GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Firebird 🢒 Body and Accessories 🢒 Body Control System 🢒 Door Lock Replacement

Removal Procedure
  1. Raise window.
  2. Remove front side door trim panel. Refer to Door Lock Striker Adjustment .
  3. Remove water deflector as needed. Refer to Door Water Deflector Replacement .

    4. Object Number: 378854 Size: MH
  4. Remove lock cylinder rod (5) from lock cylinder pawl clip (4).
  5. Remove the lock cylinder retainer (2) using a screwdriver to slide the retainer upward.
  6. Remove door lock cylinder (1) from door (3).
  7. Remove lock cylinder gasket (2) from door (3).

Installation Procedure

    Object Number: 378854 Size: MH
  1. Install new lock cylinder gasket (2) to door (3).
  2. Install door lock cylinder (1) from door (3).
  3. Install the lock cylinder retainer (2) by using a screwdriver to slide the retainer downward into place.
  4. Install lock cylinder rod (5) to lock cylinder pawl clip (4).
  5. Install water deflector as needed. Refer to Door Water Deflector Replacement .
  6. Install front side door trim panel. Refer to Door Lock Striker Adjustment .
  7. Lower window.