GM Service Manual Online
For 1990-2009 cars only

With this feature, all the doors will lock as the transaxle is shifted out of PARK (P) if the ignition key is in RUN and all doors are closed. The doors will automatically lock if the vehicle is going faster than 3 mph (5 km/h).

In the following two situations, when a door is opened, all doors will lock again:

    • The brake pedal is applied, a door is opened and then closed, and the brake pedal is released.
    • A door is opened and closed without the brake pedal applied while the vehicle is moving faster than 3 mph (5 km/h).

When programmed, all doors will unlock when the key is removed from the ignition.

The programmable unlocking feature can be programmed on or off by turning the ignition key to RUN and pressing the unlock power door lock switch for eight seconds. The horn will chirp once when this feature is on and will chirp twice when it is off.

Vehicles Equipped with Manual Transaxle

This feature will lock all doors when the vehicle goes faster than 3 mph (5 km/h) if the ignition key is in the "RUN" position and all doors are closed.

If someone needs to get in or out of the vehicle after the doors have automatically locked, unlock all of the doors using a power door lock switch or unlock the door you want using the manual door lock control.