Press the button at the end of the windshield wiper lever until the washers begin.
WARNING:
In freezing weather, do not use your washer until
the windshield is warmed. Otherwise the washer
fluid can form ice on the windshield, blocking your
vision.
When the button is released, the washers stop, but the wipers continue to wipe about three times or resume the previous speed.
Chevrolet Cobalt Owners Manual. Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
The rear window defogger only works when the ignition
is in ON/RUN.
(Rear): Press to turn the
rear window defogger on
or off. Be sure to clear as much snow from the rear
window as possible. An indicator light c ...