2001 GMC Sierra 1500 Pickup Owner's Manual - Page 333

4. Remove all the wheel nuts and take off the flat tire. Rear Position 3. Make sure the jack head is positioned so that the rear axle is resting securely between the grooves that are on the jack head. 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 fit under the wheel well. 5. Remove any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. 5-27