OT: GMC Duramax 3.0

[cowbell88]

I’m looking at a truck that has this engine in it. It is the IZO and not the LS2 and is a 24 model.

Anybody have one and can give me some info?

 

[Delmar]

I have a '24 GMC AT4. Only 7500 miles so far, but I love it. Great gas mileage. First time owning a diesel but so far so good.

 

[Xenomorph]

I’m currently in a ‘23 Chevy with the 3.0 Duramax. I love leaving the pump and the computer saying 630 miles to empty. I don’t pay for fuel and I do very little towing so I can’t speak to those issues.

All things considered, I love this truck.

Also.. I think the ‘25 horsepower and torque numbers are slightly better than mine.

 

[T-TownDawgg]

Do your research. Everybody gonna love that thing, til it breaks.
Last I checked, it has a 17ING OIL PUMP BELT. Typical GM. Ford does same kind of shitt.

I watched a YT video where a GM tech outlined the procedure and cost of replacing this belt, and it was a steep bill for something that has to be done every 100k miles, that is, if the emissions systems don’t fry the engine by then anyway.

 

[snowman79]

My neighbor has a 2021 Sierra with the 3.0 Duramax with 118k miles. He liked it until last week when he had to replace the transmission. $8k

 

[Anon1717806835]

I’m looking at a truck that has this engine in it. It is the IZO and not the LS2 and is a 24 model.

Anybody have one and can give me some info?

Just got the wife a 2024 Yukon with the 3.0 Duramax. Only had it since September, but no complaints so far. Good mileage and power.

 

[BIGDAWG44]

Supposedly the transmissions are going out at about 100k and there’s been a faulty compression code that gives a fake check engine miss fire code. That’s the only issues I’ve seen

 

[cowbell88]

Supposedly the transmissions are going out at about 100k and there’s been a faulty compression code that gives a fake check engine miss fire code. That’s the only issues I’ve seen

Thought that was with the LM2 model.

 

[Delmar]

Do your research. Everybody gonna love that thing, til it breaks.
Last I checked, it has a 17ING OIL PUMP BELT. Typical GM. Ford does same kind of shitt.

I watched a YT video where a GM tech outlined the procedure and cost of replacing this belt, and it was a steep bill for something that has to be done every 100k miles, that is, if the emissions systems don’t fry the engine by then anyway.

Originally the oil belt change interval was 150k miles, starting in ‘23 the interval is 200k miles.

 

[DesotoCountyDawg]

I know a guy who’s a crop consultant in NE Arkansas with one. It’s been in the shop 5 times already in less than a year.

 

[cowbell88]

I know a guy who’s a crop consultant in NE Arkansas with one. It’s been in the shop 5 times already in less than a year.

That’s not what I wanted to hear, and is also pretty helpful. Thanks.

 

[greenbean.sixpack]

Supposedly the transmissions are going out at about 100k and there’s been a faulty compression code that gives a fake check engine miss fire code. That’s the only issues I’ve seen

"only" issues?

 

[baddmann007]

Wife has a 2021 Escalade with 3.0 Duramax LM2. She loves it (especially the fuel mileage). Only issue we have had is an exhaust rattle at 20k.

 

[RotorHead]

Reading this is why I bit the bullet and have been getting my ‘03 z71 back up and running rather than buying new

 

[DesotoCountyDawg]

"only" issues?

Honestly I’m not sure there’s any vehicle that’s a sure thing now for reliability.

 

[patdog]

Honestly I’m not sure there’s any vehicle that’s a sure thing now for reliability.

No doubt. Vehicles were much more reliable 10 years ago. All the new electronics can be huge reliability issues. For every make & model. Cars & trucks are much worse lately.

 

[DesotoCountyDawg]

No doubt. Vehicles were much more reliable 10 years ago. All the new electronics can be huge reliability issues. For every make & model. Cars & trucks are much worse lately.

A lot of the issues of late with Toyota and Hyundai are poor quality components in the motors. My neighbors Toyota truck is in the list of VINs with a faulty component. They’re going to completely replace his motor.

 

[patdog]

A lot of the issues of late with Toyota and Hyundai are poor quality components in the motors. My neighbors Toyota truck is in the list of VINs with a faulty component. They’re going to completely replace his motor.

Yeah. Lot of stupid cost cutting going on. They changed the valve seals in my car for my model year. Of course they leaked leading to oil leakage. So they had to warranty a lot of valve seal replacements, including mine. My car is fine since they put the old valve seals in. But would have been a hell of a lot cheaper for them to just keep using the old seals.

 

[BIGDAWG44]

Thought that was with the LM2 model.

You’re correct on that

 

[stateguy]

2023 GMC AT4 with the baby duramax. 25k miles.
Biggest issue so far is the oil changes. It calls for DEXOS D. Only 8 oils certified to this standard a few months ago when I found a list.
Given oil requirement - it's pretty much oil changes at dealership only.
Some have trouble with burning oil. I've added oil twice.

 

[Delmar]

2023 GMC AT4 with the baby duramax. 25k miles.
Biggest issue so far is the oil changes. It calls for DEXOS D. Only 8 oils certified to this standard a few months ago when I found a list.
Given oil requirement - it's pretty much oil changes at dealership only.
Some have trouble with burning oil. I've added oil twice.

I do my own oil changes, but Mobile 1 has a dexos D oil and I can get it at my local Walmart. You can buy the AC Delco stuff from Amazon fairly reasonable.