Chevrolet 1993 Cavalier Owner's Manual page 161

If
You're Caught in a Blizzard
If you are stopped by heavy snow, you
could be in a serious situation. You
should probably stay with your vehicle
unless you know for sure that you are
near help and you can hike through the
snow. Here are some things to do to
summon help and keep yourself and
your passengers safe:
Turn on your hazard flashers.
Tie a red cloth to your vehicle to alert
police that you've been stopped by the
snow.
Put on extra clothing or wrap a
blanket around you. If you have no
blankets or extra clothing, make body
insulators from newspapers, burlap
bags, rags, floor mats-anything you
can wrap around yourself or tuck
under your clothing to keep warm.
You can run the engine to keep warm,
but be careful.
I
A
a
-C
L
Snow can trap exhaust gases
L under your vehicle. This can
cause deadly CO (carbon
monoxide) gas to get inside. CO
could overcome you and kill you.
You can't see it or smell it, so you
might not know it was in your
vehicle. Clear away snow from
around the base of your vehicle,
especially any that is bloclng your
exhaust pipe. And check around
again from time to time to be sure
snow doesn't collect there.
Open a window just a
little on the
side
of
the vehicle that's away from
the wind. This will help keep CO
out.