GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 478186  Size: SH
  1. Using a taped flat bladed tool, gently pry the ambient light sensor (2) from the upper right IP mounting bolt trim cover (1).

  2. Object Number: 478187  Size: SH
  3. Disconnect the ambient light sensor electrical connector (2).
  4. Remove the ambient light sensor (1) from the vehicle.

Installation Procedure


    Object Number: 478187  Size: SH
  1. Connect the ambient light sensor electrical connector (2).
  2. Install the ambient light sensor (1) to the upper right IP mounting bolt trim cover. Ensure that the retaining tabs are fully engaged.