GMC Jimmy 2004 Owner's Manual page 360

5-80
If you have this feature,
the locking wheel nut can
be removed by snapping
the rubber weather
cover off the face of the
lock case.
Insert the key and pull the
lock case straight off. It is
not necessary to turn
the key.
Put the spare tire near the flat tire.
The tools you'll be using include the jack (A) and wheel
wrench (B). Your vehicle may also have an optional
hub cap removal tool.