I ordered a ecm through the ECM outlet pre programmed per vin#. I found that the truck started right off after putting it in without relearning the VATS or anything I thought that was weird. The only thing I had to do was programm injector flow rates and set ign cycles in the pcm security tab to 1 thats it and everything worked fine. I wonder why I did not have to relearn the VATS? When I tried to do it in the pcm secrity tab I got a error 012 or something not sure if thats that exact error code. Any body else have to go through a VATS relearn on a LMM?