GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

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

Electronic Traction/Suspension Control Switch

Center console, between the shifter and the storage compartment

Lighting Systems Component Views in Lighting Systems

Suspension Controls Connector End Views

Instrument Cluster

Top LH side of instrument panel, behind the steering wheel

Instrument Cluster and HUD Component Views in Instrument Panel Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Instrument Panel Compartment Lamp

In Instrument Panel compartment, top RH side

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

LF Electronic Suspension Position Sensor

LH front wheelhouse forward of the shock absorber

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LF Shock Absorber Solenoid

Bottom of the LF shock absorber

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LR Electronic Suspension Position Sensor

LH rear wheelhouse front of the control arm.

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LR Shock Absorber Solenoid

Bottom of the LR shock absorber

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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 Electronic Suspension Position Sensor

RH front wheelhouse forward of the shock absorber

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RF Shock Absorber Solenoid

Bottom of the RF shock absorber

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RR Electronic Suspension Position Sensor

RH rear wheelhouse front of the control arm.

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RR Shock Absorber Solenoid

Bottom of the RR shock absorber

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Star Connector #1

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

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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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C101 (3 cavities)

Transmission harness to LF electronic suspension position sensor, mounted on the engine above the lower control arm

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Inline Harness Connector End Views in Wiring Systems

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

C103 (2 cavities)

Transmission harness to LF shock absorber solenoid, mounted on the engine above the lower control arm

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Inline Harness Connector End Views in Wiring Systems

C104 (3 cavities)

Transmission harness to RF electronic suspension position sensor, mounted on the engine above the lower control arm

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Inline Harness Connector End Views in Wiring Systems

C106 (2 cavities)

Transmission harness to RF shock absorber solenoid, mounted on the engine above the lower control arm

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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

C142 (20 cavities)

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

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Inline Harness Connector End Views in Wiring Systems

C146 (10 cavities)

Transmission harness to instrument panel harness, RH side rear of 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

C401 (3 cavities)

Transmission harness to LR electronic suspension position sensor, mounted to the frame below the shock absorber

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Inline Harness Connector End Views in Wiring Systems

C403 (2 cavities)

Transmission harness to LR shock absorber solenoid, mounted to the frame below the shock absorber

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Inline Harness Connector End Views in Wiring Systems

C404 (3 cavities)

Transmission harness to RR electronic suspension position sensor, mounted to the frame below the shock absorber

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Inline Harness Connector End Views in Wiring Systems

C406 (2 cavities)

Transmission harness to RR shock absorber solenoid, mounted to the frame below the shock absorber

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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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S206

Instrument panel harness, approximately 5 cm (1.9 in) from the blower motor control module connector breakout (CKT 1132)

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G402

Transmission harness, rear of the vehicle, on the inner side of RH frame rail (CKT 1351 and CKT 1251)

Power and Grounding Component Views in Wiring Systems

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