Chevrolet 2003 Impala Owner's Manual page 240

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.
Keep your traction control system on. It improves your
ability to accelerate when driving on a slippery road.
Even though your vehicle has a traction control system,
you'll want to slow down and adjust your driving to
the road conditions. See Traction Control System (TCS)
(3800 V6 Engine) on page 4-9.
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
slippery road.) Whether you have the anti-lock braking
svstem or not. vou'll want to begin stoppin;
sonnet- 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.
Remember, unless you have anti-lock, if you brake
so hard that your wheels stop rolling, you'll just slide.
Brake so your wheels always keep rolling and you can
still steer.
Whatever your braking system, allow greater
following distance
on
any slippery road.
Watch for slippery spots. The road might be fine
until you hit a spot that's covered with ice. On
an otherwise clear road, ice patches may appear in
shaded areas where the sun can't reach: around
clumps of trees, behind buildings or under bridges.
Sometimes the surface of a curve or an overpass
may remain icy when the surrounding roads
are clear. If you see a patch of ice ahead of you,
brake before you are on it. Try not to brake
while you're actually on the ice, and avoid sudden
steering maneuvers.
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