I have a 2003 chevy and the AC no longer works, it only works on vent occasionally and when it goes off and gets hot i roll the window down and it starts working again. The recycled air comes on whenever it wants to and i cannot turn it off. Also the keyless entry stopped working and when i unlock the door with a key the alarm goes off and does not stop until i start it. Dealerships have no idea what is wrong with it. Any input would be great Thanks.