I have a 2005 Ram Quad cab 4x4, with a 5.7 HEMI. My problem started a week ago. I have no control over my HVAC. The blend valve is stuck on vent no matter where **** is pointing. The temperature **** has no input no matter where it is positioned. The AC and rear window defroster control do not work. The only thing that does work is the fan control. I have complete control on the fan. Any help would be appreciated.

 

Do a search for blend doors and find all the threads with the common issues as you have.

 

My question would be, if the blend doors are the culprit, would this cause the hvac button lights to stop working? I have the same issue as dakota on my 2005 Ram 1500. Fan works, nothing esle. No indicator lights. Does this (no indicator lights) happen because of malfunctioning blend doors? How does a mechanical issue present itself by lack of electronic signals to the HVAC control module?

 

I've just spent over 2hrs searching this forum for this exact issue, and can not find even a clue except "blender doors"....help please?

 

I would guess that the HVAC controller is the culprit here. Pretty sure that is built into the panel with the AC switches and ***** and is replaced as one unit. there was a recent thread where we threw that idea around but I don't think the OP ever got it resolved just yet...