GM Service Manual Online
For 1990-2009 cars only

Your vehicle is programmed at the factory to lock all doors automatically when the following are met:

    • all doors are closed
    • the ignition is on
    • the shift lever is moved out of PARK (P).

This feature cannot be disabled.

If someone needs to exit the vehicle once the doors are locked, have that person use the manual lock knob or power door unlock switch.