GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the seat assembly. Refer to Seat Replacement .
  2. Remove the head restraint. Refer to Front Seat Head Restraint Replacement .
  3. Remove the seatback trim cover. Refer to Front Seat Back Trim Replacement .

  4. Object Number: 258553  Size: SH
  5. Remove the J-channel from the head restraint side of the seat in order to expose the seatback frame (13).
  6. Remove the roller assembly.
  7. Disconnect the electrical connector from under the seat frame.
  8. Remove the 2 bolts (10).
  9. Back out the seatback retainer bolts (11) in order to allow clearance for the adjuster motor wire harness connector.
  10. Remove the head restraint adjuster motor (5).

Installation Procedure


    Object Number: 258553  Size: SH
  1. Install the head restraint adjuster motor (5).
  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.

  3. Install the head restraint adjustment motor bolts (10).
  4. Tighten
    Tighten the bolts to 10 N·m (88 lb in).

  5. Apply Loctiteâ„¢ 242 (GM P/N 12345382) to the seatback frame bolts.
  6. Tighten the seat back retaining bolts (11).

    Tighten
    Tighten the bolts to 24 N·m (18 lb ft).

  7. Install the roller assembly.
  8. Connect the electrical connector.
  9. Install the seat cover J-channel.
  10. Install the seatback trim cover. Refer to Front Seat Back Trim Replacement .
  11. Install the head restraint. Refer to Front Seat Head Restraint Replacement .
  12. Install the seat assembly. Refer to Seat Replacement .