GM Service Manual Online
For 1990-2009 cars only

To replace one of these bulbs, do the following:

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

  2. Object Number: 1257194  Size: B3
  3. Remove the three screws and the lamp assembly.
  4. Remove the bulb socket by turning it counterclockwise.
  5. Remove the bulb from the socket by pressing the bulb and turning it counterclockwise.
  6. Insert a new bulb into the bulb socket.
  7. Replace the bulb socket into the lamp housing. Turn the bulb socket clockwise to secure it.
  8. Reinstall the three screws and attach the taillamp assembly to the vehicle.