Cadillac 2009 Escalade EXT Owner's Manual page 469

6. Take off the flat tire.
5. Remove all the
wheel nuts.
CAUTION:
{
Rust or dirt on a wheel, or on the parts to which it
is fastened, can make wheel nuts become loose
after time. The wheel could come off and cause
an accident. When changing a wheel, remove any
rust or dirt from places where the wheel attaches
to the vehicle. In an emergency, 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. See Changing a Flat Tire on
page 6-77.
7. Remove any rust or dirt
from the wheel bolts,
mounting surfaces, and
spare wheel.
6-85