I ordered a cm2100 off ebay (2018 build date). This is suppose to be for a 2009 cummins 6.7. Seller is unsure if its new or used. Anyway I swapped my ECM with this one and I am unable to detect the ECM. Flashscan is unable to detect it. Swapped my ECM back with the original one and Flashscan can detect.

So question, is this new ECM no good? Is there a difference between bench flash and in-vehicle flash? This is going into a swapped truck and has a standalone harness (no tipm). I tried using my regular odb2 scanner and nothing. Even the scanguageII doesn't work.


andy