Automatic Door Locks

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The automatic door lock feature provides for the locking and unlocking of all the doors automatically when shifting the transmission. When the vehicle doors are closed, ignition turned ON, and the transmission is shifted out of PARK, all doors will lock. When the vehicle is stopped and the transmission is shifted into PARK, the doors will unlock.

Operation of the automatic door lock system depends upon door status information gathered by the BCM, and examined by the remote control door lock receiver (RCDLR). The system will not operate properly if the RCDLR, which is the door lock master, detects that a vehicle door is open. Each door latch contains a door open switch. Each door open switch receives voltage from the BCM and are grounded independently. When a door is open, the switch closes, voltage flows through the switch, and the BCM interprets the flow of voltage as a door open input. The BCM sends this information over the GMLAN serial data circuit where it is detected by the RCDLR. If the RCDLR determines that one of the vehicle doors is open, automatic door locking will not be permitted.

Automatic door locking is programmed during the manufacturing process, but it can be custom programmed by the operator to fit individual preferences. For information concerning custom programming available and programming instructions, refer to the vehicles owners manual.