Buick 2014 LaCrosse Owner's Manual page 320

The jack and tools are stored below
the spare tire.
Place the tools next to the tire being
changed.
1. Do a safety check before
proceeding. See
for more
information.
2. Turn the wheel wrench
counterclockwise to loosen the
wheel nut caps.
If needed, finish loosening them
by hand. The nut caps will not
come off of the wheel cover.
The edge of the wheel cover
could be sharp, so do not try to
remove the cover with your bare
hands. Do not drop the cap or
lay it face down, as it could
become scratched or damaged.
Store the wheel cover in the
trunk until you have the flat tire
repaired or replaced.
3. Turn the wheel wrench
counterclockwise to loosen all of
the wheel nuts, but do not
remove them yet.
Make sure that the jack lift head
is in the correct position or you
may damage your vehicle. The
repairs would not be covered by
your warranty.
4. Position the jack head, as
shown.
Set the jack to the necessary
height before positioning it below
the jacking point.
5. Attach the jack lift assist tool to
the jack by fitting both ends of
the jack and tool over one
another.