Well, my truck is completely stock. The previous owner replaced the ECM with a new rebuilt. He says it's in safe mode and needs to be flashed to the truck. Can I send it off to them for this? Probably a little cheaper?
You keep saying the truck "runs in safe mode..." What do you mean exactly? The only reason I can think of that it would run rough is if the PCM you have is programmed for a different engine or transmission. If it was pulled from a truck with identical equipment and gears then your truck should run fine.
EDIT - What codes is it throwing? Check engine light?
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