GM Service Manual Online
For 1990-2009 cars only

Object Number: 1646649  Size: B3
  1. Taillamp

  2. Back-up Lamp

To replace an auxiliary taillamp or back-up lamp bulb:

  1. Open the trunk. See Trunk .

  2. Object Number: 1646644  Size: B3
  3. Remove the three fasteners from the trunk trim.
  4. Pull back the trunk trim to access the bulbs.
  5. Turn the bulb socket counterclockwise to remove it.
  6. Pull the bulb straight out.
  7. Push the bulb straight in until it clicks.
  8. Push the bulb socket in and turn it clockwise to secure it.
  9. Put the trunk trim and three fasteners back into place.