Update:

Used ecm once at dealer would not flash. I brought it back and after multiple read and flash attempts I changed the vin, changed it back, then locked and unlocked via the v2 then it read so I full flashed the ecm to a dsp5 made for another truck built of that trucks stock tune. Relinked vats and now all is well. Dealer said that engineers reported error code received during dealer reflash attempt indicated part of calibration was missing