Hi all--our '97 Dodge 170P has a glitch. Crazy weather here in the Pocono Mts. of Penna. has us using both the heat and the AC at times. Unit has started sending all output through the defroster ve...
When the HVAC system has a leak in the vacuum system that moves the blend doors, it almost always defaults to the defroster vents for safety reasons. At least your defroster will work until you get the thing fixed.