GM Service Manual Online
For 1990-2009 cars only

This feature allows you to customize the automatic locking of the doors when exiting the vehicle.

Programmable Modes

Mode 1: Both Features Off. Doors will always lock immediately when you press LOCK on the power door lock switch or the remote keyless entry transmitter.

Mode 2: Lockout Deterrent Only. If you leave your key in the ignition with the driver's door open, you will not be able to lock the doors with the power door locks.

Mode 3: Last Door Closed Locking Only. If the power door lock switch or the remote keyless entry transmitter is used to lock the vehicle while any door or the liftgate is open, you will hear three chimes. The doors will not lock. Five seconds after the last door is closed, all doors and the liftgate will lock.

Mode 4: Both Features On. This combines Modes 2 and 3.

Your vehicle was originally programmed to Mode 4. The mode may have been changed since then. To determine the current mode, or to change the mode, do the following:

  1. Follow the instructions for Entering Programming Mode .
  2. Press UNLOCK on the power door lock switch.
  3. Count the number of chimes you hear. The number of chimes indicates the vehicle's current programmed mode. If you do not wish to change the current mode, you can either exit the programming mode by following the instructions later in this section or program the next feature available on your vehicle.
  4. Press UNLOCK to change the current mode.
  5. Press UNLOCK until you hear the number of chimes corresponding to the mode selection you want.

The mode you selected is now set. You can either exit the programming mode by following the instructions later in this section or program the next feature available on your vehicle.