If Your Vehicle Is Stuck In Sand, Mud, Ice, Or Snow; Rocking Your Vehicle To Get It Out - GMC TopKick 2007 Owner's Manual

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 your wheels too fast. The method
known as rocking can help you get out when you
are stuck, but you must use caution.
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.
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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.

Rocking Your Vehicle to Get It Out

First, turn the steering wheel left and right. That will
clear the area around the front wheels. If you have
a four-wheel-drive vehicle, shift into 4HI. See
Four-Wheel Drive on page 117. If your vehicle has
traction control, you should turn the traction control
system off. See Traction Control System (TCS) on
page 212. Then shift back and forth between
REVERSE (R) and a forward gear, or with a manual
transmission, between FIRST (1) or SECOND (2)
and REVERSE (R), spinning the wheels as little as
possible. Release the accelerator pedal while you
shift, and press lightly on the accelerator pedal
when the transmission is in gear. By slowly spinning
the wheels in the forward and reverse directions,
you will cause a rocking motion that may free your
vehicle. If that does not get your vehicle out after a
few tries, it may need to be towed out. If your
vehicle does need to be towed out, see Towing
Your Vehicle on page 237.