Oldsmobile 1997 Aurora Owner's Manual page 242

The tools you'll be using include the jack (A) and the
wheel wrench (B).
Insert the hooked end of the wheel wrench in one of the
two small notches in the center cover and pry the cover
off. Do not drop the cover or lay it face down, as it
could be scratched or damaged.
Do not use a hammer or mallet to install the cover
when replacing the cover after the wheel is put back on
the vehicle.
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