Originally Posted by sprintertech
possibly but doubtful.....even with all your wiring at the pcm its easy enough to damage trans related wiring as the pcm (ecm as you called it) is the engine controller and trans controller.....5v reference is shared with trans/engine sensors....such as app sensor,map sensor,and cmp sensor in this situation....they all begin at pcm C1 harness connector yl/pk wire pin 27....
if this truck didnt have a problem when it got there its related to something you guys did imho......
i have double checked all the wiring , plugs , pins, etc and all seems wel.
i have spoken to a guy who does a lot of work on Rams, his opinion is there is a fault within the tranny, a module.
Its in with a mercedes dealer at the moment ,so we will fgind out soon enough.
i,ll post up the outcome.