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

Removal Procedure

    Object Number: 428100 Size: SH
  1. Remove the seat switch bezel.

    2. Pull outward on the sides of the switch plate (1) to disengage from seat.


    Object Number: 428085 Size: SH
  2. Disconnect the electrical connectors.
  3. Disengage the retaining tabs to remove switch.

Installation Procedure
  1. Align the switch to the bezel.
  2. Fasten the switch to the bezel by pushing downward.

    3. Object Number: 428085 Size: SH
  3. Connect the electrical connectors.

    4. Object Number: 428100 Size: SH
  4. Align the bezel to the seat (1).

    5. Push inward to engage the retaining clips.