Found out yesterday that the engine that I had was 1 of 50 that suffered a power surge on the assembly line, and that GM will have a new one to the service center in 48hrs to be installed. They told me its a new truck it gets a new engine. As a testament to the Duramax mine had from what the service manager tells me only one glow that was not effected, you could not tell by how well it started the only reason I took the truck in to begin with was the check engine light was on in my new truck and I do not like to see idiot lights.