Programmable Automatic Door Locks

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The automatic door lock feature can be programmed to control the door lock system. The automatic door lock feature is factory programmed to have all doors lock and unlock.

When the automatic door lock feature is programmed to control the door lock system, the driver door switch (DDS), passenger door switch (PDS) and body control module (BCM) will lock the vehicle doors if the following inputs are true:

Ignition 1 input is active.
All door jamb switch inputs are inactive.
Cargo door or liftgate/liftglass ajar inputs are inactive.
Transmission is shifted out of PARK.

This automatic door lock function will only occur once per ignition cycle unless, a door jamb switch input changes state to active and back to inactive. Then the DDS, PDS and BCM will lock all doors again.

Once the automatic door lock feature has locked the doors, the BCM will then unlock all the doors when the transmission is shifted into PARK.