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

Body Control Module (BCM)

At the lower rear of the IP, on the heater

Body Control System Component Views in Body Control System

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Body Control Module (BCM) Connector C1, (24 Cavities)

At the lower rear of the IP, on the heater

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Data Link Connector (DLC)

To the lower right of the IP

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Electronic Brake Control Module (EBCM)

Part of the Brake Pressure Modulator Valve (BPMV), at the right front wheelwell

Antilock Brake System Component Views in Antilock Brakes

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Electronic Brake Control Module (EBCM) Connector C1 (10 Cavities)

At the body harness connector on the left of the EBCM

Antilock Brake System Component Views in Antilock Brakes

Antilock Brake System Connector End Views in ABS/Traction Control

Electronic Climate Control (ECC) Module

At the IP harness center of the IP, below the radio

HVAC Component Views in HVAC

HVAC Connector End Views in HVAC Systems

Inflatable Restraint Sensing And Diagnostic Module (SDM)

Between the left and the right seats, below the console

SIR Component Views in SIR

SIR Connector End Views in SIR

Instrument Cluster

In the IP, ahead of 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

Memory Seat Module

Below the right front seat

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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

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)

To the left of the engine compartment

Engine Controls Component Views in Engine Controls

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

To the left of the engine compartment

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

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

C315 (6 cavities)

At the body harness to right seat harness, under the right seat

Harness Routing Views in Wiring Systems

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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G105

(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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G200

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

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G201

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

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P100

At the IP bulkhead pass-through, to the right rear of the engine compartment, on the cowl

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S106

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

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S152

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

Power and Grounding Component Views in Wiring Systems

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S201

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

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S209

(CKT 1850) In the body harness, 6.5 cm (2.6 in) from the BCM connector breakout toward the C211 steering column connector

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