Buick 2010 Lucerne - Manual (Page 395)

The tools you will be using include the jack (A) and the
wheel wrench (B).
Removing the Flat Tire and Installing
the Spare Tire
1. Do a safety check before proceeding. See
Changing a Flat Tire on page 6‑90.
2. Turn the wheel wrench counterclockwise to
loosen all the wheel nuts, but do no remove
them yet.
6-93