My HVAC door actuator stopped working. For those of you who don't know it the selector for where you want your airflow from wether it would be the floor, face, or windshield so you guys know what I am talking about. I need to replace it and im wanting to know if its something I can do in a couple hours or is it a weekend project or something I should take to my mechanic? This car is really starting to aggravate me.