The 2005 GMC Yukon is a full-size sport utility vehicle. The vehicle features a central locking system that controls the doors and liftgate. A key remote may be used to unlock and lock the doors and liftgate automatically. The ignition key may be used to manually unlock and lock all doors and the liftgate. The liftgate may become stuck and difficult to open if the vehicle isn't properly parked or there is a buildup of dirt in the locking mechanism.
Press the "Unlock" button on the key remote to unlock all doors on the vehicle. All doors must be unlocked to use the "Unlock" button located on the handle of the liftgate. Press the button on the gate and pull open.
Check the shift lever. The vehicle must be completely in the "Park" position to release and open the gate.
Spray a lubricant inside the key lock on the door. Dirt and grime can build up in the keyhole, making it difficult to turn.
Insert the ignition key into the key lock on the gate and turn counterclockwise. Wiggle the key back and forth to release the locking mechanism.
