Truck won't start. Help

[Jondes91]

Tryed loading a new tune onto my truck. Now it won't start. Went back to the tow tune and it turns over but won't crank.

[Snipesy]

Who tuned it? You should probably ask them.

If he or she or you or whoever is new they probably got you egr valve stuck, or the iafv. You should get DTCs if they aren't disabled.