Any DPC-422 PCM can be reflashed with a PMT or NVK program on it. A chip based on those programs could also be installed in it. The PCM in the 02 and 03 trucks controlled the guages and what not and I don't belive will work in the older trucks.
My point is that if you can't find a PCM with the code you want, get the correct model and have it reflashed or put a chip in it.
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