry Component Views in Keyless Entry

Lighting Systems Connector End Views

Auxiliary Power Outlet #1 Front

On the lower right side of the engine cover

SIR Component Views in SIR

Power and Grounding Connector End Views in Wiring Systems

Auxiliary Power Outlet #2 Front

On the lower right side of the engine cover

SIR Component Views in SIR

Power and Grounding Connector End Views in Wiring Systems

Backup Lamp LH

On the bottom of the left side taillamp assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Backup Lamp RH

On the right side of the taillamp assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

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

Lighting Systems Component Views

Lighting Systems Connector End Views

Center High Mounted Stop Lamp Resistor

In the left side kick panel, 13.5 cm (5 5/16 in) from the park brake switch breakout forward the rear of the vehicle

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

Convenience Center

On the left of the I/P 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 of the seat belt assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Courtesy Lamp RH

On the right side of the seat belt assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Data Link Connector (DLC)

The lower left side of the dash

Data Link Communications Component Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

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 Module

On the left side of the dash, taped to the main harness

Keyless Entry Component Views in Keyless Entry

Lighting Systems Connector End Views

Daytime Running Lamp Relay

On the lower right side of the convenience center

Lighting Systems Component Views

Lighting Systems Connector End Views

Dome Lamp Center

In the center of the headline, 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 headlamps and the panel dimmer switch

Keyless Entry Component Views in Keyless Entry

Lighting Systems Connector End Views

Dome/Reading Lamps Center

In 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

Door Courtesy Lamp LH

On the left side door, below the arm rest

Lighting Systems Component Views

Lighting Systems Connector End Views

Door Courtesy Lamp RH

On the right side door, below the arm rest

Lighting Systems Component Views

Lighting Systems Connector End Views

Door Jamb Switch LH

On the left side of the A pillar

Lighting Systems Component Views

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Door Jamb Switch RH

On the right side of the A pillar

Power Door Systems Component Views in Doors

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Door Jamb Switch Rear

In the right rear of the vehicle

Entertainment Component Views in Entertainment

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Door Lock Control Module

The right front kick panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Electronic Brake Control Module (ECBM)

The left front side of the frame - to the left of the transmission

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

Headlamp and Panel Dimmer Switch

On the left side of the dash

Harness Routing Views in Wiring Systems

Lighting Systems Connector End Views

Headlamp Dimmer Switch

Mounted on the left side of the steering column

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--

Headlamp LH - High Beam

On the left front of the vehicle (inner bulb)

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp RH - High Beam

On the left front of the vehicle (inner bulb)

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp LH - Hi/Lo Beam

On the left front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp RH - Hi/Lo Beam

On the right front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp LH - Low Beam

On the left front of the vehicle (outer bulb)

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp RH - Low Beam

On the right front of the vehicle (outer bulb)

Lighting Systems Component Views

Lighting Systems Connector End Views

Heater Switch Rear

In the center of the dash, on the right side of the radio.

Heater Blower Controls Component Views in Heating and Ventilation (Non-A/C)

HVAC Connector End Views in HVAC Systems with A/C - Manual

HVAC Control Module

In the center of the dash

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

Ignition Switch

On the upper right side of the steering column

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

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

Instrument Cluster

On the left side of the dash

Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges and Console

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

Interior Lamp Control Module

On the lower side of the dash, mounted to the data link connector bracket

Data Link Communications Component Views in Wiring Systems

Lighting Systems Connector End Views

IP Compartment Lamp

In the center of the IP compartment, on the engine cover

--

Lighting Systems Connector End Views

IP Fuseblock

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

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

License Lamp

On the right rear door

Lighting Systems Component Views

Lighting Systems Connector End Views

Liftgate Strut Switch LH

On the left side of the liftgate

Lighting Systems Component Views

Lighting Systems Connector End Views

Outside Rearview Mirror Control Switch

On the left door at the upper side of the door panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

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 (RWD)

On the left center of the transmission

Harness Routing Views in Wiring Systems

Engine Controls Connector End Views in Engine Controls - 4.3L

Park/Neutral Position and Backup Lamp Switch (F4WD)

On the left center of the transmission

Harness Routing Views in Wiring Systems

Engine Controls Connector End Views in Engine Controls - 4.3L

Park/Turn Lamp LH Front

On the left front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Park/Turn Lamp RH Front

On the right front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Power Door Lock Switch LH Front

On the left front door at the upper side of the door panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Door Lock Switch RH Front

On the right front door at the upper side of the door panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Window Master Switch LH Front

On the left front door at the upper side of the door panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Window Switch RH Front

On the right front door at the upper side of the door panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Radio

In the center of the dash

HVAC Component Views in HVAC Systems with A/C - Manual

Entertainment Connector End Views in Entertainment

Radio Control Module Rear

On the left side of the vehicle behind the B pillar

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Remote CD Player

In the center of the dash

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Remote Control Door Lock Receiver

On the right side of the instrument cluster behind the air duct

Keyless Entry Component Views in Keyless Entry

Keyless Entry Connector End Views in Keyless Entry

Side Door Jamb Switch

In the center of the right B pillar

Lighting Systems Component Views

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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

On the right side seat belt assembly, at the B pillar

Lighting Systems Component Views

Lighting Systems Connector End Views

Sub-Woofer Amplifier

At the left center of the vehicle behind the trim panel

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

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

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Turn/Hazard Switch

On the top of the steering column

Cruise Control Component Views in Cruise Control

Lighting Systems Connector End Views

Underhood Fuse/Relay Center

At the left side front 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 side sun visor

Lighting Systems Component Views

Lighting Systems Connector End Views

Vanity Lamp RH

On the right side 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 with A/C - Manual

Wipers/Washer Connector End Views in Wipers/Washer System

C100

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

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200

In the left side 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 side 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

C209

In the convenience center

Electrical Center Identification Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C213

In the left side kick panel

Harness Routing 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 side kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C301

In the left side kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C401

In the top left side of the D pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

D300

In the lower side of the left B pillar

Lighting Systems Component Views

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P100

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

Harness Routing Views in Wiring Systems

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P400

In the lower half of the left side D pillar

Harness Routing Views in Wiring Systems

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P401

In the lower half of the right side D pillar

Harness Routing Views in Wiring Systems

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P500

In the lower half of the left side A pillar

Harness Routing Views in Wiring Systems

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P600

In the lower half of the right side A pillar

Harness Routing Views in Wiring Systems

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G100

On the right front radiator support, next to the engine coolant reservoir

Harness Routing Views in Wiring Systems

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G101

On the left front radiator support, below the main body ground

Power and Grounding Component Views in Wiring Systems

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G105

On the thermostat housing

Power and Grounding Component Views in Wiring Systems

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G107

On the left rear of the engine block, next to the knock sensor

Harness Routing Views in Wiring Systems

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G110

On the left side of the front of the dash, above the battery

Harness Routing Views in Wiring Systems

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G200

On the right front of the A pillar, above the right front door jamb switch

Harness Routing Views in Wiring Systems

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G400

On the upper half of the left side D pillar

Harness Routing Views in Wiring Systems

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G401

On the upper half of the right side D pillar

Power and Grounding Component Views in Wiring Systems

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S100

In the forward lamp harness, 8 cm (3 1/8 in) from the right side headlamp breakout, toward the left side of the vehicle

Harness Routing Views in Wiring Systems

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S101

In the forward lamp harness, 4 cm (1 9/16 in) from the right side turn/park lamp breakout, toward the left side of the vehicle

Harness Routing Views in Wiring Systems

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S102 (Early 98)

In the forward lamp harness, 4 cm (1 9/16 in) from the left side turn/park lamp breakout, toward the right side of the vehicle.

Harness Routing Views in Wiring Systems

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S102 (Late 98)

In the forward lamp harness, 24.5 cm (in) from the left side turn/park lamp breakout, toward P100

Harness Routing Views in Wiring Systems

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S103 (Early 98)

In the forward lamp harness, 4 cm (1.6 in.) from the left side turn/park lamp breakout toward P100

Harness Routing Views in Wiring Systems

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S103 (Late 98)

In the forward lamp harness, 11.5 cm (4 1/2 in) from the left side headlamp breakout, toward P100

Harness Routing Views in Wiring Systems

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S104

In the forward lamp harness, 11.5 cm (4 1/2 in) from the left side turn/park lamp breakout, toward P100

Harness Routing Views in Wiring Systems

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S105

In the forward lamp harness, 10.5 cm (4 1/8 in) from the left side headlamp breakout, toward the right side headlamp

Harness Routing Views in Wiring Systems

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S106 (Early 98)

In the forward lamp harness, 4 cm (1.6 in.) from the left side turn/park lamp breakout toward the right side headlamp

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--

S106 (Late 98)

In the forward lamp harness, 18 cm (in) from the left side headlamp breakout, toward P100

Harness Routing Views in Wiring Systems

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S117

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

Harness Routing Views in Wiring Systems

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S129

In the engine harness, 27.5 cm (10 13/16 in) from the electronic brake control module connectors breakout, toward C100

Harness Routing Views in Wiring Systems

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S135

In the front of the dash, 4 cm (1 9/16 in) from the forward lamp harness breakout, toward C102

Harness Routing Views in Wiring Systems

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S200

In the IP harness, 16 cm (6 5/8 in) from the IP fuse breakout, toward C100

Harness Routing Views in Wiring Systems

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S204

In the IP harness, 7 cm (2 3/4 in) from the C100 connector, toward the right side of the dash

Harness Routing Views in Wiring Systems

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S206

In the IP harness, 4.5 cm (1 3/4 in) from the C201 connector, toward C100

Harness Routing Views in Wiring Systems

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S207

In the IP harness, 7.5 cm (2 15/16 in) from the C201 connector breakout, toward the right side of the dash

Harness Routing Views in Wiring Systems

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S208

In the IP harness, 4 cm (1 9/16 in) from the C201 connector breakout, toward C201

Harness Routing Views in Wiring Systems

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S210

In the IP harness, 4.5 cm (1 9/16 in) from the C201 connector breakout, toward the right side of the dash

Harness Routing Views in Wiring Systems

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S211

In the IP harness, 6 cm (2 3/8 in) from the instrument cluster connector breakout, toward C100

Harness Routing Views in Wiring Systems

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S212

In the IP harness, 10.5 cm (4 1/8 in) from the C201 connector breakout, toward the right side of the dash

Harness Routing Views in Wiring Systems

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S213

In the IP harness, 4 cm (1 9/16 in) from the headlamp switch connector breakout, toward the headlamp

Harness Routing Views in Wiring Systems

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S214

In the IP harness, 10.5 cm (4 1/8 in) from the headlamp switch connector breakout, toward the headlamp

Harness Routing Views in Wiring Systems

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S215

In the IP harness, 17 cm (6 11/16 in) from the headlamp switch breakout, toward the switch connector

Harness Routing Views in Wiring Systems

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S216

In the IP harness, 9 cm (3 9/16 in) from the cluster breakout, toward the left side of the dash

Harness Routing Views in Wiring Systems

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S217

In the IP harness, 2.5 cm (1 in) from the instrument cluster connector breakout, toward the left side of the dash

Harness Routing Views in Wiring Systems

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S219

In the IP harness, 4 cm (1 9/16 in) from the instrument cluster connector breakout, toward the right side of the dash

Harness Routing Views in Wiring Systems

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S220

In the IP harness, 10.5 cm (4 1/8 in) from the instrument cluster connector breakout, toward the right side of the dash

Harness Routing Views in Wiring Systems

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S221

In the IP harness, 10 cm (3 15/16 in) from the headlamp switch connector breakout, toward the left side of the dash

Harness Routing Views in Wiring Systems

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S222

In the IP harness, 3.5 cm (1 3/8 in) from the headlamp switch connector breakout, toward the left side of the dash

Harness Routing Views in Wiring Systems

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S223

In the IP harness, 10.5 cm (4 1/8 in) from the headlamp switch connector breakout, toward the right side of the dash

Harness Routing Views in Wiring Systems

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S229

In the IP harness, 4 cm (1 9/16 in) from the temperature control motor connector breakout

Harness Routing Views in Wiring Systems

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S234

In the IP cowl harness, 16 cm (6 5/8 in) from the cigarette lighter breakout, toward the cigarette lighter

Harness Routing Views in Wiring Systems

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S236

In the vanity mirror harness, 7.5 cm (2 15/16 in) from the left side vanity mirror breakout, toward the right side vanity

Harness Routing Views in Wiring Systems

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S237

In the vanity mirror harness, 7.5 cm (2 15/16 in) from the left side vanity mirror breakout, toward the left side vanity mirror

Harness Routing Views in Wiring Systems

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S303

In the IP harness, 2.5 cm (1 in) from the temperature control motor breakout, toward the cluster

Harness Routing Views in Wiring Systems

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S306

In the left side kick panel, 13.5 cm (5 5/16 in) from the park brake switch breakout, toward C100

Harness Routing Views in Wiring Systems

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S307

In the roof of the vehicle, 10.5 cm (4 1/8 in) from the mid dome lamp breakout, toward the side door

Harness Routing Views in Wiring Systems

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S308

In the roof of the vehicle, 4 cm (1 9/16 in) from the mid dome lamp breakout, toward the side door

Harness Routing Views in Wiring Systems

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S315

In the body harness at the left side of the B pillar, 4 cm (1 9/16 in) from the breakout, toward the top of the vehicle

Harness Routing Views in Wiring Systems

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S319

In the left rear of the D pillar, 10 cm (3 15/16 in) from the G400 breakout, toward the top of the vehicle

Harness Routing Views in Wiring Systems

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S320

In the left rear of the D pillar, 46 cm (18 1/8 in) from the G400 breakout, toward the top of the vehicle

Harness Routing Views in Wiring Systems

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S321

In the rear top of the vehicle, 41 cm (16 1/8 in) from the center high mounted stop lamp breakout, toward the left side of the vehicle

Harness Routing Views in Wiring Systems

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S322

In the left side B pillar, 8.5 cm (3 3/8 in) from the daytime running lamp diode connector breakout, toward the rear of the vehicle

Harness Routing Views in Wiring Systems

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S325

In the left side kick panel, 4 cm (1 9/16 in) from the left side door jamb switch connector breakout, toward C100

Harness Routing Views in Wiring Systems

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S326

In the left side kick panel, 4 cm 1 9/16 (in) from the left side door jamb switch connector breakout, toward C100

Harness Routing Views in Wiring Systems

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S400

In the rear top of the vehicle, 12.5 cm (4 15/16 in) from the center high mounted stop lamp breakout, toward the left side of the vehicle

Harness Routing Views in Wiring Systems

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S401

In the right rear D pillar, 10.5 cm (4 1/8 in) from the right rear door breakout, toward the top of the vehicle

Harness Routing Views in Wiring Systems

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S402

In the right rear of the D pillar, 4 cm (1 9/16 in) from the right rear door breakout, toward the top of the vehicle

Harness Routing Views in Wiring Systems

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S403

In the right rear of the D pillar, 4.5 cm (1 9/16 in) from the right rear door breakout, toward P401

Harness Routing Views in Wiring Systems

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S503

In the left door harness, 6.5 cm (2 9/16 in) from the power window motor breakout, toward P500

Harness Routing Views in Wiring Systems

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S504

In the left door harness, 4 cm (1 9/16 in) from the power door lock switch connector breakout

Harness Routing Views in Wiring Systems

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S505

In the left door harness, 4 cm (1 9/16 in) from the power door lock switch connector breakout

Harness Routing Views in Wiring Systems

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S601

In the right door harness, 4 cm (1 9/16 in) from the power door lock switch connector breakout

Harness Routing Views in Wiring Systems

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S605

In the right door harness, 20.5 cm (8 1/16 in) from the power door lock switch connector breakout

Harness Routing Views in Wiring Systems

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