GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Automatic Headlamp Control Module

Below the left side of the IP, left of the steering column

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Body Control Module (BCM)

Below the left side of the IP, left of the steering column

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Data Link Connector (DLC)

Below the left side of the IP, right of the steering column

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Driver Seat Adjuster Switch

On the left side of the driver's seat cushion

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Fuse Block

Right side of the IP, in the right front door opening

Power and Grounding Component Views in Wiring Systems

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Headlamp Switch

Upper left side of the IP

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Ignition Key Alarm Switch

Inside the steering column, part of the ignition key cylinder

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Park Brake Indicator Switch

On the upper part of the parking brake pedal assembly

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Powertrain Control Module (PCM)

Front left side of the engine, inside the air cleaner assembly

Engine Controls Component Views in Engine Controls - 2.5L (LB8) and 3.0L (L46)

Powertrain Control Module Connector End Views in Engine Controls - 2.5L (LB8) and 3.0L (L46)

Seat Belt Switch

Part of the driver seat belt, inside the right half of the driver's seat belt (buckle side)

Power Seat Component Views in Seats

Power Seat Connector End Views in Seats

Splice Pack SP205

Below the IP, right side of the steering column

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Underhood Accessory Wiring Junction Block

Right side of the engine compartment, mounted to the strut tower

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

C101 (20 cavities)

IP wiring harness to the engine wiring harness, left side of the engine compartment, on the strut tower

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200 (56 cavities)

IP wiring harness to the body wiring harness, behind the right side of the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201 (48 cavities)

IP wiring harness to the steering column wiring harness, behind the IP, on the right side of the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C311 (6 cavities)

Body wiring harness to the driver seat adjuster wiring harness, below the driver seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G203

Below the IP, right side of the steering column

Harness Routing Views in Wiring Systems

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G301

Inside the left door sill, forward of the left front seat

Harness Routing Views in Wiring Systems

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P100

Lower right side of the dash panel

Harness Routing Views in Wiring Systems

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P101

Upper left side of the dash panel

Harness Routing Views in Wiring Systems

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S211

IP wiring harness, right side of the steering column, approximately 20 cm (8 in) from the instrument cluster breakout

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S234

IP wiring harness, right side of the steering column, approximately 13 cm (5 in) from the instrument cluster breakout

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S270

IP wiring harness, behind the right side of the IP, approximately 4 cm (2 in) from the blower motor control module

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S303

Body wiring harness, on the floor, under the driver's seat, approximately 10 cm (4 in) from the C311 breakout

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S330

Driver seat adjuster wiring harness, approximately 20 cm (8 in) from the C311 breakout

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