GMC 2008 Acadia - 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.
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