I've got a 05 GC Limited 5.7 with dual climate control and I'm having issues with my HVAC system. I have no control as to which vents blow and no control of the temp. I first thought it was a blend door issue, but when I disconnected the the control panel and reconnected it, I was able to control which vents were blowing. If I mess around with the selector knob and cycle it through, it goes right back to defrost/floor and I can't change it. I could also control the passenger side climate before I cycled through the vent selections. The fan blower is not affected. I can control that just fine. I'm thinking that I need to take it in and get the system re-calibrated, but not sure. Please help!!