GM Service Manual Online
For 1990-2009 cars only

To replace a taillamp, turn signal or stoplamp bulb, do the following:

  1. Open the trunk. See Trunk for more information.
  2. Remove the convenience net if the vehicle has one.
  3. Remove the three plastic wing nuts (A). One wing nut is located on top of the carpet. The other two are located underneath the carpet.
  4. Pull the taillamp housing (B) away from the body of the vehicle.
  5. Squeeze the tab on the socket and turn the socket counterclockwise.
  6. Pull out the socket.
  7. Pull the old bulb out of the socket. There are two bulbs on each taillamp.
  8. Push in a new bulb.
  9. Reverse these steps to reinstall the lamp assembly.