Cadillac 2012 CTS Owner's Manual page 407

3. Remove the wing nut (C) that
holds the tire sealant and
compressor kit (A) in place.
4. Remove the tire sealant and
compressor kit (A) from the foam
container (B).
To store the tire sealant and
compressor kit, reverse the steps.
A. Wing Nut
B. Spare Tire
C. Jack
D. Wheel Wrench
E. Extension (If Equipped)
F. Strap
To access the spare tire and jacking
equipment:
1. Remove the spare tire cover.
2. Remove the stow rod cap by
pulling it straight up off of
the rod.
3. Turn the wing nut (A) on the
compact spare tire (B)
counterclockwise to remove.
4. Remove the spare tire and place
it next to the flat tire.
5. The tools you will be using next
include the jack (C), wheel
wrench (D), and extension (E),
if the vehicle has one.