GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM)

Lower rear of the IP, on the heater

Body Control System Component Views in Body Control Systems

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

Lower rear of the IP, on the heater

Body Control System Component Views in Body Control Systems

Body Control System Connector End Views in Body Control Systems

Body Relay Block

Right side of the IP, left of the IP fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Data Link Connector (DLC)

Lower right of the IP

Data Link Communications Component Views

Data Link Communications Connector End Views

Electronic Brake Control Module (EBCM)

On the brake pressure modulator valve (BPMV), towards the rear of the right fenderwell

Antilock Brake System Component Views in Antilock Brakes

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

The body harness connector on the right of the EBCM

Antilock Brake System Component Views in Antilock Brakes

Antilock Brake System Connector End Views in Antilock Brakes

Electronic Climate Control (ECC) Module

The center of the IP, below the radio

HVAC Component Views in HVAC Systems - Automatic

HVAC Connector End Views in HVAC Systems - Automatic

Inflatable Restraint Sensing and Diagnostic Module (SDM)

Between the LF and RF seats, below the console and carpeting

SIR Component Views in SIR

SIR Connector End Views in SIR

Instrument Cluster

In the IP, ahead of the steering column

Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges and Console

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

IP Fuse Block

Right of the IP, near the side door jamb switch

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Seat Adjuster Memory Module, RH

Under the RH seat

Power Seat Component Views in Seats

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Seat Adjuster Memory Module, RH Connector C1 (18 Cavities)

Under the RH seat

Power Seat Component Views in Seats

Power Seat Connector End Views in Seats

Transfer Case Shift Control Module

Behind the LF kick panel

Transfer Case Control Component Views in Transfer Case

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Underhood Fuse Block

On the top of the right inner fenderwell

Power and Grounding Component Views in Wiring Systems

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Underhood Fuse Block Connector C1 (68 Cavities) (Body)

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) (Engine)

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)

Left side of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

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

Left side of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

VCM Connector End Views in Engine Controls - 4.3L

C203 (116 Cavities)

Body harness to IP harness, to the left of the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G103

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

Harness Routing Views in Wiring Systems

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G105

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

Harness Routing Views in Wiring Systems

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G205

(CKT 1050) At the body harness, to the right of the IP

Harness Routing Views in Wiring Systems

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P100

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

Harness Routing Views in Wiring Systems

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S106

(CKT 351) In the engine harness, between the breakouts to the VCM connectors and the engine coolant temperature sensor connector, 27 cm (10.6 in) from the breakout to the VCM connectors

Harness Routing Views in Wiring Systems

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S152

(CKT 351, CKT 451) In the engine harness, between the breakouts for the LR and the RR engine block grounds, 15 cm (5.9 in) from the breakout to the RR engine grounds

Harness Routing Views in Wiring Systems

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S201

(CKT 1807) Body harness 13 cm (5.1 in) from the BCM connector breakout toward the C211 steering column harness connector

Harness Routing Views in Wiring Systems

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S211

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

Harness Routing Views in Wiring Systems

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