muchiboy

If you disconnected your battery sometime prior to this occurance,you may be able to reverse the sticking vent.The HVAC needs to recalibrate after such a disconnect,and goes through a full cycle on reconnection.Sometimes a vent door gets stuck.Try disconnecting the battery again,than reconnecting and running car for four minutes,without turning the AC or HAVC on.Turn the car off for a minute,then back on again,and you may have fixed the problem.If this fails,repeating the above may work.