replaced turbo on my 2011 6.7 at 34,000, 37,000, 41,000, and now 52,000. the truck is bone stock. doesn't make much sense to me that they just keep replacing with the exact same kind of turbo....what happens when my warranty runs up? i also have the "death wobble" in the steering wheel and my dealership is dumbfounded....don't know how to fix. any input on what the heck is going on??