Cadillac 2010 CTS Sport Sedan Owner's Manual page 398

9. Remove all the wheel nuts and
the flat tire.
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
Never use oil or grease on bolts
or nuts because the nuts might
come loose. The vehicle's wheel
could fall off, causing a crash.
(Continued)
.
10. Remove any rust or dirt from
the wheel bolts, mounting
surfaces, and spare wheel.
11. Install the spare tire.
12. Put the wheel nuts back on
with the rounded end of the
nuts toward the wheel.