Hummer 2008 H2 Owner's Manual page 428

CAUTION:
{
Never use oil or grease on studs or nuts.
Because the nuts might come loose.
The vehicle's wheel could fall off, causing
a crash.
11. Install the spare tire.
12. Put the wheel nuts back on with the rounded end
of the nuts toward the wheel.
5-92
13. Tighten each wheel nut by hand. Then use the
wheel wrench to tighten the nuts by turning it
clockwise until the wheel is held against the hub.
You will not be tightening the nuts fully yet.
14. Lower the vehicle by turning the wheel wrench
counterclockwise. Then lower the jack completely.