Pontiac G6 2009 Owner's Manual page 348

12. Put the wheel nuts back on with the rounded end of
the nuts toward the wheel. Tighten each nut by
hand until the wheel is held against the hub.
{
CAUTION:
Never use oil or grease on bolts or nuts because
the nuts might come loose. The vehicle's wheel
could fall off, causing a crash.
5-92
13. Lower the vehicle by turning the wheel wrench
counterclockwise. Lower the jack completely.