Automatic Door Re-Lock
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
The automatic door re-lock function is a Vehicle Personalization feature that comes from the factory enabled. After an automatic door lock function has occurred, the BCM will re-lock an opened vehicle door only if the vehicle is in gear and the brake is On.