If we ship you our old 99/00/01L computer and a new "unprogramed" OEM computer can you guys program the new one to match the old one??? It would be worth the bucks if we needed to return it to the dealer for a catastrophic failure of some sorts.. If you guys can't, who other than the dealer could help us?

 

That may work, but they will need both keys as well to reprogram the PATS. MAYBE they can install the computer in their truck, and use "your" keys to program in their vehicle, no need for the older PCM.
Hmm.......maybe a new option for the Tuners web pages