GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 LeSabre 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Sunload and Twilight Sentinel Sensor Replacement

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
  2. Disconnect the sunload (2) and the twilight sentinel (3) sensors from the IP upper trim panel by turning a quarter turn.

    3. Remove the sensors from the trim panel.

  3. 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 .