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 untill commanded OFF.

Headlamps

Light Test

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

Inadvertent Power

Inadvertent Power

The BCM activates the inadvertent power relay for 5 seconds.

Left Turn Signal Lamp

Light Test

The BCM activates the left turn signal lamps when you select ON. The turn signal lamps 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.

Right Turn Signal Lamp

Light Test

The BCM activates the right turn signal lamps when you select ON. The turn signal 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.