Circuit Description
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The LF and RF door lock cylinder switches provide a ground input to the body control module (BCM) when either of the switches are turned to the unlock position. This input is needed for the optional content theft deterrent system when the keyless entry feature does not unlock the doors.