Buick 2008 Lucerne Owner's Manual page 356

6. Put the compact spare tire near the flat tire.
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.
5-88
7. Raise the vehicle by turning the jack handle
clockwise. Raise the vehicle far enough off the
ground for the compact spare tire to fit under the
vehicle.