Pontiac G5 Owner's Manual page 344

8. Raise the vehicle by turning the jack handle
clockwise. Raise the vehicle far enough off
the ground so there is enough room for
the compact spare tire to fit under the vehicle.
344
9. Remove all of the
wheel nuts.
CAUTION:
{
Rust or dirt on the wheel, or on the parts
to which it is fastened, can make the
wheel nuts become loose after time. The
wheel could come off and cause an
accident. When you change a wheel,
remove any rust or dirt from the places
where the wheel attaches to the vehicle. In
an emergency, you can use a cloth or a
paper towel to do this; but be sure to use
a scraper or wire brush later, if needed, to
get all the rust or dirt off.