Pontiac 2003 Montana Owner's Manual page 304

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.
Whatever the condition
-
smooth ice, packed, blowing
or loose snow
-
drive with caution.
If you have traction control, keep the system on. 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 system off if
your vehicle ever gets stuck in sand, mud, ice, or snow.
See If You Are Stuck: In Sand, Mud, Ice or Snow on
page 4-30. Even though your vehicle has a traction
system you'll want to slow down and adjust your driving
to the road conditions. See Traction Control System
(TCS) on page 4-9.
If you don't have a traction system, accelerate gently.
Try not to break the gentle traction. If you accelerate too
fast, the drive wheels will spin and polish the surface
under the tires even more.
Unless you have the anti-lock braking system, you'll
want to brake very gently, too. (If you do have anti-lock,
see Braking on page 4-6. This system improves your
vehicle's stability when you make a hard stop on a
system or not, you'll want to begin stopping sooner than
you would on dry pavement. Without anti-lock brakes,
if you feel your vehicle begin to slide, let up on the
brakes a little. Push the brake pedal down steadily to
get the most traction you can.
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