Hummer 2007 H3 - Manual (Page 400)

6. Remove all the
wheel nuts and take
off the flat tire.
{ CAUTION:
Rust or dirt on the wheel, or on the parts
to which it is fastened, can make the
wheel nuts become loose after 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.
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