Originally Posted by billandcarol
The Duramax / Allison combo has a well proven track record, having been around since 2001. There were some minor hiccups in the beginning, but since about 2003/2004, they've been pretty darn good.
When I was talking about fuel economy earlier... I meant on the gas engines.
The diesels are all much better on fuel than the gassers across all of the big 3... dodge, ford, gm. The cummins is about as bomb-proof as it gets.
I will say that the minor hiccups on the early allison/duramax chevy products weren't so minor on your pocketbook... I had an '02 1-ton dually 4 door with a duramax/allison. It was an awesome truck... the allison performed flawlessly... and the duramax had tons of usable power... but my goodness the money I put into that truck for injectors, and not just once but twice. That doesn't include the injectors that were changed 3 times under warranty prior to me buying the truck - of course I didn't find this out until after I bought the truck when I suddenly discovered all the issues GM had with injectors especially on the early LB7 engines.
It's fair to say that many people had no problems whatsoever.
A buddy of mine is a diesel mechanic... owns his own garage. He says Duramax diesels are in for head gaskets more than any other diesels. Anecdotal evidence I suppose. Great running engines, but I'm not sure I would own another one.