GM Service Manual Online
For 1990-2009 cars only

Object Number: 1859590  Size: B3
  1. Taillamp

  2. Sidemarker Lamp

To replace one of these bulbs:

  1. Open the liftgate. See Liftgate or Power Liftgate .
  2. Remove the convenience net.
  3. Remove the three hex nuts holding the taillamp assembly in place.
  4. Pull out the taillamp assembly.
  5. Turn the bulb socket counterclockwise and pull it straight out to remove it.
  6. Replace the old bulb with a new one.
  7. Reverse steps 3 through 5 to reinstall the taillamp assembly.
  8. When reinstalling the taillamp assembly, make sure the plastic pin on the taillamp assembly lines up and is inserted correctly into the opening of the vehicle.