GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 LeSabre 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Front Side Door Latch Replacement

Removal Procedure

    Object Number: 442403 Size: SH
  1. Place window in the full up position.
  2. Remove the door trim panel. Refer to Front Side Door Trim Panel Replacement .
  3. Remove the door module. Refer to Door Control Module Replacement .
  4. Remove the inside door handle. Refer to Front Side Door Inside Handle Replacement .
  5. Remove the water deflector. Refer to Front Side Door Water Deflector Replacement .
  6. Disconnect the electrical connectors.

    7. Object Number: 507358 Size: SH
  7. Disconnect the lock cylinder rod from the door latch.

    8. Object Number: 507065 Size: SH
  8. Disconnect the outside door handle rod (1) from the door latch by opening the clip (2).

    9. Object Number: 442403 Size: SH
  9. Remove the door latch fasteners.
  10. Remove the window run channel fastener.
  11. Position window run channel out of the way.
  12. Remove the door latch from the door with the inside door handle and lock rods attached.
  13. Remove the handle and lock rods from the door latch.

Installation Procedure

    Object Number: 442403 Size: SH
  1. Install the inside door handle and lock rods to the door latch.
  2. Install the door latch into the door.

    3. 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.

  3. Install the door latch fasteners.

    4. Tighten
    Tighten the fasteners to 10 N·m (89 lb in).


    Object Number: 105412 Size: SH
  4. Install the outside door handle rod (1) into the latch clip (2).
  5. Close the clip.

    6. Object Number: 507358 Size: SH
  6. Install the lock cylinder rod into the door latch.
  7. Install the window run channel fastener.

    8. Tighten
    Tighten the window run channel fastener to 9 N·m (80 lb in).

  8. Install the inside door handle. Refer to Front Side Door Inside Handle Replacement .
  9. Connect the electrical connectors.
  10. Inspect for proper operation of the door handles and lock cylinder before installing the water deflector and the door trim panel.
  11. Install the water deflector. Refer to Front Side Door Water Deflector Replacement .
  12. Install the door module. Refer to Door Control Module Replacement .
  13. Install the door trim panel. Refer to Front Side Door Trim Panel Replacement .