Thread: Wiper arm not moving?

the nut that holds the arm on the gears (post) is most likely loose. not all that uncommon.
the only reason you'd have to tear the dash apart is if your switch was bad. everything thing else windshield wiper related gets taken care of from under the hood

Yeah, all the controls are under the cowl under the hood. Take the cowl off and see if the nut is loose or the arm is stripped. Pretty straight forward to tell what is going on when you get under there.