GM Service Manual Online
For 1990-2009 cars only

To replace a stoplamp/taillamp or turn signal bulb, do the following:

  1. Open the liftgate. See Liftgate/Liftglass for more information.

  2. Object Number: 810218  Size: A3

    Remove the two screws from the taillamp assembly.

  3. Pull the assembly away from the vehicle.

  4. Object Number: 807771  Size: B3
  5. Unclip the wiring harness (A) and remove the three socket retaining screws (B).
  6. Remove the socket by releasing the retaining tabs.
  7. Holding the socket, pull the bulb to release it from the socket.
  8. Push the new bulb into the socket until it clicks.
  9. Reinstall the socket and screws.
  10. Reconnect the wiring harness.
  11. Reinstall the taillamp assembly and tighten the screws.
  12. Close the liftgate.