GM Service Manual Online
For 1990-2009 cars only

To replace a taillamp bulb, do the following:

  1. Open the liftgate/tailgate. See Liftgate/Tailgate for more information.

  2. Object Number: 807630  Size: A3

    Remove the two screws from the lamp assembly.

  3. Pull the assembly away from the vehicle.
  4. Turn the socket counterclockwise to remove it. Push the tab in while you turn the socket counterclockwise.
  5. Holding the base of the bulb, pull the bulb straight out of the socket.
  6. Push the new bulb straight into the socket until it clicks.
  7. Reverse Steps 1 through 5 to reinstall.