Pontiac Montana SV6 2007 Owner's Manual page 385

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.
If you have a traction system, it will improve your
ability to accelerate when driving on a slippery road.
But you can turn the traction system off if you ever
need to. You should turn the traction system off if
your vehicle ever gets stuck in sand, mud, ice, or
snow. See If Your Vehicle is Stuck in Sand, Mud,
Ice, or Snow on page 388. Even if your vehicle has
a traction 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
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 365 and StabiliTrak
System on page 367.
If you do not have a 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.
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