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

Horn (High), RH

On the right lower corner of the radiator core support

Horn Component Views

Horn Connector End Views

Horn (Low), LH

On the left lower corner of the radiator core support

Horn Component Views

Horn Connector End Views

Horn Relay

In the UBEC

Electrical Center Identification Views in Wiring Systems

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Horn Switch

At the top of the steering column on the steering wheel

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Horn Connector End Views

Underhood Bussed Electrical Center (UBEC)

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

C201A

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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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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S100

In the forward lamp harness

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S101

In the forward lamp harness

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