2020 Chevy Duramax 3.0 Diesel

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.

I wonder how many people will avoid this engine because of the low life expectancy and rubber belt at back of engine. To me a Diesel should last longer then that.

I guess we'll find out from the owners down the road on durability.

gopherslayer wrote:

ib516 wrote:

FishOnOne wrote:
Here's some more intel on the 3.0 Duramax.

36,000 psi HPFP
Rubber belt drives oil pump. Again at the rear of the engine.
DEF fill port next to diesel fill port.
Diesel fill port looks exactly like a Ram diesel fill port

Link

Only 150k mile life expectancy/design? Seems low. Anyone know what other 1500 series gas or diesels are designed/rated for as far as longevity?

Probably the same 150k. The GM 6.0 probably longer judging by how many 200k-400k trucks are on the road. GMs half ton gassers aren’t exactly the king of reliability and longevity anymore.

So assuming this new diesel lasts way more than 150k miles like their gas engines, why have a rubber belt to run the oil pump. I'm assuming this is a maintenance item that will need to be replaced. Replacement may require engine removal and transmission removal is an absolute.

I do like their DPF/SCR/DOC packaged into one unit close to the exhaust output which should promote better passive regen.

Water pump location appears similar to a cummins.

ib516 wrote:

FishOnOne wrote:
Here's some more intel on the 3.0 Duramax.

36,000 psi HPFP
Rubber belt drives oil pump. Again at the rear of the engine.
DEF fill port next to diesel fill port.
Diesel fill port looks exactly like a Ram diesel fill port

Link

Only 150k mile life expectancy/design? Seems low. Anyone know what other 1500 series gas or diesels are designed/rated for as far as longevity?

Probably the same 150k. The GM 6.0 probably longer judging by how many 200k-400k trucks are on the road. GMs half ton gassers aren’t exactly the king of reliability and longevity anymore.

JIMMY034 wrote:

Grit dog wrote:

Bionic Man wrote:
I hope they put it in a Burb/Yukon XL. With proper cooling capabilities.......

Bingo!
And if GM want's to really blow away the competition, bring on the HD Duraburb for real!
It's time. I'm still astounded that, in the market we're in right now and the fact that 90% of the HD SUVs are now old clapped out piles of ____ that GM or Ford, or even Ram hasn't put out a HD suv again.

Would make half of the bitsching about weight ratings and towing capacities on forums like this go poof and disappear!

Very good point, except that there simply is not a market for HD SUV's. Sure WE who pull big campers want them, but people who own an RV are actually something like less than 6% of the population. When you figure how many different brands there are, and how many different types of vehicles there are, it would only be something like 1% to 2% of the population even wanting one, then out of them...only half could afford it. It's simply market demand. That's my theory anyway.

My opinion is their is little chance of seeing a HD SUV being made again. If you got money you can always have a new Duraburb or Excursion built. If you don't have piles of cash you can rebuild a Burb or X if you need a HD SUV.

Bionic Man wrote:
I hope they put it in a Burb/Yukon XL. With proper cooling capabilities.......

Won't be that much of an improvement, if they don't bring back the 2500 version.
Still has the limitations of a 1/2 ton soft suspension SUV.

FishOnOne wrote:
Here's some more intel on the 3.0 Duramax.

36,000 psi HPFP
Rubber belt drives oil pump. Again at the rear of the engine.
DEF fill port next to diesel fill port.
Diesel fill port looks exactly like a Ram diesel fill port

Link

Only 150k mile life expectancy/design? Seems low. Anyone know what other 1500 series gas or diesels are designed/rated for as far as longevity?

JIMMY034 wrote:

Grit dog wrote:

Bionic Man wrote:
I hope they put it in a Burb/Yukon XL. With proper cooling capabilities.......

Bingo!
And if GM want's to really blow away the competition, bring on the HD Duraburb for real!
It's time. I'm still astounded that, in the market we're in right now and the fact that 90% of the HD SUVs are now old clapped out piles of ____ that GM or Ford, or even Ram hasn't put out a HD suv again.

Would make half of the bitsching about weight ratings and towing capacities on forums like this go poof and disappear!

Very good point, except that there simply is not a market for HD SUV's. Sure WE who pull big campers want them, but people who own an RV are actually something like less than 6% of the population. When you figure how many different brands there are, and how many different types of vehicles there are, it would only be something like 1% to 2% of the population even wanting one, then out of them...only half could afford it. It's simply market demand. That's my theory anyway.

There is likely something to that, Ford was the last to leave that HD SUV market with the diesel available Excursion. Perhaps the national economy at the time played a part in its demise, maybe that is different now. However add 9K for the diesel option on a HD Suburban and that is a price tag few families could afford, even in today's more favorable economic climate. As the new crop of gas engines from Ford and GM is about to release maybe that would be a more reasonable option in a 3/4 SUV. I don't know what it takes to put a HD drivetrain under a full size SUV, but I imagine it would be expensive enough to require a healthy take rate. Putting Ford or GMs new LD diesel in a 1500 based SUV seems much more likely. However tow ratings will be less than a pickup since the overall chassis will be heavier. However if you could get to a 10K tow rating (which is just above GM's 3.0L pickup rating) with enough capacity for a decent tongue weight you would likely cover the majority of bumper pull RVs and horse trailers in use. It would also get good enough MPG that it would be easy to justify filling the role of the average (but financially successful) soccer mom.

Here's some more intel on the 3.0 Duramax.

36,000 psi HPFP
Rubber belt drives oil pump. Again at the rear of the engine.
DEF fill port next to diesel fill port.
Diesel fill port looks exactly like a Ram diesel fill port

Link

Grit dog wrote:

Bionic Man wrote:
I hope they put it in a Burb/Yukon XL. With proper cooling capabilities.......

Bingo!
And if GM want's to really blow away the competition, bring on the HD Duraburb for real!
It's time. I'm still astounded that, in the market we're in right now and the fact that 90% of the HD SUVs are now old clapped out piles of ____ that GM or Ford, or even Ram hasn't put out a HD suv again.

Would make half of the bitsching about weight ratings and towing capacities on forums like this go poof and disappear!

Very good point, except that there simply is not a market for HD SUV's. Sure WE who pull big campers want them, but people who own an RV are actually something like less than 6% of the population. When you figure how many different brands there are, and how many different types of vehicles there are, it would only be something like 1% to 2% of the population even wanting one, then out of them...only half could afford it. It's simply market demand. That's my theory anyway.