2020 Chevy Duramax 3.0 Diesel
The Chevy 3.0 Duramax has been delayed due to the EPA which is a shame, but not surprising. Also not a fan of the timing chain installed on the rear of the engine. Link
Forum Discussion
ksss wrote:
Although I am a GM guy, I also admit from what I see (which is limited to what I have read here) that the 150k life expectancy and the rubber belt are concerning. I find the life expectancy really hard to believe. I have not looked into this on my own, and until I do I am taking this with a grain of salt. Maybe the belt has a 150K life expectancy which still is problematic, but I find it hard to believe that they would spend this much on bringing this diesel to market for it to be disposable at 150K.
150k miles is pretty much industry standard design life for vehicle under 8500 GVWR. And that's why some light duty motors aren't used in heavier applications (Chevy 6.2L for one example) or when they do, they reduce the power levels (Ford 3.5L EcoBoost). By design life, that means intended service life before expecting major service, under extreme operating conditions. It's not some countdown timer causing the engine to explode.
So the 150k stated life is not at all concerning to me. What does concern me, is that they have made major service items much more difficult to access, to the point that those major service items might be too much $$$ to bother with. The back-of-engine timing chain and oil pump belt strikes of Audi levels of stupidity.
