GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 740540  Size: SH
  1. Remove the lumbar support knob by using a small flat-bladed tool to release thr retainer and pulling off.
  2. Remove the lumbar support knob from the vehicle.

Installation Procedure


    Object Number: 740563  Size: SH
  1. Position the lumbar support knob to the splines and retainer tabs.
  2. Install the lumbar support knob, pressing into place until fully seated.