Chevrolet Impala 2007 Impala Owner's Manual page 385

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.
8. Reinstall 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.
9. Lower the vehicle by turning the jack handle
counterclockwise. Lower the jack completely.
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