If Your Vehicle Is Stuck In Sand, Mud, Ice, Or Snow - Chevrolet 2009 Suburban Owner's Manual

To save fuel, run the engine for only short periods as
needed to warm the vehicle and then shut the engine
off and close the window most of the way to save heat.
Repeat this until help arrives but only when you feel really
uncomfortable from the cold. Moving about to keep warm
also helps.
If it takes some time for help to arrive, now and then
when you run the engine, push the accelerator pedal
slightly so the engine runs faster than the idle speed.
This keeps the battery charged to restart the vehicle
and to signal for help with the headlamps. Do this as
little as possible to save fuel.
If Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow
Slowly and cautiously spin the wheels to free the
vehicle when stuck in sand, mud, ice, or snow.
See Rocking Your Vehicle to Get It Out on page 4-32.
If the vehicle has a traction system, it can often help to
free a stuck vehicle. Refer to the vehicle's traction
system in the Index. If stuck too severely for the traction
system to free the vehicle, turn the traction system off
and use the rocking method.
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. The vehicle can overheat, causing an
engine compartment fire or other damage.
Spin the wheels as little as possible and avoid
going above 35 mph (55 km/h) as shown on the
speedometer.
For information about using tire chains on the vehicle,
see Tire Chains on page 5-84.
4-31