GMC Jimmy 2004 Owner's Manual page 364

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 you need to,
to get all the rust or dirt off.
5-84
6. Remove any rust or dirt
from the wheel bolts,
mounting surfaces
and spare wheel.
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.
7. Place the spare on the wheel mounting surface.
Tighten each nut by hand until the wheel is held
against the hub. If a nut can't be turned by
hand, use the wheel wrench and see your dealer
as soon as possible.
8. Put the nuts on by
hand. Make sure the
rounded end is
toward the wheel.