I have posted before about some issues i have had with my Duramax. I am currently without a vehicle due to some major repairs that need to be done. (Fuel Injectors)
For all of you who have Duramax Diesels here is a web site I would recomend you look at, it is very simular to IDO.
Diesel Place
I was able to recieve alot of good information and advice from other owners and mechanics about my truck.