GM Service Manual Online
For 1990-2009 cars only

Door Lock Cylinder Replacement without UA2

Removal Procedure


    Object Number: 334830  Size: SH
  1. Place the window in the full up position.
  2. Remove the door trim panel. Refer to Front Side Door Trim Panel Replacement .
  3. Pull the rear of the water deflector far enough away from the door in order to access the outside door handle. Refer to Front Side Door Water Deflector Replacement .
  4. Remove the outside door handle. Refer to Front Side Door Outside Handle Replacement .
  5. Remove the E-clip on the lock cylinder.
  6. Remove the lock rod and arm.
  7. Release the lock cylinder by inserting a small flat bladed tool between the retaining clip and the housing and twisting.
  8. Remove the lock cylinder from the backside of the door handle.

Installation Procedure


    Object Number: 758982  Size: SH
  1. If a new lock cylinder is to be installed, refer to Key and Lock Cylinder Coding in General Information, for proper coding procedure.
  2. Ensure the lock cylinder retaining clip is fully inserted into the door handle.
  3. Snap the lock cylinder into the outside door handle from the backside.
  4. Secure the lock cylinder arm and rod to the lock cylinder with the E-clip.
  5. Install the outside door handle. Refer to Front Side Door Outside Handle Replacement .
  6. Install the water deflector. Refer to Front Side Door Water Deflector Replacement .
  7. Install the door trim panel. Refer to Front Side Door Trim Panel Replacement .

Door Lock Cylinder Replacement with UA2

Removal Procedure


    Object Number: 821689  Size: SH
  1. Place the window in the full up position.
  2. Remove the door trim panel. Refer to Front Side Door Trim Panel Replacement .
  3. Pull the rear of the water deflector far enough away from the door in order to access the outside door handle. Refer to Front Side Door Water Deflector Replacement .
  4. Remove the outside door handle. Refer to Front Side Door Outside Handle Replacement .
  5. Remove the E-clip (2) on the lock cylinder.
  6. Remove the lock rod and arm.
  7. Remove the roll pins (1).
  8. 7.1. Insert a suitable prying tool between the reinforcement (3) and the roll pin (1).
    7.2. Pry the roll pin downward far enough to grasp the opposite end with pliers.
    7.3. Remove the roll pin with the pliers.
    7.4. Remove the remaining roll pin with a drift punch.
  9. Remove the lock cylinder from the backside of the door handle.

Installation Procedure


    Object Number: 758982  Size: SH
  1. If a new lock cylinder is to be installed, refer to Key and Lock Cylinder Coding in General Information, for the proper coding procedure.
  2. Insert the lock cylinder into the cavity in the door handle.

  3. Object Number: 821689  Size: SH
  4. Install the roll pins (1).
  5. Secure the lock cylinder arm and rod to the lock cylinder with the E-clip (2).
  6. Install the outside door handle. Refer to Front Side Door Outside Handle Replacement .
  7. Install the water deflector. Refer to Front Side Door Water Deflector Replacement .
  8. Install the door trim panel. Refer to Front Side Door Trim Panel Replacement .