GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Automatic Transmission

Under center of vehicle, attached to rear of engine

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Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch

Internal to transmission

Automatic Transmission Electronic Component Views in Automatic Transmission

Automatic Transmission Internal Connector End Views in Automatic Transmission

Clutch Pedal Position (CPP) Switch

On the clutch pedal support bracket

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

IP Fuse Block

To the right of the IP, near the right front door jamb switch

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Pressure Control Solenoid (PC SOL) Valve

Internal to transmission

Automatic Transmission Electronic Component Views in Automatic Transmission

Automatic Transmission Internal Connector End Views in Automatic Transmission

Shift Solenoid 1, 2, 3

Internal to transmission

Automatic Transmission Electronic Component Views in Automatic Transmission

Automatic Transmission Internal Connector End Views in Automatic Transmission

Torque Convertor Clutch Solenoid (TCC SOL) Valve

Internal to transmission

Automatic Transmission Electronic Component Views in Automatic Transmission

Automatic Transmission Internal Connector End Views in Automatic Transmission

Torque Convertor Clutch Pulse Width Modulation Solenoid (TCC PWM SOL) Valve

Internal to transmission

Automatic Transmission Electronic Component Views in Automatic Transmission

Automatic Transmission Internal Connector End Views in Automatic Transmission

Transmission Fluid Temperature (TFT) Sensor

Part of automatic transmission fluid pressure (TFP) manual valve position switch. Internal to transmission

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TCC/Stoplamp Switch

Mounted on the brake pedal support bracket

Engine Electrical Component Views in Engine Electrical

Automatic Transmission Inline Harness Connector End View in Automatic Transmission

Underhood Fuse Block

On the top of the right inner wheelwell near the battery

Power and Grounding Component Views in Wiring Systems

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Underhood Fuse Block Connector C1 (68 cavities)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Fuse Block Connector C2 (68 cavities)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Vehicle Control Module (VCM)

On the left side of the engine compartment

Engine Controls Component Views in Engine Controls

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Vehicle Control Module (VCM) Connector C1 (32 cavities)

On the left side of the engine compartment

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

Vehicle Control Module (VCM) Connector C2 (32 cavities)

On the left side of the engine compartment

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

Vehicle Control Module (VCM) Connector C3 (32 cavities)

On the left side of the engine compartment

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

Vehicle Control Module (VCM) Connector C4 (24 cavities)

On the left side of the engine compartment

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

Vehicle Speed Sensor (VSS)

Top LH rear of the transfer case

Transfer Case Control Component Views in Transfer Case

Automatic Transmission Inline Harness Connector End View in Transfer Case

C101 (8 cavities)

At the engine harness to body harness, to the left of the engine compartment, near the VCM

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Inline Harness Connector End Views in Wiring Systems

C175 (13 cavities)

At the engine harness to the right rear of the automatic transmission

Harness Routing Views in Wiring Systems

Automatic Transmission Inline Harness Connector End View in Automatic Transmission

C203 (116 cavities)

At the body harness to IP hraness, to the left of the IP

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Inline Harness Connector End Views in Wiring Systems

G104

(CKT 450) At the engine harness, to the right rear of the cylinder head

Power and Grounding Component Views in Wiring Systems

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P100

At the right rear of the engine compartment, on the cowl

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S102

(CKT 470) In the engine harness between the breakouts for the ignition control module and the fuel injector connector, 5 cm (2 in) from the fuel injector connector breakout

Engine Electrical Component Views in Engine Electrical

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S113

(CKT 1020) In the body harness between the breakouts to the power radio antenna connector and the underhood lamp connector, 19.5 cm (7.8 in) from the power radio antenna connector breakout

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S133

Located inside the automatic transmission

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S138

(CKT 420) In the body harness between the breakouts for the power radio antenna connector and the park lamp switch relay, 6.5 cm (2.6 in) from the breakout to the power radio antenna connector

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S140

(CKT 514) In the engine harness between the breakouts for the transfer case connectors and the vehicle speed sensor, RH rear, 10 cm (4 in) from the breakout to the transfer case connectors

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S203

(CKT 241) In the body harness 39 cm (15.6 in) from the BCM connector breakout toward the C211 steering column connector

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S223

(CKT 300) At the IP harness, near the IP fuse block, in the breakout, 8 cm (3.2 in) from C217

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