heater module

[weasel]

Hi, I was getting a burning smell under the hood, brought truck to dealer they said the heater module is gone. From everything I can find about this, it is a resistor and that is what is actually a module. I was told its one in the same. Right now I have heat and the fan works just only on the lowest setting. The control knob is a bit stiff to turn also, which seem strange if the resistor is gone I don't see how it could affect the control dial making it stiff. 2013 ram 1500 outdoorsmen
Any ideas

 

[Ramzaq]

Under the hood or inside the cab?

Since you mentioned the blower control knob I will go with inside. Yes there is a resister for the blower motor and yes they can overheat. It is a possibility that it did the same to your control knob (overheated) warped the plastic a little making travel a little stiffer. The knob controls the blower and current is passing between them, so excess draw could stress the parts.