GM Service Manual Online
For 1990-2009 cars only

If you have a vehicle with an automatic transaxle, it is equipped with an automatic door lock/unlock feature which enables you to program your power door locks.

Your vehicle left the factory programmed to Mode 4.

The following is a list of the available programming options:

Mode 1: All doors and liftgate lock when the shift lever is moved out of PARK (P) with the ignition on and all doors and liftgate closed. There is no automatic door unlocking.

Mode 2: No automatic door locking or unlocking.

Mode 3: All doors and liftgate lock when the shift lever is moved out of PARK (P) with the ignition on and all doors and liftgate closed. All doors and liftgate unlock when the shift lever is moved to PARK (P) with the ignition on.

Mode 4: All doors and liftgate lock when the shift lever is moved out of PARK (P) with the ignition on and all doors and liftgate closed. All doors and liftgate unlock when the ignition switch is turned from ON to ACC or to LOCK.

To change the mode you are in, do the following:

  1. Set the interior lamp control dial to the door position. See Interior Lamps Control .
  2. Move the shift lever into PARK (P) and close all doors and liftgate.
  3. Turn the ignition to ON.
  4. Within five seconds after the ignition is turned to ON, press and hold the power door lock switch in the lock position for about five seconds.
  5. The interior lamp will flash to indicate that the mode has been changed. For example, if the lamp flashes once, the function has been changed to Mode 1.
  6. Turn the ignition off. Then repeat steps 3 through 5 to select consecutive modes.

If the battery is disconnected or run down, the mode is changed to the initial mode which is Mode 4.