GM Service Manual Online
For 1990-2009 cars only
  1. Open the liftgate. See Liftgate for more information.

  2. Object Number: 806555  Size: A3

    Remove the two screws on the inboard taillamp panel.

  3. Pull the lamp directly rearward from the vehicle.
  4. Turn the bulb socket one-quarter of a turn counterclockwise.
  5. Pull the bulb assembly out from the lamp housing.
  6. Unhook the electrical connector by lifting up the tabs and separate the connector from the bulb base.
  7. Install the new bulb into the electrical connector. Push the bulb firmly enough so that the tabs hook over the tab on the bulb.
  8. Reverse the steps to reinstall.
  9. Reinstall the lamp to its pocket by lining up the mounting pin and pushing forward to set the position.
  10. Reinstall the screws removed in Step 2.
  11. Close the liftgate.