GM Service Manual Online
For 1990-2009 cars only
  1. Remove the rear fascia. Refer to Rear Bumper Fascia Replacement .

  2. Object Number: 1699865  Size: SH
  3. Disconnect the sensor harness.
  4. Remove the sensor from the sensor housing.
  5. Important: Do not refinish previously painted sensors. Excessive paint build up will cause the sensor to be inoperative.

  6. Paint the new sensor. Refer to Basecoat/Clearcoat Paint Systems
  7. Inspect the paint thickness to ensure it does not exceed 6 mm using a paint thickness gauge suitable for non-ferrous metals. Refer to Paint Gages

  8. Object Number: 1699859  Size: SH

    Important: Do Not grind off alignment tabs.

  9. Sand/grind sonic weld plastic residue from the fascia.

  10. Object Number: 1699866  Size: SH
  11. Apply structural adhesive epoxy, Lord Fusor™ 127EZ or equivalent, to fascia at mating surface.

  12. Object Number: 1699868  Size: SH
  13. Using the alignment tabs, install the sensor housing to the fascia.
  14. Allow adhesive to cure according to manufacturer's directions.

  15. Object Number: 1699865  Size: SH
  16. Install the sensor to the sensor housing.
  17. Connect the electrical harness.
  18. Install the rear fascia. Refer to Rear Bumper Fascia Replacement .