GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

1st - 2nd Shift Solenoid Valve

Inside the automatic transmission

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2nd - 3rd Shift Solenoid Valve

Inside the automatic transmission

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3rd - 2nd Shift Solenoid Valve

Inside the automatic transmission

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Automatic Transmission

Rear of the vehicle, mounted to the front of the axle

Engine Controls Component Views in Engine Controls 5.7L

AT Inline Harness Connector End View in Automatic Transmission

Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch

Inside the automatic transmission

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Automatic Transmission Fluid Temperature (TFT) Sensor

Inside the automatic transmission

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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

Instrument Cluster

Top LH side of instrument panel, behind the steering wheel

Power and Grounding Component Views in Wiring Systems

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Park/Neutral Position (PNP) and Back Up Switch

LH side of the transmission

Engine Controls Component Views in Engine Controls 5.7L

Engine Controls Connector End Views in Engine Controls 5.7L

Powertrain Control Module (PCM)

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

Engine Controls Component Views in Engine Controls 5.7L

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Pressure Control Solenoid (PC Sol) Valve

Inside the transmission

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Torque Converter Clutch (TCC) / Cruise Brake Switch

Mounted on the bracket in front of the brake pedal

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Engine Controls Connector End Views in Engine Controls 5.7L

Torque Converter Clutch Pulse Width Modulation Valve (TCC PWM SOL)

Inside the automatic transmission

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Torque Converter Clutch Valve Solenoid (TCC SOL)

Inside the automatic transmission

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Underhood Electrical Center

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

Power and Grounding Component Views in Wiring Systems

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C140 (10 cavities)

Transmission harness to forward lamp harness, RH side in engine compartment

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C142 (20 cavities)

Engine harness to transmission harness, RH side rear of engine compartment

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C144 (20 cavities)

Engine harness to transmission harness, RH side rear of engine compartment

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C150 (10 cavities)

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

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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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S120

Engine harness, approximately 15.0 cm from the main harness in the branch leading to the Powertrain Control Module (PCM) connectors (CKT451)

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S204

Instrument panel harness, approximately 7.5 cm from the BEC connector C1 on breakout that goes across the vehicle (CKT 817)

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G106

Engine harness, RH side of the engine, above the starter

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