GMC TopKick 2007 Owner's Manual page 222

Driving Through Deep Standing Water
Notice: If you drive too quickly through
deep puddles or standing water, water can
come in through your engine's air intake and
badly damage your engine. Never drive through
water that is slightly lower than the underbody
of your vehicle. If you cannot avoid deep
puddles or standing water, drive through them
very slowly.
Driving Through Flowing Water
CAUTION:
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Flowing or rushing water creates strong
forces. If you try to drive through flowing
water, as you might at a low water
crossing, your vehicle can be carried away.
As little as six inches of flowing water can
carry away a smaller vehicle. If this
happens, you and other vehicle occupants
could drown. Do not ignore police warning
signs, and otherwise be very cautious
about trying to drive through flowing water.
222
Some Other Rainy Weather Tips
•
Turn on your low-beam headlamps and your
marker and clearance lamps, if your vehicle
has them — not just your parking lamps — to
help make you more visible to others.
•
Besides slowing down, allow some extra
following distance. And be especially careful
when you pass another vehicle. Allow yourself
more clear room ahead, and be prepared to
have your view restricted by road spray.
•
Have good tires with proper tread depth.
See Tires on page 320.