GM Service Manual Online
For 1990-2009 cars only

To replace one of these bulbs:

  1. Open the tailgate. Tailgate for more information.

  2. Object Number: 809091  Size: A3

    Remove the two rear lamp assembly screws near the tailgate latch strikerpost and pull out the lamp assembly.

  3. Determine which of the following taillamp assemblies applies to your vehicle.
  4. Dually Models


    Object Number: 808942  Size: A3

      Stoplamp/Taillamp/Turn Signal Lamp

      Back-up Lamp

      Stoplamp/Taillamp/Turn Signal Lamp

  5. Press the tab, if the vehicle has one, and turn the bulb socket counterclockwise to remove it from the taillamp assembly.
  6. All Other Models


    Object Number: 1842253  Size: A3

      Stoplamp/Taillamp/Turn Signal Lamp

      Stoplamp/Taillamp/Turn Signal Lamp

      Back-up Lamp

      Sidemarker Lamp

  7. Pull the old bulb straight out from the socket.
  8. Press a new bulb into the socket and turn the socket clockwise into the taillamp assembly.
  9. Reinstall the taillamp assembly.

Taillamps (Chassis Cab Models)


Object Number: 1826793  Size: B3
  1. Backup Lamp

  2. Stoplamp/Taillamp/Turn Signal Lamp

To replace one of these bulbs:

  1. Remove the four screws.
  2. Lift the lens off the lamp assembly.
  3. Turn the old bulb counterclockwise and pull the it straight out from the socket.
  4. Install a new bulb into the socket, turn it clockwise, and press it in until it is tight.
  5. Reinstall the lens and the four screws.