TIS would not connect either. The controller is dead. So maybe this should be looked into. As stated the controller began to flash initially and error out. I can only assume the controller randomly died or it died because EFILive auto detected it as an A50 and I attempted to FF an A50 file. I sent all the trace files the day before I started this thread in a support ticket. If this isn't a coincidental controller failure then I feel something needs to be implemented to prevent this from happening in the software. Maybe the trace files will give some insight, maybe not. Not sure how those work. From now on I will be pulling all TCM on 09+ duramax trucks to check the model number. I would advise others do the same, we cannot currently rely on the auto detect feature. I'm all ears if any other tuners have any input.