Buick 1993 LeSabre Owner's Manual page 220

If your vehicle has an aluminum wheel with a center
cover, remove it by using the flat end of the wheel
wrench to access the wheel nuts.
I
If your vehicle has a wheel cover, remove it by using the
flat end
of
the wheel wrench. Pry along the edge
of
the
wheel cover until it comes off. Be careful; the rim edges
may be sharp. Don't try to remove it with your bare
hands.
(Note: When replacing any wheel cover, carefully line
up the tire valve stem and the notch in the wheel cover.)