GMC 2011 Yukon XL Denali Owner's Manual page 415

Use the jacking pad (E) provided
on the rear axle. Turn the wheel
wrench (D) clockwise to raise the
vehicle. Raise the vehicle far
enough off the ground so there
is enough room for the spare tire
to clear the ground.
5. Remove all of the wheel nuts.
6. Take off the flat tire.
WARNING
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause an accident. When
changing a wheel, remove any
rust or dirt from places where the
wheel attaches to the vehicle. In
an emergency, use a cloth or a
paper towel to do this; but be sure
to use a scraper or wire brush
later, if needed, to get all the rust
or dirt off. See If a Tire Goes Flat
on page 10 69.
Vehicle Care
7. Remove any rust or dirt from the
wheel bolts, mounting surfaces
and spare wheel.
WARNING
Never use oil or grease on bolts
or nuts because the nuts might
come loose. The vehicle's wheel
could fall off, causing a crash.
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