Buick 2010 Lucerne Owner's Manual page 402

12. Lower the vehicle by turning the jack handle
counterclockwise. Lower the jack completely.
6-96
WARNING:
{
Wheel nuts that are improperly or incorrectly
tightened can cause the wheels to become loose
or come off. The wheel nuts should be tightened
with a torque wrench to the proper torque
specification after replacing. Follow the torque
specification supplied by the aftermarket
manufacturer when using accessory locking wheel
nuts. See Capacities and Specifications on
page 6-117 for original equipment wheel nut
torque specifications.