GMC 1995 Safari Owner's Manual page 202

Put on the spare tire.
Put the nuts on by
hand. Make sure the
cone-shaped end is
toward the wheel.
Tighten each nut by
hand until the wheel is
held against the hub.
If a nut can't be turned
by hand, use the
extension and see your
dealer as soon as
possible.
Lower the vehicle by
turning the ratchet
counterclockwise.
Lower the jack
completely.
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