Predator sport tune

[Wnichols]

I have a 2012 Chevy Silverado HD 6.0 gas and I'm using the predator sport tuner u7194 and every time I hook it up it goes through its procedure and then says "failed cut" and tells me to unplug it? Any ideas on what I should do? The tuner is updated. Is it a problem with my truck? Thanks for any help

[mikel]

U7194 does not work for 11+ 2500 6.0 models, they use a different PCM than the 07.5-13 1500.