2008 GMC Acadia Owner's Manual - Page 391

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 your vehicle has wheel locks and an impact wrench is used to remove the wheel nuts, the lock nut or wheel lock key could be damaged. Do not use an impact wrench to remove the wheel nuts if your vehicle has wheel locks. 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, your vehicle could be damaged. When raising your vehicle on a jack, avoid contact with the rear axle control arms. 5-77