Pontiac 1999 Firebird Owner's Manual page 242

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. Replace the wheel nuts with the rounded end of the
nuts toward the wheel. Tighten each nut by hand
until the wheel is held against the hub.
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8. Lower the vehicle by turning the wheel wrench
counterclockwise. Lower the jack completely.
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