GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 740540  Size: SH
  1. With a small flat-bladed tool release the retainers for the lumbar support knob.
  2. Pull the lumbar support knob off the actuator .

Installation Procedure


    Object Number: 740540  Size: SH
  1. Align the lumbar support knob to the splines on the actuator.
  2. Press down on the lumbar support knob until the retainers are fully seated on the actuator.