Chevrolet Low Cab Forward 4500 2019 Series Owner's Manual page 65

64 Instruments and Controls
If the wiper frequently stops during
operation, contact your nearest
Dealer.
Before operating the wiper, ensure
that the wiper rubber is not stuck on
to the windshield. If the wiper rubber
is stuck to the windshield and you
still operate the wiper, the wiper
may break or the wiper motor
may fail.
Clear ice or packed snow from the
wiper blades before using the
wipers. Carefully loosen or thaw
wipers that are frozen to the
windshield.
Do not operate the wiper on a dry
windshield surface. Otherwise, the
windshield surface may sustain
damage.
Windshield Washer
{
Warning
At extremely low temperatures,
washer fluid may freeze on the
windshield after being sprayed,
(Continued)
Warning (Continued)
obstructing your forward view. In
such a case, warm up the
windshield before using the
windshield washer.
Windshield washer fluid is sprayed
over the windshield when this switch
is pressed. At the same time, the
windshield wiper operates.
To spray washer fluid on the
windshield, push the button on the
end of the combination switch lever.
The spray will continue as long as
you hold in the button.
If windshield washer fluid does not
come out in sufficient quantity,
immediately release the switch.
Otherwise, the windshield surface
may sustain damage.
If windshield washer fluid does not
come out, release the windshield
washer switch immediately.
Otherwise the motor may seize up.
Do not hold the switch pressed for
more than 30 seconds. Otherwise,
the washer pump may sustain
damage.
Check the washer fluid level
regularly. Do it often when the
weather is bad.
Use a good quality windshield
antifreeze to help prevent freezing
damage, and for better cleaning.