If Your Vehicle Is Stuck In Sand, Mud, Ice, Or Snow - GMC T-Series 2007 Owner's Manual

You will need well-charged batteries to restart the
vehicle, and possibly for signaling later on with the
headlamps. Let the heater run for a while.
Then, shut the engine off and close the window
almost all the way to preserve the heat. Start
the engine again and repeat this only when you
feel really uncomfortable from the cold. But do it
as little as possible. Preserve the fuel as long
as you can. To help keep warm, you can get
out of the vehicle and do some fairly vigorous
exercises every half hour or so until help comes.
If Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow
In order to free your vehicle when it is stuck, you
will need to spin the wheels, but you do not
want to spin the wheels too fast. The method
known as rocking can help you get out when you
are stuck, but you must use caution.
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CAUTION:
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If you let your vehicle's tires spin at high
speed, they can explode, and you or
others could be injured. And, the
transmission or other parts of the vehicle
can overheat. That could cause an engine
compartment fire or other damage. When
you are stuck, spin the wheels as little as
possible. Do not spin the wheels above
35 mph (55 km/h) as shown on the
speedometer.
Notice: Spinning the wheels can destroy
parts of your vehicle as well as the tires. If you
spin the wheels too fast while shifting the
transmission back and forth, you can destroy
the transmission.