GM Service Manual Online
For 1990-2009 cars only

Body Control Module

Scan Tool Output Control

Additional Menu Selection(s)

Description

Door Lock Test

Lock All Doors

The body control module (BCM) actuates the door lock relay when you select ON. All doors should lock.

Door Lock Test

Passenger Door Unlock

The BCM acuates the door unlock relay and the driver door unlock relay when you select ON. All doors should unlock.