GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 Body and Accessories 🢒 Seats 🢒 Driver or Passenger Seat Replacement

Removal Procedure
  1. Move the seat to the full-forward position.

    2. Object Number: 258218 Size: SH
  2. Remove the 2 rear bolts (1) that secure the seat to the floor pan.

    3. Object Number: 258219 Size: SH
  3. Remove the rear support covers (1,2,3).
  4. Move the seat to the rear.

    5. Object Number: 258220 Size: SH
  5. Remove the track cover (1) by performing the following steps:
    6. 5.1. Slide the cover forward.
    5.2. Unsnap the cover.
  6. Tilt the seat forward.

    7. Object Number: 258223 Size: SH
  7. Disconnect the electrical connectors.
  8. Remove the seat.

Installation Procedure

    Object Number: 258223 Size: SH

    Important: Prior to installing the seat, verify that the area where the hooks engage is not deformed or raised. If the sheet metal is deformed, re-flatten the raised sheet metal using an appropriate device, such as a ball peen hammer.

  1. Position the seat in order to align the hooks in the slots.
  2. Tilt the seat forward.
  3. Connect the electrical connectors.

    4. Object Number: 258220 Size: SH
  4. Install the front track cover (1).
  5. Move the seat to the full-forward position.

    6. Object Number: 258219 Size: SH

    Important: Install the rear adjuster cover (2) prior to driving the bolt in order to secure the seat. Ensure that the adjuster tongues are under the track.

  6. Install the rear support covers (1,3).

    7. Object Number: 258218 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.

  7. Install the 2 rear bolts (1) in order to secure the seat to the floor pan.

    8. Tighten
    Tighten the bolts to 42 N·m (31 lb ft).