GMC 2003 Sonoma Owner's Manual page 340

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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.
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8. Put the nuts on by
hand. Make sure the
cone-shaped end
is toward the wheel.
9. Lower the vehicle by turning the jack handle
counterclockwise. Lower the jack completely.