GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.


    Object Number: 547146  Size: SH
  1. Remove the seat assembly. Refer to Front Seat Replacement - Bucket .
  2. Remove the head restraint. Refer to Front Seat Head Restraint Replacement .
  3. Remove the seatback trim cover (7). Refer to Driver Seat and Passenger Seat Back Cushion Finish Panel Replacement .
  4. Remove the seat back cover and pad. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .
  5. Remove the seat back frame. Refer to Front Seat Back Frame Replacement .

  6. Object Number: 547155  Size: SH
  7. Remove the block (2) from the lower seat frame (1).

  8. Object Number: 547149  Size: SH
  9. Using a flat-bladed tool, disengage the retainer lock from the head restraint/power actuator assembly.

  10. Object Number: 547152  Size: SH

    Important: Ensure the electrical connector does not catch on the inner seat back frame upon the head restraint/power actuator assembly removal.

  11. Firmly hold the seat back frame (1) pull outward the power actuator assembly (2).
  12. Remove the power actuator assembly from the seat back frame.

Installation Procedure


    Object Number: 547152  Size: SH
  1. Feed the wire harness down through the seatback frame.
  2. Install the head restraint/power actuator assembly (2).
  3. Carefully apply pressure to the head restraint/power actuator assembly in order to secure the retainer locks (3) to the seat back frame (1).

  4. Object Number: 547155  Size: SH

    Important: Ensure the holes are aligned for the block (2) in the seat back frame (1).

  5. Install the seat back frame retaining block.
  6. Ensure the electrical harness is not pinched and moves freely within the block.

  7. Object Number: 547146  Size: SH
  8. Install the seat back frame. Refer to Front Seat Back Frame Replacement .
  9. Install the seat back cover and pad. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .
  10. Install the seatback trim cover. Refer to Driver Seat and Passenger Seat Back Cushion Finish Panel Replacement .
  11. Install the head restraint. Refer to Front Seat Head Restraint Replacement .
  12. Install the seat assembly. Refer to Front Seat Replacement - Bucket .