I have a 2005 Monaco holiday rambler with a cummins isb 300 and a allison 2500 mh. The check engine light comes on as well as the trans light while driving. I took it too cummins and the fault code is 241 'lead to change oem harness" I took it to Allison tech and he found 2 codes U0073 "CAN bus reset counter overrun U0100 "Lost CAN communicatin with ecm" The allison guy said he had a problem like this in the past and rewired a plug to the ecm with a new pigtail that he spliced in. Any thoughts ??????????? Fixit I hate those intermittent electrical problems!!!!!!!!!!