GM Service Manual Online
For 1990-2009 cars only
  1. Remove the instrument panel center trim panel.
  2. Note: The rear defogger switch is part of the blower control switch assembly.

  3. Remove the heater and air conditioning control replacement. Refer to Heater and Air Conditioning Control Replacement.

Installation Procedure

  1. Install the heater and air conditioning control replacement. Refer to Heater and Air Conditioning Control Replacement.
  2. Install the instrument panel center trim panel.