Well I just bought this used 2004 chevy diesel, and I blew my engine already i had only 3 months with 87000 miles. still has factory warrenty, But I put a edge kit on it and then found out it was for a LLY. I have a LB7 I was looking at the warrenty and found out they had changed the injectors I have also been hearing that they have a real problem. See I ran out of fuel and Primed it then the engine reved like crazy and boom it was done. So since i tapped into the exhuast manifold I now have to change it so I don't void my warrenty. Man sux but it helped me find this web site, and to top it off the tow truck driver was a real ass hole, a ford guy talking **** sayin I should of bought a power stroke. Well thats it in a nut shell.