GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Automatic Transfer Case (ATC) Control Module

To the left of the instrument cluster behind the headlamp switch

Transfer Case Control Component Views in Automatic Transfer Case

Transfer Case Control Connector End Views in Automatic Transfer Case

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

Cruise Control Module

On the left rear of the engine compartment attached to the cowl

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

Cruise Control Switch

On the left side of the steering column on the multifunction switch

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

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

Electronic Brake Control Module (EBCM)

On the left side of the inner frame

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

Engine Oil Pressure (EOP) Sensor

At the rear of the engine on the left side of the center

Instrument Panel, Gages, and Console Component Views

Instrument Panel, Gages, and Console Connector End Views

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

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

Park Brake Switch

Part of the park brake assembly

Hydraulic Brake Component Views in Hydraulic Brakes

Hydraulic Brake Connector End Views in Hydraulic Brakes

Park Position Switch

Part of the linear assembly in the steering column

Steering Column Disassembled View in Steering Wheel and Column-Tilt

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Powertrain Control Module (PCM)

Near the left front inside the engine compartment

Engine Controls Component Views in Engine Controls - 4.8L, 5.3L, 6.0L

Engine Controls Connector End Views in Engine Controls - 4.8L, 5.3L, 6.0L

Radio

In the center of the IP

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Vehicle Control Module (VCM)

On the left front of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

Engine Controls Connector End Views in Engine Controls - 4.3L

C100

Under the Engine Wiring Harness Junction Block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C102

Under the Engine Wiring Harness Junction Block

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

G100

On the left radiator support bracket

Power and Grounding Component Views in Wiring Systems

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G103

On the right rear of the engine block

Power and Grounding Component Views in Wiring Systems

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G203

On the left upper IP at the A pillar

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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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

S100

In the forward lamp harness

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