GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM)

RH footwell, mounted to the toe board, behind the carpet

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Body Control System Connector End Views in Body Control Systems

Brake Pressure Differential Switch (JL4)

Attached to the side of the side of the brake combination valve, left front of master cylinder

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Antilock Brake System Connector End Views in Antilock Brakes

Brake Pressure Sensor (JL4)

Attached to the side of the front of the brake combination valve, left front of master cylinder

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Antilock Brake System Connector End Views in Antilock Brakes

Brake Pressure Modulator Valve (BPMV)

Rear of the vehicle, behind the center of the axle

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Data Link Connector (DLC)

LH side of instrument panel, below the steering column

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Data Link Communications Connector End Views in Data Link Communications

Electronic Brake Traction Control Module (EBTCM)

Front LH side of the engine compartment, mounted on the frame rail

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Antilock Brake System Connector End Views in Antilock Brakes

Electronic Suspension Control (ESC) Module

Rear compartment, inside the LH storage compartment

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Suspension Controls Connector End Views in Real Time Damping

Electronic Traction/Suspension Control Switch

Center console, between the shifter and storage compartment

Lighting Systems Component Views in Lighting Systems

Suspension Controls Connector End Views in Real Time Damping

Instrument Cluster

Top LH side of instrument panel, behind the steering wheel

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

Instrument Panel Electrical Center

RH footwell, mounted on the toe board, behind the carpet

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Lateral Accelerometer

Mounted to the floor panel under the RH seat.

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Antilock Brake System Connector End Views in Antilock Brakes

LF Wheel Speed Sensor

LF wheel between steering knuckle and brake rotor

Antilock Brake System Component Views in Antilock Brakes Systems

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LR Wheel Speed Sensor

Rear LH wheel between steering knuckle and brake rotor

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Powertrain Control Module (PCM)

Behind the RF fender, between the wheelhouse and the dash panel, below the battery

Engine Controls Component Views in Engine Controls 5.7L

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RF Wheel Speed Sensor

Front RH wheel between steering knuckle and brake rotor

Antilock Brake System Component Views in Antilock Brakes Systems

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RR Wheel Speed Sensor

Rear RH wheel between steering knuckle and brake rotor

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Star Connector #1

Instrument panel harness, serial data, LH side of the Body Control Module (BCM)

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Steering Column Position Sensor

Base of the steering column, under the instrument panel

Steering Assist Component Views in Variable Effort Steering

Antilock Brake System Connector End Views in Antilock Brakes

Stoplamp Switch

Mounted on the bracket in front of the brake pedal

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Underhood Electrical Center

RH side of the engine compartment, between the wheelhouse and the dash panel, front of the battery

Engine Controls Component Views in Engine Controls 5.7L

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Variable Effort Steering Actuator

LH side of the steering gear

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YAW Rate Sensor (JL4)

Mounted to the lower left instrument panel support bracket, under the HVAC control head.

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Antilock Brake System Connector End Views in Antilock Brakes

C102 (20 cavities)

Instrument panel harness to forward lamp harness, RH side rear of engine compartment

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Inline Harness Connector End Views in Wiring Systems

C105 (2 cavities) (W/O F45)

Transmission harness to LF wheel speed sensor, mounted on the engine above the lower control arm

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Inline Harness Connector End Views in Wiring Systems

C105 (2 cavities) (F45)

Transmission harness to LF wheel speed sensor,

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Inline Harness Connector End Views in Wiring Systems

C107 (2 cavities)

Forward lamp harness to Magnasteer ® actuator, mounted to the center of the power steering rack

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Inline Harness Connector End Views in Wiring Systems

C108 (2 cavities) (W/O F45)

Transmission harness to RF wheel speed sensor, mounted on the engine above the lower control arm

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Inline Harness Connector End Views in Wiring Systems

C108 (2 cavities) (F45)

Transmission harness to RF wheel speed sensor,

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Inline Harness Connector End Views in Wiring Systems

C111 (1 Cavity)

Forward lamp harness to engine compartment near brake pressure modulator valve.

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Inline Harness Connector End Views in Wiring Systems

C140 (10 cavities)

Transmission harness to forward lamp harness, RH side in engine compartment, below the battery

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Inline Harness Connector End Views in Wiring Systems

C148 (10 cavities)

Transmission harness to forward lamp harness, RH side rear of engine compartment, below the battery

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Inline Harness Connector End Views in Wiring Systems

C150 (20 cavities)

Forward lamp harness to Engine harness, RH side rear of engine compartment, below the battery

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Inline Harness Connector End Views in Wiring Systems

P200

Instrument panel harness, RH side of Instrument panel on dash panel

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P401

Transmission harness, LH rear of vehicle

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S106

Forward lamp harness, approximately 12.5 cm (4.9 in) from the EBTCM connector breakout (CKT 556)

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S108

Forward lamp harness, approximately 6.0 cm (2.3 in) from EBTCM connector breakout (CKT 1056)

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S201 (CJ2)

Instrument panel harness, approximately 35.0 cm (13.7 in) from the HVAC control head connector (CKT1791)

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S308

Instrument panel harness, approximately 19.0 cm (7.4 in) from the yaw rate connector. (CKT 556)

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S310

Instrument panel harness, approximately 11.0 cm (4.3 in) from the yaw rate connector. (CKT 1056)

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SP101 - Splice Pack 101

Forward lamp harness, grounded to G101, at the LH headlamp opening door assembly connector breakout (CKT 150)

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G101

Forward lamp harness, on frame rail between LH headlamp opening assembly and generator. part of SP101 (CKT 150)

Power and Grounding Component Views in Wiring Systems

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G108

Forward lamp harness, below the battery tray on the frame rail (CKT 1251)

Power and Grounding Component Views in Wiring Systems

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G201

Instrument panel harness, at base of LH A-Pillar, ground for SP201 and SP203 (CKT150 and CKT 351)

Power and Grounding Component Views in Wiring Systems

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