Originally Posted by ttuton

I know Allision is an American Company, I was unaware that GM had anything to do with Allison other than using them as a supplier for transmissions.

Originally Posted by rlj676

They said Isuzu designed the engine.......?

What exactly did they say, who is this mystery supplier in Japan of the internals? Hell, give me the part numbers and I'll check for myself exactly where they come from tomorrow.

Originally Posted by Jupiter Sunsation

My 03 was covered under the "extended" powertrain warranty, GM extended the warranty on injectors to 200K miles or 7 years. Original injectors were changed at 145K miles, 163K now with no issues.

Originally Posted by SDFever

My guy is taking good care of me but I wanted to keep this thing for a long time.

At this rate, I'll need another injector job right at about 200K. My warranty expires next month.

I am however, shocked by how well they made the braking system on my truck. 152k miles on original brakes and they are about 20% worn.

I'm 3/4 of the way through my second set of tires.

Unbelievable!

But those Bosh Injectors are crap and nothing will shorten the life of an engine like dumping fuel in the oil all the time...

Ok, got my tissue. I'm done complaining.

Originally Posted by ttuton

"The forged-steel crankshafts begin life at a Sumitomo plant in Japan. They arrive at the DMAX plant in this raw state and are machined, balanced, and nitrided (case hardened) onsite."
"Isuzu casts the aluminum heads in Japan, and they arrive in Ohio in this unfinished form."
"The forged-steel connecting rods also come from Japan, and they're machined at the DMAX plant."
All info from the current issue of Diesel Power.

You chevy guys sure are sensitive.

Originally Posted by rlj676

Thanks for the details. Sounds like the origin is Japan w/ quite a bit of value add done in Ohio.

Originally Posted by SDFever

Mine says "made in Japan" all over it... And a LOT of the AC/Delco Parts that I have bought says "made in China, Mexico, etc"... We don't seem to make much of anything here anymore except degenerate kids and degenerate politicians.

But I don't care. I think the japs make good stuff. It's not a good thing for our country I suppose but they still make good stuff. Just consider a Kubota compared to????? Night and day.

However, the Duramax is an Isuzu Engine. GM owns Allison for a while now.

I used to have a 1978 bright yellow Chevy "Luv" mini truck with an Isuzu Engine in it. It gave me fewer problems than my 2004.

Truth is: I was a fool for buying a 1st generation product with a price point that high. I tried not to but there were NO used Chevy Diesels when I purchased. I took a chance and it has not been the best decision I ever made. It's still a good truck but it will take a LOT of selling for any of the big 3 to have me get off that kinda dough again.

If you have such close ties to GM, would you be willing to find out if the injectors have in fact, been upgraded or modified?

And is there a reason why they can't or won't provide "new" injectors instead of "re-mans"? Money is usually the driver of such decisions but damn....

The GM Book pays/bills out something like 18+ hours to change 8 fuel injectors @ 120 per hour NOT INCLUDING THE PRICE OF THE INJECTORS ($235 each after core return).

Flippin' crazy.

Originally Posted by rlj676

I don't have "ties to GM", I work there.

The guy I know who works D Max stuff isn't involved in the 6.6...... I'll ask him next time we hang out though about the injectors as he'll likely know.

Parts are sourced globally, but the majority are still US based. Luckily a lot of parts are too big/heavy to ship economically so it keeps some jobs here. I am hopeful (and have reason to believe) more parts will be coming back here in the future.