Chevrolet 2005 Silverado 1500 Pickup Owner's Manual page 499

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.
6. Remove any rust or dirt
from the wheel bolts,
mounting surfaces
and spare wheel.
8. Tighten each wheel nut by hand. Then use the
wheel wrench to tighten the nuts until the wheel
is held against the hub.
7. After mounting the
spare, put the wheel
nuts back on with the
rounded end of the nuts
toward the wheel.
5-107