GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 Park Avenue 🢒 Body and Accessories 🢒 Seats 🢒 Front Seat Lumbar Support Replacement

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 seat map pocket panel.
  4. Remove the seat side air bag. Refer to Driver and Passenger Seat Side Inflatable Restraint Module Replacement .
  5. Remove the seatback cover. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .
  6. Disconnect the electrical connector.

    7. Object Number: 578950 Size: MH
  7. Remove the clips securing the top and bottom of the lumbar assembly (14) from the frame (18).
  8. Remove the lumbar assembly (14).

Installation Procedure

    Object Number: 578950 Size: MH
  1. Install the lumbar assembly (14).
  2. Connect the electrical connector.
  3. Install the seatback cover to the seatback cushion. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .
  4. Install the seat side air bag. Refer to Driver and Passenger Seat Side Inflatable Restraint Module Replacement .
  5. Install the seat map pocket panel.
  6. Install the head restraint. Refer to Front Seat Head Restraint Replacement .
  7. Install the seat assembly. Refer to Seat Replacement .