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.
Chevrolet Cobalt Service & Repair Manual. Engine Valve Seat Grind
It is usually recommended to send
head to machine shop for valve seat grinding.
A suitable valve grinding tool
kit is required to grind valve seats.
Valve guides must be in good condition
before grinding because a pilot is used in guide to center stones. ...