GM Service Manual Online
For 1990-2009 cars only

Important: Do not attempt to repair a faulty door lock. Replace the lock.

The door locks use the fork bolt lock design which includes a safety interlock feature. The door is secured in a closed position when the door lock fork bolt engages the striker. Rotate the lock knob rearward to unlock the door from the inside.

Removal Procedure

  1. Remove the trim panel. Refer to Front Side Door Trim Panel Replacement .
  2. Remove the door water deflector. Refer to Rear Side Door Water Deflector Replacement .

  3. Object Number: 166391  Size: SH
  4. Remove the outside handle rod from the lock.
  5. Cut the lock rod clip with a pair of side cutters.

    Unscrew and discard the remainder of the clip from the rod.


    Object Number: 164522  Size: SH
  6. Remove the rods from the inner door handle.

  7. Object Number: 164519  Size: SH
  8. Remove the rods from the anti rattle clip.

  9. Object Number: 166397  Size: SH
  10. Remove the screws (1,2,3) securing the lock to the rear door.

  11. Object Number: 164514  Size: SH
  12. Reposition the lock

  13. Object Number: 166395  Size: SH
  14. Disconnect the electrical connector(s).
  15. Remove the rear door lock with the inside handle rods attached.
  16. Remove the inside handle rods from the lock.

Installation Procedure


    Object Number: 164514  Size: SH
  1. Install the inside handle rods to the lock.
  2. Install a new clip to the lock.

  3. Object Number: 166395  Size: SH
  4. Position the door lock to the door.
  5. Install the door lock electrical connectors.
  6. Install the lock to the door.
  7. Important: Use Loctite® Blue GM P/N 123453852 or the equivalent prior to the fastener installation.


    Object Number: 166397  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  8. Loosely install the three screws (1,2,3) mounting the door lock.
  9. Tighten
    Tighten the door lock screws in sequence (1, 2, 3) to 10 N·m (89 lb in).


    Object Number: 164519  Size: SH
  10. Install the inside handle rods into the anti rattle clip.

  11. Object Number: 164522  Size: SH
  12. Position the outside handle rod in the new clip eliminating the free play from the handle.
  13. Snap the clip closed over the threaded portion of the rod.

  14. Object Number: 166391  Size: SH
  15. Install the outside handle rod.
  16. Install the rear door water deflector. Refer to Rear Side Door Water Deflector Replacement .
  17. Install the rear door inner trim panel. Refer to Rear Side Door Trim Panel Replacement .