GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the IP upper trim panel. Refer to Instrument Panel Upper Trim Pad Replacement or Defroster Grille Replacement .

  2. Object Number: 310639  Size: SH
  3. Disconnect the sunload (2) and the twilight sentinel (3) sensors from the IP upper trim panel by turning a quarter turn.
  4. Remove the sensors from the trim panel.

  5. Remove the sensors.

Installation Procedure


    Object Number: 310639  Size: SH
  1. Install the sensors.
  2. Install the sensors  (2, 3) to the upper trim panel.
  3. Turn the sensors a quarter turn to secure the sensors.
  4. Install the upper trim panel. Refer to Instrument Panel Upper Trim Pad Replacement or Defroster Grille Replacement .