2010 GMC Acadia Owner's Manual - Page 386

10-70 Vehicle Care could be damaged. Do not use an impact wrench to remove the wheel nuts if this vehicle has wheel locks. If the vehicle has aluminum wheels, remove the wheel nut caps using the wheel wrench. { WARNING 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. 3. Loosen the wheel nuts - but do not remove them - using the lug wrench. For wheels with a wheel lock key, use the wheel lock key between the lock nut and lug wrench. The key is supplied in the front passenger door pocket. Notice: If this vehicle has wheel locks and an impact wrench is used to remove the wheel nuts, the lock nut or wheel lock key 4. To identify the appropriate jacking location, find the triangle (A) about 12 inches (30.5 cm) from the front tire or (B) about 10.5 inches (27 cm) from the rear tire. The triangle is located near each wheel on the vehicle's exterior. Notice: If a jack is used to raise the vehicle without positioning it correctly, the vehicle could be damaged. When raising the vehicle on a jack, avoid contact with the rear axle control arms. 5. Do not raise the vehicle yet. Put the compact spare tire near you. { WARNING 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. 6. Attach the lug wrench to the jack, and turn the wrench clockwise to raise the jack head 3 inches (7.6 cm).