GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM)

On the lower left side of the IP below the steering column

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Body Wiring Harness Junction Block

Under the left side of the instrument panel near the left kick panel

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Data Link Connector (DLC)

On the left lower dash below the steering column

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Engine Wiring Harness Junction Block

At the left side of the engine compartment near the battery

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Fuse Block

On the lower left side of the IP

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Headlamp & Panel Dimmer Switch

To the left of the steering wheel on the IP

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Inflatable Restraint Sensing & Diagnostic Module

Under the driver seat

SIR Component Views in SIR

SIR Connector End Views in SIR

Instrument Cluster

On the left side of the IP above the steering column

Instrument Panel, Gages, and Console Component Views

Instrument Panel, Gages, and Console Connector End Views

Key In Ignition Switch

Part of the ignition cylinder

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--

Mini Wedge (Door Jamb Switch), LH

Part of the left door latch assembly

Power and Grounding Component Views in Wiring Systems

Lighting Systems Connector End Views in Lighting Systems

Mini Wedge (Door Jamb Switch), RH

Part of the right door latch assembly

Power and Grounding Component Views in Wiring Systems

Lighting Systems Connector End Views in Lighting Systems

Power Door Lock Switch, LH

On the left door tirm panel armrest

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Power Door Lock Switch, RH

On the right door trim panel armrest

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Seat Belt Switch

In the seat belt buckle

--

SIR Connector End Views in SIR

C200

At the left kick panel next to the A pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201

On the steering column under the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201B

On the steering column under the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C301

Under the left seat

--

Inline Harness Connector End Views in Wiring Systems

C303

Under the right seat

--

Inline Harness Connector End Views in Wiring Systems

C305

Under the left front seat

--

Inline Harness Connector End Views in Wiring Systems

G203

On the left upper IP at the A pillar

Power and Grounding Component Views in Wiring Systems

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G304

Under the driver seat

Power and Grounding Component Views in Wiring Systems

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P100

At the left rear of the engine compartment in the front of the dash

Power and Grounding Component Views in Wiring Systems

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P500

Between the left front door and the body

Power and Grounding Component Views in Wiring Systems

--

Splice Pack 203 (SP203)

On the top left side of the IP near the A pillar

Harness Routing Views in Wiring Systems

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Splice Pack 205 (SP205)

On the left side of the IP behind the headlamp switch

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications