GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Audio Alarm Module

Behind the RH instrument panel near the RH front speaker

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Backup Lamp Switch (Manual Transmission)

Mounted on the top of the transmission

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Cigar Lighter

Center of the instrument panel below the radio

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Combination Switch

On the steering column

Power and Grounding Component Views in Wiring Systems

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Cruise Control ON/OFF Switch

LH instrument panel to the right of the steering column

Cruise Control Component Views in Cruise Control

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Daytime Running Lamps (DRL) Control Module

Behind the instrument panel to the left of the steering column on the powertrain module mounting bracket

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Daytime Running Lamps (DRL) Diode

RH instrument panel taped to the main harness above the blower

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Dome Lamp Diode (2-door)

Taped to the floor harness near C407

Lighting Systems Component Views

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Dome Lamp Diode (4-door)

Taped to the floor harness near C407

Lighting Systems Component Views

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Fuse Block 1

RH engine compartment in front of the battery

Power and Grounding Component Views in Wiring Systems

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C1 (3 Cavities)

Main harness to fuse block 1 below fuse block 1

Power and Grounding Component Views in Wiring Systems

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Fuse Block 2

Under the LH instrument panel

Power and Grounding Component Views in Wiring Systems

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Generator

RH lower front of the engine

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Headlamp/ Dimmer Switch

LH steering column in the combination switch

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Headlamp Relay 1

RH instrument panel behind the instrument panel compartment in front of the blower motor

Lighting Systems Component Views

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Headlamp Relay 2

RH instrument panel behind the instrument panel compartment in front of the blower motor

Lighting Systems Component Views

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Illumination Controller

LH instrument panel to the left of the steering column

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Instrument Panel Cluster Assembly

LH instrument panel

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C1 (16 Terminals)

Instrument panel harness to the instrument panel cluster assembly behind the instrument panel cluster assembly

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

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C2 (10 Terminals)

Instrument panel harness to the instrument panel cluster assembly behind the instrument panel cluster assembly

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

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C3 (13 Terminals)

Instrument panel harness to the instrument panel cluster assembly behind the instrument panel cluster assembly

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

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LH Door Jamb Switch (2-Door)

Lower the LH B-Pillar

Lighting Systems Component Views

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LH Front Door Jamb Switch (4-Door)

Lower LH B-Pillar

Lighting Systems Component Views

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LH Rear Door Jamb Switch (4-Door)

LH C-Pillar above the wheelhousing

Lighting Systems Component Views

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Parking Brake Switch

In the center console to the left of the parking brake

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Park/ Neutral Position (PNP) Switch (3-Speed Automatic Transmission)

RH side of the transmission

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C2 (4 Cavities)

Engine harness to PNP switch on the RH side of the transmission

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Powertrain Control Module (PCM)

Under the LH instrument panel to the left of the steering column

Engine Controls Component Views in Engine Controls - 1.6L

Powertrain Control Module Connector End Views in Engine Controls - 1.6L

Power/ Normal Switch (4-Speed Automatic Transmission)

In the center console to the right of the manual selector lever

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Radio

Center of the instrument panel

Entertainment Component Views in Entertainment

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Rear Defogger Switch (4-Door)

LH instrument panel to the left of the steering column

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Rear Door Jamb Switch

LH bottom of the rear door jamb

Power Door Systems Component Views in Doors

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Rear Wiper/ Washer Switch (4-Door)

LH instrument panel to the right of the steering column

Power and Grounding Component Views in Wiring Systems

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RH Door Jamb Switch (2-Door)

Lower RH B-pillar

Power Door Systems Component Views in Doors

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RH Front Door Jamb Switch (4-Door)

Lower RH B-pillar

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RH Rear Door Jamb (4-Door)

RH C-pillar above the wheelhousing

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Stoplamp Switch

Under the LH instrument panel above the brake pedal

Lighting Systems Component Views

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Transmission Range Switch (4-Speed Automatic Transmission)

RH side of the transmission

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Turn/ Hazard Relay

Center instrument panel behind the blower speed selector

Lighting Systems Component Views

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C100 (16 Cavities)

Main harness to the engine harness mounted to the bracket on the bulkhead to the left of the front wiper motor

Harness Routing Views in Wiring Systems

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C101 (16 Cavities)

Main harness to the engine harness mounted to the bracket on the bulkhead to the left of the front wiper motor

Harness Routing Views in Wiring Systems

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C104 (6 Cavities) (Manual and 3-Speed Automatic Transmission)

Engine harness to the transmission harness, RH rear of the engine under the intake manifold

Harness Routing Views in Wiring Systems

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C104 (9 Cavities) (4-Speed Automatic Transmission)

Engine harness to the transmission harness, RH rear of the engine under the intake manifold

Harness Routing Views in Wiring Systems

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C106 (10 Cavities) (4-Speed Automatic Transmission)

Engine harness to the transmission harness, RH rear of the engine under the intake manifold

Harness Routing Views in Wiring Systems

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C200 (22 Cavities)

Main harness to the instrument panel harness, LH instrument panel near fuse block 2

Harness Routing Views in Wiring Systems

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C201 (16 Cavities)

Main harness to the instrument panel harness, LH instrument panel near fuse block 2

Harness Routing Views in Wiring Systems

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C211 (16 Cavities)

Instrument panel harness to the floor harness, RH instrument panel near the A-pillar

Harness Routing Views in Wiring Systems

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C213 (6 Cavities)

Instrument panel harness to the shift illumination

Harness Routing Views in Wiring Systems

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C215 (2 Cavities) (4-Door)

Main harness to the dome lamp harness, RH instrument panel near the A-pillar

Harness Routing Views in Wiring Systems

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C300 (2 Cavities) (2-Door)

Floor harness to the dome lamp harness behind the LH rear passenger compartment trim panel

Harness Routing Views in Wiring Systems

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C301 (6 Cavities) (2-Door)

Floor harness to the sub-floor harness behind the LH rear passenger compartment trim panel

Harness Routing Views in Wiring Systems

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C400 (12 Cavities)

Floor harness to the rear lamp harness behind the LH rear wheelhousing

Harness Routing Views in Wiring Systems

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C402 (6 Cavities)

Rear lamp harness to the RH rear combination lamp jumper harness behind the RH rear wheelhousing

Harness Routing Views in Wiring Systems

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C403 (2 Cavities) (2-Door)

Rear lamp harness to the rear door harness behind the RH rear wheelhousing

Harness Routing Views in Wiring Systems

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C404 (1 Cavity)

Rear lamp harness to the rear door harness behind the RH rear wheelhousing

Harness Routing Views in Wiring Systems

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C405 (2 Cavities) (4-Door)

Rear door harness to the center high mount stoplamp jumper harness inside the rear door to the left of the license plate lamp connector breakout

Harness Routing Views in Wiring Systems

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C405 (2 Cavities) (2-Door)

Rear door harness to the center high mount stoplamp jumper harness inside the center rear door

Harness Routing Views in Wiring Systems

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C406 (6 Cavities)

Floor harness to the LH rear combination lamp jumper harness behind the LH rear wheelhousing

Harness Routing Views in Wiring Systems

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C407 (6 Cavities)

Floor harness to the trailer option harness behind the LH rear wheelhousing

Harness Routing Views in Wiring Systems

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G100

LH front inner fender

Power and Grounding Component Views in Wiring Systems

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G104

RH front inner fender near the washer fluid reservoir

Power and Grounding Component Views in Wiring Systems

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G200

Behind the LH instrument panel above fuse block 2

Power and Grounding Component Views in Wiring Systems

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G201

Behind the RH instrument panel near the blower assembly

Power and Grounding Component Views in Wiring Systems

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G202

Behind the center instrument panel on the bulkhead

Power and Grounding Component Views in Wiring Systems

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G300 (4-Door)

LH rear passenger compartment behind the trim panel

Power and Grounding Component Views in Wiring Systems

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G300 (2-Door)

LH rear passenger compartment behind the trim plate

Power and Grounding Component Views in Wiring Systems

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G400 (4-Door)

Inside the rear door near the license plate lamps

Power and Grounding Component Views in Wiring Systems

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G400 (2-Door)

Inside the rear door near the license plate lamps

Power and Grounding Component Views in Wiring Systems

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G402 (2-Door)

Rear lamp harness behind the LH rear wheelhousing

Power and Grounding Component Views in Wiring Systems

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P200

LH rear engine compartment on the bulkhead near the brake master cylinder

Power and Grounding Component Views in Wiring Systems

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P201

RH rear engine compartment on the bulkhead near the battery

Power and Grounding Component Views in Wiring Systems

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P300 (2-Door)

LH A-pillar under the instrument panel behind the LH kick panel

Power and Grounding Component Views in Wiring Systems

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P400 (2-Door)

Rear door

Power and Grounding Component Views in Wiring Systems

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P400 (4-Door)

Rear door

Power and Grounding Component Views in Wiring Systems

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P401

Rear of the vehicle to the right of the LH frame rail

Power and Grounding Component Views in Wiring Systems

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P402

Rear of the vehicle to the left of the RH frame rail

Power and Grounding Component Views in Wiring Systems

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S103

Main harness approximately 8 cm (3.14 in) from the right horn connectors breakout

Harness Routing Views in Wiring Systems

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S115

Main harness approximately 10 cm (3.93 in) from the evaporative canister vent control valve

Harness Routing Views in Wiring Systems

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S116

Main harness approximately 14 cm (5.51 in) from the LH bulkhead branch breakout

Harness Routing Views in Wiring Systems

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S120

Main harness approximately 15 cm (5.90 in) from the G100 breakout

Harness Routing Views in Wiring Systems

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S140

Main harness approximately 6 cm (2.36 in) from the noise suppressor filter connector breakout

Harness Routing Views in Wiring Systems

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S204

Instrument panel harness approximately 8 cm (3.14 in) from the C211 breakout

Harness Routing Views in Wiring Systems

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S205

Instrument panel harness approximately 12 cm (4.72 in) from the cigar lighter breakout

Harness Routing Views in Wiring Systems

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S208

Main harness approximately 18 cm (7.08 in) from the ignition switch connector breakout

Harness Routing Views in Wiring Systems

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S210

Main harness approximately 12 cm (4.72 in) from the stoplamp switch connector breakout

Harness Routing Views in Wiring Systems

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S212

Main harness approximately 6 cm (2.36 in) from the blower speed selector switch connector breakout

Harness Routing Views in Wiring Systems

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S214

Main harness approximately 10 cm (3.93 in) from the C216 connector

Harness Routing Views in Wiring Systems

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S216

Main harness approximately 2 cm (0.78 in) from the stoplamp switch connector breakout

Harness Routing Views in Wiring Systems

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S220

Main harness approximately 1 cm (0.39 in) from the blower speed selector switch connector breakout

Harness Routing Views in Wiring Systems

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S221

Instrument panel harness approximately 12 cm (4.72 in) from the cigar lighter breakout

Harness Routing Views in Wiring Systems

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S222

Main harness approximately 10 cm (3.93 in) from the blower speed selector switch connector breakout

Harness Routing Views in Wiring Systems

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S225

Instrument panel harness approximately 12 cm (4.72 in) from the cigar lighter

Harness Routing Views in Wiring Systems

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S226

Instrument panel harness near the radio breakout

Harness Routing Views in Wiring Systems

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S227

Main harness approximately 8 cm (3.14 in) from the stoplamp switch connector breakout

Harness Routing Views in Wiring Systems

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S229

Main harness approximately 7 cm (2.75 in) from the ignition switch connector breakout

Harness Routing Views in Wiring Systems

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S230

Main harness approximately 5 cm (1.96 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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S231

Main harness approximately 1 cm (0.39 in) from the blower speed selector switch connector breakout

Harness Routing Views in Wiring Systems

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S232

Main harness approximately 1 cm (0.39 in) from the G200 breakout

Harness Routing Views in Wiring Systems

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S241

Main harness approximately 8 cm (3.14 in) from the powertrain control module (PCM) connectors breakout

Harness Routing Views in Wiring Systems

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S243

Main harness approximately 17 cm (6.69 in) from the G216 breakout

Harness Routing Views in Wiring Systems

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S244

Main harness approximately 25 cm (9.84 in) from the ignition switch connector breakout

Harness Routing Views in Wiring Systems

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S246

Main harness approximately 14 cm (5.51 in) from the ignition switch connector breakout

Harness Routing Views in Wiring Systems

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S247

Main harness approximately 2 cm (0.78 in) from the C212 breakout

Harness Routing Views in Wiring Systems

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S250

Main harness approximately 5 cm (1.96 in) from the blower motor resistor connector breakout

Harness Routing Views in Wiring Systems

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S251

Main harness approximately 5 cm (1.96 in) from the stoplamp switch connector breakout

Harness Routing Views in Wiring Systems

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S254

Main harness approximately 10 cm (3.93 in) from the G200 breakout

Harness Routing Views in Wiring Systems

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S255

Main harness approximately 16 cm (6.29 in) from the ignition switch connector breakout

Harness Routing Views in Wiring Systems

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S256

Instrument panel harness approximately 3 cm (1.18 in) from the power mirror switch connector breakout

Harness Routing Views in Wiring Systems

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S257

Main harness approximately 1 cm (0.39 in) from the stoplamp switch connector breakout

Harness Routing Views in Wiring Systems

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S258

Instrument panel harness approximately 2 cm (0.78 in) from the power mirror switch connector breakout

Harness Routing Views in Wiring Systems

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S260

Main harness approximately 4 cm (1.57 in) from the stoplamp switch connector breakout

Harness Routing Views in Wiring Systems

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S262

Main harness approximately 8 cm (3.14 in) from the stoplamp switch connector breakout

Harness Routing Views in Wiring Systems

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S263 (4-Speed Automatic Transmission)

In the manual selector lever harness

Harness Routing Views in Wiring Systems

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S265 (4-Speed Automatic Transmission)

In the manual selector lever harness

Harness Routing Views in Wiring Systems

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S272

Main harness approximately 11 cm (4.33 in) from the G200 breakout

Harness Routing Views in Wiring Systems

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S275

Main harness approximately 11 cm (4.33 in) from the ignition switch connector breakout

Harness Routing Views in Wiring Systems

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S276

Main harness approximately 1 cm (0.39 in) from the G200 breakout

Harness Routing Views in Wiring Systems

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S282

Main harness near G200 breakout

Harness Routing Views in Wiring Systems

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S283

Main harness approximately 8 cm (3.14 in) from the daytime running lamps (DRL) control module connector breakout

Harness Routing Views in Wiring Systems

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S296

Main harness approximately 6 cm (2.36 in) from the stoplamp switch connector breakout

Harness Routing Views in Wiring Systems

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S297

Main harness approximately 5 cm (1.96 in) from the daytime running lamps (DRL) diode connector breakout

Harness Routing Views in Wiring Systems

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S300 (2-Door)

Floor harness approximately 10 cm (3.93 in) from the LH rear speaker connector breakout

Harness Routing Views in Wiring Systems

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S301 (2-Door)

Sub-floor harness near the seat belt switch connector breakout

Harness Routing Views in Wiring Systems

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S304 (2-Door)

Floor harness approximately 5 cm (1.96 in) from the LH rear speaker connector breakout

Harness Routing Views in Wiring Systems

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S306 (2-Door)

Floor harness approximately 20 cm (7.87 in) from the LH rear speaker connector breakout

Harness Routing Views in Wiring Systems

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S400

Rear door harness near G400 breakout

Harness Routing Views in Wiring Systems

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S401

Rear lamp harness, near LH rear combination lamp

Harness Routing Views in Wiring Systems

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S402

Rear lamp harness, near RH rear combination lamp

Harness Routing Views in Wiring Systems

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S403

Rear lamp harness near the RH rear combination lamp

Harness Routing Views in Wiring Systems

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S404 (2-Door)

Floor harness approximately 4 cm (1.57 in) from the C406 breakout

Harness Routing Views in Wiring Systems

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S404 (4-Door)

Floor harness approximately 4 cm (1.57 in) from the LH rear speaker connector breakout

Harness Routing Views in Wiring Systems

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S405

Floor harness approximately 4 cm (1.57 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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S406 (4-Door)

Floor harness approximately 4 cm (1.57 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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S407

Rear door harness near the license plate lamps

Harness Routing Views in Wiring Systems

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S408

Rear lamp harness near the LH rear combination lamp

Harness Routing Views in Wiring Systems

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S409 (2-Door)

Floor harness approximately 5 cm (1.96 in) from the C406 breakout

Harness Routing Views in Wiring Systems

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S409 (4-Door)

Floor harness approximately 30 cm (11.81 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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S410

Rear door harness near the license plate lamps

Harness Routing Views in Wiring Systems

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S411 (2-Door)

Floor harness approximately 2 cm (0.78 in) from the C406 breakout

Harness Routing Views in Wiring Systems

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S411 (4-Door)

Floor harness approximately 2 cm (0.78 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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S412 (4-Door)

Floor harness approximately 42 cm (16.53 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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S413 (2-Door)

Floor harness approximately 10 cm (3.93 in) from the C406 breakout

Harness Routing Views in Wiring Systems

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S413 (4-Door)

Floor harness approximately 30 cm (11.81 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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S414

LH rear combination lamp jumper near the LH rear combination lamp

Harness Routing Views in Wiring Systems

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S415

RH rear combination lamp jumper near the RH rear combination lamp

Harness Routing Views in Wiring Systems

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S416

Rear lamp harness near the RH rear combination lamp connector breakout

Harness Routing Views in Wiring Systems

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S417

Floor harness 1 near the LH rear wheel housing

Harness Routing Views in Wiring Systems

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S418 (2-Door)

Floor harness approximately 3 cm (1.18 in) from the C406 breakout

Harness Routing Views in Wiring Systems

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S418 (4-Door)

Floor harness approximately 25 cm (9.84 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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S422 (4-Door)

Floor harness approximately 7 cm (2.75 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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S423 (4-Door)

Floor harness approximately 8 cm (3.14 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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S424 (4-Door)

Floor harness approximately 10 cm (3.93 in) from the C406 breakout

Harness Routing Views in Wiring Systems

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S426 (4-Door)

Floor harness approximately 20 cm (7.87 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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