Circuit Description
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The door lock switch provides a direct ground input to the body control module (BCM) when the door lock switch is activated to the unlock position. This input is used by the BCM to control the door locks.