GMC 1996 Sonoma Owner's Manual page 211

If your jack storage cover is
equipped with a hub cap
removal tool, position the
hub cap removal tool in the
notch and pull straight away
from the wheel to avoid
potential damage to the hub
cap and wheel paint or
surface. Remove the
hub cap.
If you have an aluminum or plastic molded hub cap, pry
it off with the chisel end of your wheel wrench.
Use the socket end of the wheel wrench to remove the
wheel nut caps.
Some of the molded plastic hub caps have imitation
wheel nuts molded into them. Don't try
to
remove them.
The wheel wrench socket won't fit these imitation nuts.
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