Helping a friend of mine with his Colorado LS swap. He is using a Current Performance Wiring harness and I helped with the re-pinning that was necessary. The ECM is an E40 out of a 5.3 Trailblazer P/N 12596679 (same number as recommended on their website). Not all sensors are connected to the engine yet, but I wanted to get a head start on modifying the tune file, but when I went to read the current tune, I get a "No VIN detected" message and I'm only able to read the TCM. I tried to poll the car with the Scanner and was not able to. My friend tried his Snap-On scanner and could not connect either. Does anybody have any suggestions?