Cadillac 2009 CTS Owner's Manual page 410

CAUTION:
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Raising your vehicle with the jack improperly
positioned can damage the vehicle and even make
the vehicle fall. To help avoid personal injury and
vehicle damage, be sure to fit the jack lift head into
the proper location before raising the vehicle.
Notice: If you position the jack under the rocker
molding and attempt to raise the vehicle, you could
break the molding and/or cause other damage to
your vehicle. Always position the jack so that when
the jack head is raised, it will fit firmly in the
notch located inboard from the rocker molding.
5. Turn the wheel wrench counterclockwise to lower
the jack lift head until the jack fits under the
vehicle.
5-104
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.