I also own 2015 big horn 4x4 crew cab eco diesel. 27k miles with zero issues. As buck master already said, I can't say enough good things about this truck. Love it. Tons of power. I was driving an 08 chevy z71 and there is no comparison on any level. Wouldn't hesitate if you are in the market. I haven't done the updates to mine that buck master has done to his, mine is just bone stock but have done a lot of reading about it and am considering doing it. I hear good things about deleting the emissions stuff. 100% best truck truck I've ever owned.