Hello all, I have successfully flashed my PCM to remove VATS and still can't get this thing to start. The PCM is out of a 2001 Tahoe and I used an aftermarket harness. I have verified that all wiring is hooked up. I tried the PCM out of my other LS swapped car and no dice, so I am thinking it can't be Efilive. Checked my fuses all is well there. I am not sure what else to look at. When i go Display Data with the Flash Scan 3 it keeps resetting itself and if I move the throttle, I see 0.

Thoughts??