GM Service Manual Online
For 1990-2009 cars only

The vehicle may have rear door security locks which prevent passengers from opening the rear doors from the inside.

Security Lock Label shown


Object Number: 831642  Size: A3

The rear door security locks are located on the inside edge of each rear door. The rear doors must be open to access them. The label depicting lock and unlock positions is located near the lock.

To set the locks:

  1. Insert the key into the security lock slot and turn it so the slot is in the horizontal position.
  2. Close the door.

To open a rear door when the security lock is on:

  1. Unlock the door by lifting the rear door manual lock, by pressing the power door lock switch, or if the vehicle has one, by using the Remote Keyless Entry (RKE) transmitter.
  2. Open the door from the outside.

To cancel the rear door security lock:

  1. Unlock the door and open it from the outside.
  2. Insert the key into the security lock slot and turn it so the slot is in the vertical position.