Pontiac G3 2009 Owner's Manual page 280

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CAUTION:
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 Changing a Flat Tire on page 5-70.
5-76
13. Place the compact spare tire on the wheel-mounting
surface.
12. Remove any rust or dirt
from the wheel bolts,
mounting surfaces
and spare wheel.