Buick LaCrosse Owner's Manual page 429

Never use oil or grease on bolts
or nuts because the nuts might
come loose. The vehicle's wheel
could fall off, causing a crash.
11. Put the wheel nuts back on
with the rounded end of the
nuts toward the wheel. Turn
each nut clockwise by hand
until the wheel is held against
the hub.
12. Lower the vehicle by turning
the jack handle
counterclockwise. Lower the
jack completely.
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
original equipment wheel nut
torque specifications.
13. Tighten the wheel nuts firmly in
a crisscross sequence, as
for
shown.
14. Lower the jack all the way and
remove the jack from under the
vehicle.
15. Tighten the wheel nuts firmly
with the wheel wrench.