Cadillac 2005 DeVille, Owner'S Manual, Page: 250 / 416

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
will have a lot less traction, or grip, and will need to be
very careful.
What is 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 is about
freezing (32°F; 0°C) and freezing rain begins to fall. Try
to avoid driving on wet ice until salt and sand crews
can get there.
Whatever the condition — smooth ice, packed, blowing,
or loose snow — drive with caution.
Traction control improves your ability to accelerate when
driving on a slippery road. Even though your vehicle has
a traction control system, you will want to slow down and
adjust your driving to the road conditions. Under certain
conditions, you may want to turn the traction control
system off, such as when driving through deep snow and
loose gravel, to help maintain vehicle motion at lower
speeds. See Traction Control System (TCS) on page 4-8.
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