GM Service Manual Online
For 1990-2009 cars only

The front and the rear door lock strikers each consist of a striker with 2 screws threaded into a floating cage plate in the center pillars and the rear quarter upper trim panel. The door is secured in the closed position when the door lock fork snaps over and engages the striker.

Childproof Rear Door Lock

The childproof rear door locks help prevent passengers, especially children, from opening the rear doors of the vehicle from the inside.

To activate the locks, move the levers of both rear doors to the lock position. Then, close both doors. The rear passengers will be unable to open the doors from inside of the vehicle.

To deactivate the locks, unlock the door from the inside of the vehicle and open the door from the outside. Move the lever to the unlock position. The rear door will now work normally.