GMC 1998 Safari Owner's Manual page 200

Driving too fast through large water puddles or even
going through some car washes can cause problems, too.
The water may affect your brakes. Try to avoid puddles.
But if you can't, try
to
slow down before you hit them.
Wet brakes can cause accidents. They won't work
as wen in a quick stop and may
cause
pnIling to
one side. You could lose control of the vehicle.
After driving through a large puddle of water or
a car wash, apply your brake pedal lightly until
your brakes work normally
Hydroplaning
Hydroplaning is dangerous.
So
much water can build up
under your tires that they can actually ride
on the
water.
This
can happen if the road is wet
enough and
you're
going fast enough. When your vehicle is hydroplaning,
it has little or no contact with the road.
Hydroplaning doesn't happen often. But it can if your
tires do not have much tre,ad or
if
the pressure in one or
more is low. It can happen if a lot of water is standing on
the road
If you can
see reflections
from
trees, telephone
poles or other vehicles, and raindrops "dimple" the
water's surface,
there could be hydroplaning.
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