How do you repair the front window defroster,when no air coming out? on 2003 Chevrolet Cavalier

First it started with the actuator clicking when you first turn heater or air on.

1 answer
ACTUATOR IS BAD AND NEEDS TO BE REPL TO START WITH IF ITS THE CENTER ONE ITS LIKE A 5 HR JOB THE SIDE ONES ARE APPROX 1 HR EACH