2005 Buick Rendezvous Owner's Manual - Page 401

{CAUTION: Getting under a vehicle when it is jacked up is dangerous. If the vehicle slips off the jack you could be badly injured or killed. Never get under a vehicle when it is supported only by a jack. 4. Attach the folding wrench to the jack, and turn the wrench clockwise to raise the jack head 3 inches (7.6 cm). {CAUTION: Raising your vehicle with the jack improperly positioned can damage the vehicle and even make the vehicle fall. To help avoid personal injury and vehicle damage, be sure to fit the jack lift head into the proper location before raising the vehicle. 5. Raise the vehicle by turning the folding wrench clockwise in the jack. Raise the vehicle far enough off the ground so that there is enough room for the spare tire to fit under the wheel well. 6. Remove all the wheel nuts and take off the flat tire. 5-81