I had the module rebuilt and added it no problem. I used the tech 2 to check modules for response, ECM, TCM, ESP/TCS and a couple of others, only ones with errors were the UEC and REC. The Tech2 says only the ECM and UEC are missing on bus. I think I did try a request info on the ECM, can't remember what happened, but I don't believe it displayed vin, I'll check again today. I have done so much checking of things on this car, that I having trouble keeping track of the results. I'm not sure what you mean about remove anything downstream and the pin numbers?