GMC 2003 Envoy - Manual (Page 277)

If You Are Stuck: In Sand, Mud,
Ice or Snow
In Ofder 10 free your \fehicle when it is stuck, you will
need to spin the wheels, but you cton‘t want lo spin yout
wheels too iasl. The method known as "rocking" can
help you get oul when youVe stuck, but you must
use caution.
A CAUTION:
Г you let your tires spin al high speed, they
can exptode, and you or others coutd be
injured. And, the transmission or other parts ot
the vehicle can overheat. That could cause an
engine compartment ^ire or Other damage.
When you^re stuck, spin the wheels as tittle as
possible. Don't spin the wheels above 35 mph
(5S Km/h) as shown on the speedometer«
Notice: Spinning your wheels can destroy parts of
your vehrcte as well as thm tires. It you spin the
wheels too fast while shifting your transmission
bach and forth, you can rlestroy your transmtssionr
For mtormalion about using tire chains on your
vehicle, see Tr,re
Chains on p^ge 5-64,
Rocking Your Vehicle To Get It Out
First, turn your steering wheel left and right. Thai will
dear ihe ar-ea grourid your front wheels. If you have
a
lour- wheel-drive vehicle, shtfl into 4HI Then shift
back and forth
hotwean REVERSE (R) and a lorward
gear, spinning the wheels as little as possible. Release
the accetgratqr pedal while you shift, snd press lightly
on the accelerator pedal when lha transmission is
in gear. By slowly spinning your wheels In the (orward
and reverse directions, you will cause a rocking
motion that may free your vehicle. It that doesn't gel
you oul after a few Iriej, you may need to bo lowed out.
If you do need to be lowed out, see Tbwírig
Your
Vehic(e on page 4-45.
4-44