Canned tunes are not hex specific, and, since your truck is pre-04, I'm assuming your Dad's is too? If so, the programmer should work on either truck.
It seems to me that most of the problems I've read about concerning Edge and Gryphon programmers occur right after a firmware update. This leads me to think that there is something that is easy to do wrong in this process (but I can't think what it would be).
- Jack
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