The windshield wiper motor is protected by a circuit breaker and a fuse. If the motor overheats due to heavy snow, etc., the wiper will stop until the motor cools.
If the overload is caused by some electrical problem, have it fixed.
Headlamp Wiring
Power Windows and Other Power OptionsChevrolet Cobalt Service & Repair Manual. Windshield Wiper Blade R&R
1.
Move wiper arm to service up position,
Fig. 1.
2.
Press wiper blade retainer button in
to release wiper blade from inside radius of wiper arm, Fig.
1.
3.
Remove wiper blade out through opening
...