Hummer 2006 H2, Owner'S Manual

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CAUTION:
Rust or dirt on the wheel, or on the parts to
which it is fastened, can make the wheel nuts
become loose after a time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
the places where the wheel attaches to the
vehicle. In an emergency, you can 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.
9. Remove any rust or dirt
from the wheel bolts,
mounting surfaces
and spare wheel.
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CAUTION:
Never use oil or grease on studs or nuts. If
you do, the nuts might come loose. Your wheel
could fall off, causing a serious accident.
10. Install the spare tire.
11. Put the wheel nuts back on with the rounded end of
the nuts toward the wheel.
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