GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM)

Mounted on the RH A-pillar, behind the trim panel

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Data Link Connector (DLC)

Attached to the I/P carrier, to the left of the steering column

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Data Link Communications Connector End Views in Data Link Communications

Electronic Brake/Traction Control Module (EBTCM)

LH front of the engine compartment, mounted to the lower rail

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

Engine Control Module (ECM)

LH front of the engine compartment, in the ECM housing

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Engine Coolant Temperature Gauge Sensor

Mounted in the coolant bridge

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Engine Oil Level Sensor

Lower RH front of the engine block

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Engine Oil Pressure Gauge Switch

Lower RH front of the engine block

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Front Disc Brake Pad Wear Sensor (LH)

Attached to the LH front brake caliper

Instrument Panel, Gages, and Console Component Views

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Front Disc Brake Pad Wear Sensor (RH)

Attached to the RH front brake caliper

Instrument Panel, Gages, and Console Component Views

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Fuel Sender

Underneath the rear of the vehicle, inside the fuel tank

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Fuel Sensor

Part of the fuel sender

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Fuse Block

Mounted to the I/P, lower LH side of the steering column

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Gauge Cluster

LH side of the I/P, just to the left and above the heater and A/C control

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Instrument Panel, Gages, and Console Connector End Views

Instrument Cluster

LH side of the I/P, above the steering column

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Instrument Panel, Gages, and Console Connector End Views

Multifunction Relay K134

Under the LH side of the I/P

Instrument Panel, Gages, and Console Component Views

Lighting Systems Connector End Views in Lighting Systems

C102 (brown connector)

I/P wiring harness to engine wiring harness, in the LH front of the engine compartment, just behind the battery

Wiper/Washer Component Views in Wipers/Washer System

Inline Harness Connector End Views in Wiring Systems

C105 (white connector)

I/P wiring harness to ECM wiring harness, in the LH front of the engine compartment, just behind the battery

Wiper/Washer Component Views in Wipers/Washer System

Inline Harness Connector End Views in Wiring Systems

C115

ECM wiring harness to the engine coolant temperature jumper harness, at rear center of the engine, below C112

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Inline Harness Connector End Views in Wiring Systems

C200A

I/P wiring harness to body wiring harness, at lower LH A-pillar

Power and Grounding Component Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200B

I/P wiring harness to body wiring harness, at lower LH A-pillar

Power and Grounding Component Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C400

Body wiring harness to fuel sender wiring harness, beneath the vehicle, near the front of the fuel tank

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Inline Harness Connector End Views in Wiring Systems

G103

Body and I/P wiring harnesses, located at the LH front of the engine compartment, underneath the battery tray

Wiper/Washer Component Views in Wipers/Washer System

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G400

Body wiring harness, in the lower LH corner of the rear compartment, near the LH stop/taillamp

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P103

Lower LH A-pillar, forward of G200

Power and Grounding Component Views in Wiring Systems

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P104

LH engine compartment, at the front of the ECM housing

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P110

Rear LH corner of the engine compartment

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S200

I/P wiring harness, approximately 14 cm (7 in) from P110, towards connector C200 branch break off

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S204

I/P wiring harness, approximately 16 cm (6 in) from P110, towards connector C200 branch break off

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S215

I/P wiring harness, approximately 18 cm (7 in) from cruise release switch and stoplamp switch branch break off, to the right of the DLC connector branch break off

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S222

I/P wiring harness, approximately 33 cm (13 in) from cruise release switch and stoplamp switch branch break off, near G201 branch break off

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S228

I/P wiring harness, approximately 8 cm (3 in) from cruise release switch and stoplamp switch branch break off, to the left of the DLC connector branch break off

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S229

I/P wiring harness, approximately 20 cm (8 in) from cruise release switch and stoplamp switch branch break off, to the right of the DLC connector branch break off

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S238

I/P wiring harness, approximately 18 cm (7 in) from cruise release switch and stoplamp switch branch break off, to the right of the DLC connector branch break off

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S248

I/P wiring harness, mounted in harness channel behind LH side of heater and A/C control, approximately 5 cm (2 in) from gauge cluster connector branch break off

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S251

I/P wiring harness, approximately 18 cm (7 in) from cruise release switch and stoplamp switch branch break off, to the right of the DLC connector branch break off

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S252

I/P wiring harness, approximately 14 cm (7 in) from P110, before the power steering control module and multifunction relay (K134) branch break offs

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S262

I/P wiring harness, approximately 9 cm (4 in) from cruise release switch and stoplamp switch branch break off, to the left of the DLC connector branch break off

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S267

Body wiring harness, approximately 23 cm (9  in) from C200, in cross-car portion of body harness center console area

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S400

Body wiring harness, approximately 15 cm (6  in) from G400 branch break off, towards C401 branch break off

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