GM Service Manual Online
For 1990-2009 cars only

Body Control Module (BCM)

Scan Tool Output Control

Additional Menu Selection(s)

Description

Backup Lamps

Light Test

The BCM activates the backup lamp relay when you select ON. The backup lamps illuminate until commanded OFF.

Daytime Running Lights

Light Test

The BCM activates the DRL relay for 5 seconds when you select ON. The daytime running lights illuminate for 5 seconds.

Headlamps

Light Test

The BCM activates the headlamp relay when you select ON. The headlamps illuminate until commanded OFF.

Parking Lamp

Light Test

The BCM activates the park lamp relay when you select ON. The park lamps illuminate until commanded OFF.

Front Fog Lamps

Light Test

The BCM activates the FOG LP relay when you select ON. The fog lamps illuminate until commanded OFF.

Theater Dimming #1

Light Test

The BCM activates the theater dimming outputs for 5 seconds when you select ON. The dome, footwell, and courtesy lamps illuminate for 5 seconds.