GMC SIERRA 1994 Manual page 249

NOTICE:
~ ~ ~~ ~~
Spinning your wheels can destroy parts of your vehicle as well as
the tires. If you spin the wheels too fast while shifting your back
and forth, you can destroy your
.
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
,
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 is in gear. If
that doesn't get you out after a few tries, you may need to be towed out. Or,
you can use your recovery hooks, if your vehicle has them. If you do need
to be towed out, see "Towing Your Vehicle" in the Index.
Using the Recovery Hooks
If you ever get stuck in sand, mud, ice or snow, your vehicle may be
equipped with recovery hooks. The recovery hooks are provided at the front
of your vehicle. You may need to use them if you're stuck off-road and
need to be pulled to some place where you can continue driving.
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