GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Park Avenue 🢒 Body and Accessories 🢒 Body Rear End 🢒 Rear Compartment Lid Lock Cylinder Replacement

Removal Procedure

    Object Number: 255866 Size: SH
  1. Remove the back-up lamp assembly. Refer to Backup Lamp Replacement in Lighting Systems.
  2. Remove the rear compartment lid trim. Refer to Rear Compartment Lid Inner Panel Trim Replacement .
  3. Remove the nuts (3) retaining the lock cylinder (2) to the lid (1).
  4. Remove the lock cylinder (2) from the lid (1).

Installation Procedure

    Object Number: 255866 Size: SH
  1. Install the lock cylinder (2) to the lid (1).

    2. 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.

  2. Install the nuts (3) in order to retain the lock cylinder (2) to the lid (1).

    3. Tighten
    Tighten the nuts to 9 N·m (80 lb in).

  3. Install the rear compartment lid trim.
  4. Install the back up lamp assembly.