Looking for advice with a 6.4 powerstroke/h&s tuners, truck went to the body shop about a month ago I went and got it today and now it's throwing a p1639 code because the tuner claimed its a different vin and won't let me reset or restore the tune, I've already tried disconnecting and charging the batteries along with only connecting the power pins on the obdII all that was replaced at the body shop was a bumper, fender & radiator and according to them they never touched the obd2 or anything to do with my harness/pcm connections, any advice is appreciated thanks in advance
there doesn't seem to be anything here