Chevrolet 2007 Express 2007 Express Owner's Manual page 371

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. Remove any rust
or dirt from the
wheel bolts,
mounting surfaces
and spare wheel.
9. Lower the vehicle by turning the jack handle
counterclockwise. Lower the jack completely.
8. Put the wheel nuts
back on with the
rounded end of the
nuts toward the
wheel. Tighten
each wheel nut by
hand until the
wheel is held
against the hub.
371