AC problem - 2004 Sunfire

[naughtyrockets]

Hi! I have a 2004 Pontiac Sunfire. For the last few months, the AC has been acting up. It will blow out of the defrost vent and the floor and the far passenger side vent, but not the two in the middle or the one beside the drivers door.

Any idea what this could be? Doesn't seem to me to be major but I'm not sure.

 

[melsg5]

sounds like a problem with the selector door