Cadillac 2009 DTS Owner's Manual page 383

CAUTION:
{
Getting under a vehicle when it is jacked up is
dangerous. If the vehicle slips off the jack, you
could be badly injured or killed. Never get under a
vehicle when it is supported only by a jack.
CAUTION:
{
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 jack handle counterclockwise to lower the
jack lift head until the jack fits under the vehicle.
6. Raise the jack until the metal flange fits firmly into
the channel of the jack head.
7. Put the spare tire near you.
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