GM Service Manual Online
For 1990-2009 cars only

To replace the center high-mounted stoplamp bulb:

  1. Open the liftgate. See Liftgate .

  2. Object Number: 1579709  Size: B2
  3. Remove the center trim located near the top of the liftgate.
  4. Turn the bulb socket counterclockwise and pull it straight out of the lamps assembly.

  5. Object Number: 1579710  Size: B2
  6. Pull the old bulb straight out of the bulb socket.
  7. Push the new bulb straight into the bulb socket until it clicks.
  8. Push the bulb socket straight into the lamp assembly and turn it clockwise to lock it into place.
  9. Reinstall the center trim.