GM Service Manual Online
For 1990-2009 cars only

Object Number: 1579712  Size: B3
  1. Stoplamp/Taillamp/Turn Signal Lamp

  2. Back-up Lamp

To replace one of these bulbs:

  1. Open the liftgate. See Liftgate .

  2. Object Number: 1826290  Size: B4
  3. Remove the cover in the rear cargo area of the vehicle to access the bulbs.
  4. Turn the bulb socket counterclockwise and pull it straight out of the lamp assembly.
  5. Pull the bulb straight out of the socket.
  6. Install a new bulb. When installing the bulb socket into the assembly, line up the tabs with the slots in the bulb assembly.
  7. Push the bulb socket straight into the lamp assembly and turn it clockwise to lock it into place.
  8. Reinstall the cover.