GM Service Manual Online
For 1990-2009 cars only

Body Control Module (BCM)

Scan Tool Output Control

Additional Menu Selection(s)

Description

ALC Headlamps

Light Test

The BCM actuates the headlamps when you select ON. The headlamps should illuminate for 5 seconds.

ALC Parking Lamps

Light Test

The BCM actuates the ALC parklamp relay for 5 seconds when you select ON. The park lamps should illuminate for 5 seconds.

Daytime Running Lamps

Light Test

The BCM actuates the DRL relay for 5 seconds when you select ON. The Daytime Running Lamps should illuminate for 5 seconds.

Front Fog Lamps

Light Test

The BCM actuates the FOG LAMP relay for 5 seconds when you select ON. The front fog lamps should illuminate for 5 seconds.

Interior Lamps

Light Test

The BCM actuates the interior lamp control for 5 seconds when you select ON. The foot well, and courtesy lamps should illuminate for 5 seconds.