GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Battery (A4WD)

Behind the left headlamp

Engine Electrical Component Views

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Battery (RWD)

Behind the left headlamp

Engine Electrical Component Views

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Body Control Module (BCM)

Inside the dash, above the radio

Body Control System Component Views in Body Control Systems

Body Control System Connector End Views in Body Control Systems

Generator

RH front of engine

Engine Electrical Component Views

Engine Electrical Connector End Views

Ignition Switch

Inside the steering column

Shift Lock Control Component Views in Automatic Transmission - 4L60-E

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Instrument Cluster

On the left side of the dash

HVAC Component Views in HVAC Systems - Manual

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

Instrument Panel (IP) Fuse Block

On the lower left side of the dash, next to the left side kick panel

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Park/Neutral Position and Backup Lamp Switch (A4WD)

In the left center of the transmission

Engine Electrical Component Views

Engine Controls Connector End Views in Engine Controls

Park/Neutral Position and Backup Lamp Switch (RWD)

In the left center of the transmission

Engine Electrical Component Views

Engine Controls Connector End Views in Engine Controls

Starter Enable Relay

In the underhood fuse block

Electrical Center Identification Views in Wiring Systems

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Starter Motor (A4WD)

Lower right side of the engine block

Power and Grounding Component Views in Wiring Systems

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Starter Motor (RWD)

Lower right side of the engine block

Power and Grounding Component Views in Wiring Systems

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Starter Solenoid (A4WD)

At the top of the starter motor

Power and Grounding Component Views in Wiring Systems

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Starter Solenoid (RWD)

At the top of the starter motor

Power and Grounding Component Views in Wiring Systems

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Underhood Fuse Block (A4WD)

On the left side of the dash, near the battery

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Underhood Fuse Block (RWD)

On the left side of the dash, near the battery

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Upfitter Battery Power Stud

In the underhood fuse block

Electrical Center Identification Views in Wiring Systems

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Vehicle Control Module (VCM)

On the left side of the engine compartment on the lower side of the battery

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

C100

In the left side front of the dash

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201

In the lower half of the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G102 (A4WD)

In the left side radiator support

Power and Grounding Component Views in Wiring Systems

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G102 (RWD)

In the left side radiator support

Power and Grounding Component Views in Wiring Systems

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G103 (A4WD)

In the lower right front side of the engine block

Power and Grounding Component Views in Wiring Systems

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G103 (RWD)

In the lower right front side of the engine block

Power and Grounding Component Views in Wiring Systems

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G104

In the center of the dash 31 cm (12.2 in) from the A/C low pressure cut-off switch breakout

Harness Routing Views in Wiring Systems

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G105

In the thermostat housing

Power and Grounding Component Views in Wiring Systems

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G107

In the left rear of the engine block next to the knock sensor

Harness Routing Views in Wiring Systems

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S108

In the engine harness 10.5 cm (4.1 in) from the underhood fuse block breakout

Harness Routing Views in Wiring Systems

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S111

In the engine harness 17 cm (6.7 in) from the underhood fuse block breakout

Harness Routing Views in Wiring Systems

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S117

In the engine harness 2.5 cm (1 in) from the A/C low pressure cut-off switch breakout toward the engine

HVAC Component Views in HVAC Systems - Manual

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S121 (Fuseable Link)

In the engine harness 12 cm (4.7 in) from the starter solenoid connector

Harness Routing Views in Wiring Systems

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S124

In the engine harness 11.3 cm (4.4 in) from the oil pressure switch breakout

Harness Routing Views in Wiring Systems

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S204

In the IP harness 7 cm (2.8 in) from C100

Harness Routing Views in Wiring System

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S213

In the IP harness 41 cm (16.1 in) from the headlamp switch connector.

Harness Routing Views in Wiring Systems

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Splice Pack #261 (SP261)

In the IP harness 20 cm (7.9 in) from relay blocks breakout toward the DLC

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications