GMC 2003 Sierra - Manual (Page 331)

Than, shut the engine off and closa the window aimost
all Ihg wSy lo preserve the heat. Stfirt the engine
again and repeat this qnly when you teol nearly
uncomldhabte Tram the cold But do rt as iittie as
possible. Preserve ifie Tuel as long as you can. To help
keep warrn^ you can get out of ihe vehicle amd do
some fairty vigorous exercises every hah hour or so until
help comes.
II You Are Stuck; In Sand, Mud, Ice
or Snow
fr order TO free your vehicie when it is sluch, you will
need lo spin the wheefs, but you doiri''l want to spin your
wheeis too fasL The method known as “rocking" can
help you get out when you're stuck, hul you must
use cautian.
Д CAUTION;
If you let your tires spin at high speed, they
can evpIodeT and you or others could be
injured. And^ the transmission or other parts of
the vehicle can overheaL That could cause an
engine comparljnertt fire or other damage.
When you're stuck, spirt the wheels as liltle as
possible. Don't spin the wheels above
mph {55 km/hj as shown on the
speedometer..
NoticB: Spinning your wheels can destroy parts Of
your vehicle as well as the tires. If you spin the
wheels toe fast while shitting your transmission
back and forth, you can destroy your transmission.
For more inform alien about using lire Chains on your
vehicle, see Tire Chains on page 5-82.
4-5P