Great description here Fat Mike.

Don't lose any sleep over it if your truck is running fine. Mine has had the same code for 2 years now and runs perfect.

I'm not about to fuss with it and change out computers because I don't want to wind up with the "death flash". Have read that the death flash can't be reversed. Right now my truck doesn't have it, gets great fuel mileage, and that's how it's going to stay.