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 P (Park).

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.