GM Service Manual Online
For 1990-2009 cars only

Close the doors and turn on the ignition. If all the doors are closed, every time you move the shift lever out of PARK (P) all of the doors will lock. And, every time you stop and move the shift lever into PARK (P), the doors will unlock. If someone needs to get out while you're not in PARK (P), have that person use the manual or power lock switch. When the door is closed again, it will not lock automatically. Just use the manual or power lock switch to lock the door again. If you need to lock the doors before shifting out of PARK (P), just use the manual or power lock switch.

Customizing Your Automatic Door Locks Feature

You can program the automatic door locks feature to one of the following modes:

Mode 0: No automatic door lock or unlock.

Mode 1: All doors automatically lock when shifted out of PARK (P). No automatic door unlock.

Mode 2: All doors automatically lock when shifted out of PARK (P). Only the driver's door automatically unlocks when shifted into Park (P).

Mode 3: All doors automatically lock when shifted out of PARK( P). All doors automatically unlock when shifted into PARK (P).

Use the following procedure to change modes:

  1. Close all the doors and turn the ignition on. Keep all doors closed throughout this procedure.
  2. Press and hold LOCK on the power door lock switch on the driver's door through Step 4.
  3. Press the lock button on the remote keyless entry transmitter to enter the programming mode. The automatic door lock mode will remain in the current mode.
  4. Press the lock button on the transmitter again. Each time the lock button is pressed, the mode will advance by one, going from Mode 3 to Mode 0 to Mode 1, etc.
  5. For each press of the lock button, the door locks will activate in the same manner they would activate in the corresponding automatic door lock mode. For example, pressing the lock button on the transmitter to advance to Mode 2 would result in all doors locking and then, only the driver's door would unlock. For Mode 0, no locking or unlocking will occur.

  6. Release the power door lock switch and turn the ignition off. The automatic door locks will remain in the most recent mode selected.

This procedure only changes the mode for the transmitter used to change this setting.

If your vehicle is equipped with the Driver Information Center (DIC), you can also program the automatic door locks feature through the DIC. See Driver Information Center (DIC) .