Buick Lucerne 2010 Owner's Manual page 397

5. Position the jack and raise the jack head until it fits
firmly on the ridge in the vehicle's frame nearest
the flat tire. Do not raise the vehicle yet.
6. Put the compact spare tire near the flat tire.
WARNING:
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.
7. Turn the jack handle clockwise to raise the vehicle.
Raise the vehicle far enough off the ground for the
compact spare tire to fit under the vehicle.
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