Chevrolet Silverado 2007 Owner's Manual page 597

CAUTION:
{
Never use oil or grease on studs or nuts.
Because the nuts might come loose. The
vehicle's wheel could fall off, causing a
serious accident.
9. Put the wheel nuts back on with the rounded
end of the nuts toward the wheel.
10. Tighten each wheel nut by hand. Then use
the wheel wrench to tighten the nuts until the
wheel is held against the hub.
11. Turn the wheel wrench counterclockwise to
lower the vehicle. Lower the jack completely.
CAUTION:
{
Incorrect wheel nuts or improperly
tightened wheel nuts can cause the wheel
to come loose and even come off. This
could lead to an accident. Be sure to use
the correct wheel nuts. If you have to
replace them, be sure to get new GM
original equipment wheel nuts. Stop
somewhere as soon as you can and have
the nuts tightened with a torque wrench to
the proper torque specification. See
Capacities and Specifications on page 626
for wheel nut torque specification.
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