2009 GMC Yukon Owner's Manual - Page 453

Taillamps, Turn Signal, Stoplamps and Back-up Lamps If you vehicle is a Two-mode Hybrid, see the supplement for the bulb changing procedure. A. Taillamp/Turn Signal Lamp B. Back-up Lamp C. Stoplamp/Taillamp 2. Remove the two screws from the taillamp assembly. 3. Pull the taillamp assembly rearward until you disengage the inner pins on the taillamp assembly from the vehicle. 4. Press the release tab, if bulb socket has one, and turn the bulb socket counterclockwise to remove it from the taillamp assembly. To replace one of these bulbs: 1. Open the liftgate. See Power Liftgate on page 2-14. 5. Pull the old bulb straight out from the bulb socket. 6. Press a new bulb into the bulb socket and insert it into the taillamp assembly. Turn the bulb socket clockwise into the taillamp assembly until it clicks. 7. Reinstall the taillamp assembly. When reinstalling, make sure to line up the pins on the taillamp assembly with the vehicle. If you do not do this, you will not be able correctly install the taillamp assembly. 5-57