I have a 04 2500 with a duramax and I have been using efilive to tune it. About 2 months ago the alternator went out and totally killed the batteries, and since then when I try to tune it says that I need to license the ecm, I have used 16 licenses and this is the very first one that I used, Is there any way toget around this, I dont want to have to use more than one license for the same truck. Thanks James