Pontiac 1999 Grand Prix, Owner'S Manual

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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; 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.
If you have the Enhanced Traction System, keep the
system on. It will improve your ability to accelerate
when driving on a slippery road. Even though your
vehicle has this system, you’ll want to slow down and
adjust your driving to the road conditions. See
“Enhanced Traction System” in the Index.
If you don’t have the Enhanced Traction System,
accelerate gently. Try not to break the fragile traction.
If you accelerate too fast, the drive wheels will spin and
polish the surface under the tires even more.