Duramax Second Generation: 2004.5-2005 (LLY)
My 2005 LLY is bone stock mechanically. It's got 296,000 hard working miles on it and the engine has never been apart. Original injectors, turbo, everything. In the last year I've noticed that when I park it with the front of the truck pointing up hill, even very slightly uphill, for a few hours...