The vent/AC/Heat won't blow any air in any position. If I put it on A/C I can hear the A/C unit kick on, but no air blows. Also, very little air comes through when the system is switched off and the vehicle is moving. I have checked all of the fuses I can think of but all are working fine. Has anybody else experienced this? And is there anything else I can check besides the fuses before I take it into the stealership? Thanks a lot for your help!`