Hummer 2006 H2 Owner's Manual page 418

12. Tighten each wheel nut by hand. Then use the
ratchet to tighten the nuts, with the UP mark
facing you, clockwise until the wheel is held against
the hub.
You will not be tightening the nuts fully yet.
5-88
Front Position – Jack A
13. Lower the vehicle by turning the ratchet
counterclockwise, with the DOWN mark facing you.
Then lower the jack completely.
Rear Position – Jack A