2006 GMC Yukon Owner's Manual - Page 459

4. Remove all the wheel nuts and take off the flat tire. Rear Position - 1500 Series Rear Position - 2500 Series Rear Tire Flat: If the flat tire is on a rear tire of the vehicle, you will need to use the jack handle (C) and both jack handle extensions (D). Attach the wheel wrench to the jack handle extensions. Attach the jack handle to the jack. Use the jacking pad provided on the rear axle. Turn the wheel wrench clockwise to raise the vehicle. Raise the vehicle far enough off the ground so there is enough room for the spare tire to clear the ground. 5-85