There have been reported incompatibilities with disc brake controllers and the standard truck brake controller. GM was one brand affected, but Ford and Dodge have also been mentioned. I have a friend with a fairly new Ford who had discs installed in Goshen and they wound up installing a Prodigy to make them work. To me that was totally unacceptable. There is an "adapter kit" that seems to solve the incompatibility problem.
Do a Search on " disc brake controller" and you should uncover a number of Threads on this controller topic. Here is a list to get you started.
https://www.montanaowners.com/forums...archid=3761165
https://www.montanaowners.com/forums...ake+controller
https://www.montanaowners.com/forums...ake+controller
https://www.montanaowners.com/forums...ake+controller
https://www.montanaowners.com/forums...ake+controller
https://www.montanaowners.com/forums...ake+controller