GM Service Manual Online
For 1990-2009 cars only
  1. Open the trunk.
  2. On either side of the rear of the trunk is a plastic retainer that holds the cargo net and taillamp assembly in place. Remove the retainer by turning it counterclockwise.

  3. Object Number: 811081  Size: A2
  4. Remove the plastic retaining screws on the trunk's interior.
  5. Pull back the trunk trim panel.

  6. Object Number: 811085  Size: B3
  7. Beneath the trim panel are three nuts that secure the taillamp assembly. Remove the nuts only from the side you want to access. The turn signal and stoplamp can now be accessed.

  8. Object Number: 810955  Size: B3
  9. Pull the taillamp assembly away from the vehicle.

  10. Object Number: 811057  Size: A3
  11. Remove the bulb socket assembly by turning the socket one-quarter turn counterclockwise and pulling it out.

  12. Object Number: 810913  Size: A3
  13. Once the socket has been removed, pull the bulb straight out to remove it from the socket.
  14. Replace it with a new bulb.
  15. Reverse Steps 1 through 8 to reinstall the taillamp assembly.