GM Service Manual Online
For 1990-2009 cars only

To change one of these bulbs, do the following:

  1. Open the trunk. See Trunk for more information.
  2. Remove the three retaining screws from the taillamp assembly.

  3. Object Number: 1225852  Size: B4
  4. Slide the taillamp assembly back and remove it from the quarter panel.

  5. Object Number: 1225896  Size: B4
  6. Remove the bulb socket by turning it counterclockwise.
  7. Pull the bulb from the socket and replace it with the appropriate bulb.
  8. Reverse the steps to reinstall the taillamp assembly.