Pontiac 1993 Sunbird Owner's Manual page 147

Problems on the
Rocking Your Vehicle
to Get
it Out:
First, turn your steering wheel left and
right. That will clear the area around
your front wheels. Then shift back and
forth between R (Reverse) and a
forward gear (or with a manual
transaxle, between First or Second gear
and Reverse), spinning the wheels as
little as possible. Release the accelerator
pedal while you shift, and press lightly
on the accelerator pedal when the
trimaxle is in gear. If that doesn't get
you out after a few tries, you may need
to be towed out. If you do need to be
towed out, see Towing Your Vehicle in
the
Index.