Hi guys. Anybody have this problem? on my 2012 V6 Laredo, when the AC is on auto at 21 C (69.8 F) the front vents blow cool air but the rear vents blow out warm air. When I pump the temperature up to max (Lo) the rear vents start blowing out cool air again. Turn the dial down back to 21 C and the air becomes warm again. Does anybody have any ideas what could be the problem? Or is this normal? It seems to me to be a problem. I'd appreciate any input so I can be better armed (info wise) when I go see the dealer. Thanks.