GMC 1994 Yukon Owner's Manual page 236

If your vehicle has
wheel nut caps, use
the wheel wrench and
ratchet, with DOWN
facing you, to unscrew
and take them off.
Then take the hub cap off.
If the wheel has a trim ring, remove it by using the flat end of the wheel
wrench.
If the wheel has a
smooth center piccc
a center piece with
recessed nuts, place
the flat end of the
wheel wrench in the
slot on the wheel an(
pry o u t gently.
Using the wheel
wrench and ratchet,
with DOWN facing
you, loosen all the
wheel nuts.
Don't remove them
yet.
Position the jack
under the vehicle.
or
1
5 -32