Cadillac 2012 CTS Owner's Manual page 411

5. Turn the wheel wrench
counterclockwise to lower the
jack lift head until the jack fits
under the vehicle.
6. Raise the jack by turning the
wheel wrench clockwise until the
slots in the jack head fit into the
metal flange located behind the
V shaped locating notches on
the plastic molding as shown.
7. Put the compact spare tire
near you.
8. Raise the vehicle by turning the
wheel wrench clockwise. Raise
the vehicle far enough off the
ground for the compact spare
tire to fit under the vehicle.
9. Remove all of the wheel nuts
and the flat tire.