GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Relay Block

RH side of the IP, near the fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Clutch Pedal Position (CPP) Switch

On the Clutch support bracket

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Front Axle Switch

At the front axle, to the right of the differential

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Transfer Case Control Connector End Views in Transfer case

Instrument Cluster

On the upper right end of the IP, above the steering column

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Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges, and Console

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

Transfer Case Control Module (TCCM)

LH lower kick panel below the IP

Transfer Case Control Component Views in Transfer Case

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Transfer Case Control Module (TCCM) Connector C1 (32 cavities)

LH lower kick panel below the IP

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Control Module (TCCM) Connector C2 (32 cavities)

LH lower kick panel below the IP

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Shift Solenoid

In the LH rear of the engine compartment, near the cowl

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Transfer Case Control Connector End Views in Transfer Case

Transfer Case Select Switch

At the center of the IP, above the right of the radio

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Transfer Case Select Switch Connector C1(8 cavities)

At the center of the IP, above the right of the radio

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Transfer Case Control Connector End Views in Transfer Case

Transfer Case Select Switch Connector C2(4 cavities)

At the center of the IP, above the right of the radio

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Transfer Case Control Connector End Views in Transfer Case

Transfer Case Encoder Motor

RH of the ATC, below the rear transfer case speed sensor

Transfer Case Control Component Views in Transfer Case

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Transfer Case Encoder Motor Connector C1 (4 cavities)

RH of the ATC, below the rear transfer case speed sensor

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Encoder Motor Connector C2 (6 cavities)

RH of the ATC, below the rear transfer case speed sensor

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Speed Sensor, Front

On the left side of the transfer case

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Transfer Case Speed Sensor, Rear

On the right rear of the transfer case, near the drive shaft

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

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

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

C101 (8 cavities)

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

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Inline Harness Connector End Views in Wiring Systems

C103 (16 cavities)

At the engine harness to the body harness, near the VCM

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Inline Harness Connector End Views in Wiring Systems

C114 (2 cavities)

At the body harness to the front axle switch extension harness, to the left center of the engine compartment, near the EBCM

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Inline Harness Connector End Views in Wiring Systems

C203 (116 cavities)

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

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Inline Harness Connector End Views in Wiring Systems

G103

(CKT 351) At the engine harness, to the left rear of the cylinder head

Power and Grounding Component Views in Wiring Systems

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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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G105

(CKT 451) At the engine harness, to the right rear of the cylinder head

Power and Grounding Component Views in Wiring Systems

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G203

(CKT 1850) At the body harness, to the right of the IP

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G204

(CKT 1850) At the body harness, to the right of the IP

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P100

In the right rear side of the engine compartment, at the bulkhead, above C100

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S106

(CKT 351) At the engine harness, between the breakouts to the VCM connectors and the engine coolant temperature sensor connector, 27 cm (10.8 in) from the breakout for the VCM connnectors

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S115

(CKT 1640) In the body harness at the breakout to the park lamp switch relay connector

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S116

(CKT 431) In the body harness, 19.5 cm (7.8 in) from the breakout to the windshield wiper motor connector, toward the underhood fuse block

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S125

(CKT 1695) In the body harness between the breakouts for the EBCM C1 and the cruise control module connector, 6.5 cm (2.6 in) from the EBCM CI breakout

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S140

(CKT 450, CKT 514) In the engine harness between the breakouts to the RH rear VSS connector and the transfer case encoder motor connectors, 10 cm (4 in) from the transfer case connector breakout

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S152

(CKT 351, CKT 451) At the engine harness between the breakouts for the left rear and right rear engine block grounds, 15 cm (5.9 in) from the breakout to the right rear engine block ground

Power and Grounding Component Views in Wiring Systems

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S200

(CKT 584) At the body harness between the breakouts to the automatic transmission indicator lamp connector and the rear washer hose, 10 cm (4 in) from the washer hose breakout

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S201

(CKT 1807) In the body harness 13 cm (5.2 in) from the BCM connnector breakout, toward the C211 steering column harness connector

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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 harness connector

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S211

(CKT 1050) In the body harness 6.5 cm (2.6 in) from the G203, G204, and G205 grounds breakout and the ground terminals

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Splice Pack SP203

(CKT 1850) IP harness, on the IP, in front of the ashtray

Harness Routing Views in Wirng Systems

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