Pontiac 2004 Bonneville Owner's Manual page 358

The tools you will be using include the jack (A) and
wheel wrench (B).
5-82
Removing the Wheel Covers and
Wheel Nut Caps
If your vehicle has aluminum wheels and a center cover
hides the wheel nuts, remove the center cover by
using the flat end of the wrench to pry it off. Do not drop
the cover or lay it face down, as it could become
scratched or damaged. Do not use a hammer or mallet
on this type of cover.