05 Chevy 5500 Kodiac
For tuning, I would highly recommend you contact John Kennedy over at Kennedy Diesel: Kennedy DieselI had a lot of real bad experiences in Dallas with those who called themselves Diesel Mechanics. I have one Good Honest guy in Downtown Garland, but he only does factory stock work. I'm not a out of the factory box guy. I don't mind traveling to get my Duramax's upgraded and tuned up. Any real honest guys out there?