I just got a letter from GM about reflashing the Ecu because it may not adequately diagnose when frequent regen occurs? I also got a letter saying they had the prope block heater cord. Has anyone had this recall (ecm) done? Does it affect performance or def use? I am happy with the way my truck runs now and don’t want an excuse to get rid of it and get a 22’ with a new interior! (Sarcasm) Thanks By the way this is for my 17’ in signature.