Pontiac 1993 Grand Am Owner's Manual page 157

Your Driving and the Road
Winter Driving
Here are some tips for winter driving:
Have your Pontiac in good shape for
winter. Be sure your engine coolant
mix is correct.
Snow tires can help in loose snow, but
they may give you less traction on ice
than
regular tires. If you do not expect
to be driving in deep snow, but may
have to travel over ice, you may not
want to switch to snow tires at all.
.a. 156
You may want to put winter
emergency supplies in your trunk.
Include an ice scraper, a small brush
or broom, a supply of windshield
washer fluid, a rag, some winter outer
clothing, a small shovel, a flashlight, a
red cloth, and a couple of reflective
warning triangles. And, if you will be
driving under severe conditions,
include a small bag of sand, a piece of
old carpet or a couple of burlap bags
to help provide traction. Be sure you
properly secure these items in your
vehicle.
Driving on Snow or Ice
Most of the time, those places where
your tires meet the road probably have
good traction.
However, if there is snow or ice
between your tires and the road, you can
have a very slippery situation. You'll
have a lot less traction or "grip" and
will need to be very careful.
What's the worst time for this? "Wet
ice." Very cold snow or ice can be slick
and hard to drive on. But wet ice can be
even more trouble because it may offer
the least traction of all. You can get wet
ice when it's about freezing (32°F;
OOC)
and freezing rain begins to fall. Try to
avoid driving on wet ice until salt and
sand crews can get there.