Pontiac 1999 Firebird - Manual (Page 242)

yellow blue
5-32
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.
8. Lower the vehicle by turning the wheel wrench
counterclockwise. Lower the jack completely.