GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Distributor

Top rear of the engine

Engine Controls Component Views in engine controls

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Engine Coolant Temperature (ECT) Sending Unit

RH side of the engine in the thermostat housing

Instrument Panel, Gages, and Console Component Views

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Fuel Level Sensor

In the fuel tank

Engine Controls Component Views in engine controls

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Fuse Block 2

Under the LH instrument panel

Power and Grounding Component Views in Wiring Systems

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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

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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

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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

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Noise Suppressor Filter

LH rear engine compartment below the front wiper motor

Engine Controls Component Views in engine controls

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Oil Pressure Switch

LH engine above the oil filter

Instrument Panel, Gages, and Console Component Views

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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

Powertrain Control Module Connector End Views in Engine controls

3-Speed Automatic and Manual Transmissions C1 (22 Cavities)

Main harness to the PCM, behind the instrument panel to the left of the steering column

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3-Speed Automatic and Manual Transmissions C2 (16 Cavities)

Main harness to the PCM, behind the instrument panel to the left of the steering column

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3-Speed Automatic and Manual Transmissions C3 (26 Cavities)

Main harness to the PCM, behind the instrument panel to the left of the steering column

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4-Speed Automatic and Manual Transmissions C1 (22 Cavities)

Main harness to the PCM, behind the instrument panel to the left of the steering column

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4-Speed Automatic and Manual Transmissions C2 (12 Cavities)

Main harness to the PCM, behind the instrument panel to the left of the steering column

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--

4-Speed Automatic and Manual Transmissions C3 (16 Cavities)

Main harness to the PCM, behind the instrument panel to the left of the steering column

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4-Speed Automatic and Manual Transmissions C4 (26 Cavities)

Main harness to the PCM, behind the instrument panel to the left of the steering column

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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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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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C202 (22 Cavities)

Main harness to the floor harness, LH instrument panel near G200

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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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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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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G101

On the bulkhead behind the distributor

Power and Grounding Component Views in Wiring Systems

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G102

RH rear of the engine near the distributor

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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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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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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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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S106

Main harness, approximately 10 cm (3.93 in) from the noise suppressor filter connector breakout

Harness Routing Views in Wiring Systems

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S130

Main harness approximately 20 cm (7.87 in) from the noise suppressor filter connector breakout

Harness Routing Views in Wiring Systems

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S132

Main harness approximately 7 cm (2.75 in) from the noise suppressor filter connector breakout

Harness Routing Views in Wiring Systems

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S204

Instrument panel harness near the C211 breakout

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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S230

Main harness approximately 5 cm (1.96 in) from the G300 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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S272

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

Harness Routing Views in Wiring Systems

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S305 (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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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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S419 (4-Door)

Floor harness approximately 50 cm (19.6 in) from the G300 breakout

Harness Routing Views in Wiring Systems

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