GM Service Manual Online
For 1990-2009 cars only

Sunload and Twilight Sentinel Sensor Replacement for Oldsmobile Aurora 1999

Sunload and Twilight Sentinel Sensor Replacement Buick

Removal Procedure

  1. Partially remove the defroster grille. Refer to Defroster Grille Replacement .

  2. Object Number: 487899  Size: SH
  3. Disconnect the sunload (1) and twilight sentinel (2) sensors from the defroster grille by turning a quarter turn.
  4. Remove the sensors from the defroster grille.

    Remove the defroster grille.

  5. Disconnect the electrical connectors.
  6. Remove the sensors.

Installation Procedure


    Object Number: 487899  Size: SH
  1. Install the sunload and twilight sentinel sensors to the vehicle.
  2. Connect the electrical connectors.
  3. Install the sensors (1, 2) to the defroster grille.
  4. Turn the sensors a quarter turn in order to secure the sensors.
  5. Install the defroster grille. Refer to Defroster Grille Replacement .

Sunload and Twilight Sentinel Sensor Replacement Oldsmobile

Removal Procedure

  1. Remove the defroster grille. Refer to Defroster Grille Replacement .

  2. Object Number: 487873  Size: SH
  3. Disconnect the twilight sentinel connector (2) by turning a quarter turn.
  4. Remove the twilight sentinel sensor.
  5. Disconnect the sunload sensors (3) from the defroster grille by turning a quarter turn.
  6. Remove the sensors from the defroster grille.

  7. Disconnect the electrical connectors (1).
  8. Remove the sensors.

Installation Procedure


    Object Number: 487873  Size: SH
  1. Install the sunload sensors (3) to the defroster grille.
  2. Turn the sensors a quarter turn in order to secure the sensors.

  3. Connect the electrical connectors (1).
  4. Install the twilight sentinel sensor.
  5. Connect the twilight sentinel connector (2) by turning a quarter turn.
  6. Install the defroster grille. Refer to Defroster Grille Replacement .