Any thoughts on the newer built 6.2l engines? I am aware of the massive recall and horror stories on engines through mid 2025, but hard to find real information online on if the issues have been truly fixed.

From what I have read and seen on several videos, if you purchase and immediately install a cylinder deactivation defeat module and use a quality 0w-40 oil you will be fine. It seems most all the issues are due to the cylinder deactivation system that Chevy uses on those engines.

All that being said, unless the deal is screaming good, I would wait and see what the new engines that are coming out in the '27 models are all about. The new 6.6 and 5.7 engines are supposedly going to be normal type engines with no cylinder deactivation and more HP.

My 2022 has a 10 year/150k factory warranty on the engine, I think that's good ?

I wound definitely not buy the first year of GM engine release.

Bought a 25 with the 6.2 and extended warranty in August. My wife doesn't put too many miles on it so I'll let the dealership do the regular maintenance in case warranty becomes an issue. And I will not mess with the delete due to the warranty.
This is our first with the cylinder deactivation and I will trade it off for a new one as soon as they are made new without that system. Hate it when I forget to push the button each time it's started.
My 26 2500 has the 6.6 gas and no cylinder deactivation so I don't understand why they put it in the 6.2.

So, what's the consensus on the 3.0l diesel?

Silvy said:

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The big issue plaguing the 6.2 was failure of the main bearings which is completely separate from the AFM failures (bottom end vs valvetrain).

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I have an 07 Yukon xl Denali that I bought with 135k on the clock. Since I got it it's had the nastiest oil at change time of any car I've ever had, and no amount of seafoam, etc seemed to clean out the sludge so a couple years ago I sent blackstone a sample for giggles, probably 170k on the motor at the time. They said it had all kinds of bearing metal in it and to shorten my oil change interval and send them another sample. I'm at 204k now with lots of towing over the last 15k or so and still rocking. Should be taking delivery of an 18 Escalade tomorrow, first things I'm going to do are fill it up with premium, plug in a range afm disabler, change the oil with 5w30 and install a catch can. Hopefully these precautions keep my new motor happy for another 100k+

Texanick said:

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So, what's the consensus on the 3.0l diesel?

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I have it on a GMC AT4 and love it. My second one, first was an LM2. The had a hiccup with a few runs last year due to bad supplier. But largely a bullet proof well performing engine.

Silvy said:

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The big issue plaguing the 6.2 was failure of the main bearings which is completely separate from the AFM failures (bottom end vs valvetrain).

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I believe the L87's are now under recall for replacement due to crankshaft issues.

It Took GM More Than 28,000 Failed V8s And Three Internal Investigations Before Recalling Its L87 Engines, the standard engine in Escalades, High Country Silverados, full-size Denalis, the trucks that people spend the big bucks on. Seems these engines have defective crankshafts… pic.twitter.com/xnnmCFjekx

— Frank Brown (@FrankBr05713205) April 22, 2026

yes, I believe that the outsourcing is a big part of the problem

— Frank Brown (@FrankBr05713205) April 22, 2026

I profess to knowing very little about this but GM 6.2 owners probably should check it out, imho. A lot of these engines out there. Probably some heated/entertaining discussions on some related GM forums.
https://www.gm-trucks.com/nhtsa-investigates-gm-6-2l-v8-engine-recall-failure/

They are replacing some of the engines when inspected (with new or remanufactured ones). Thicker oil and even the replacement engines apparently are still failing. What a mess. Yeah, I am sure most all buyers are tracking this but I have paid scant attention to it (falls into the 'not my problem' bucket, personally).

I've been considering something in the suburban family with the 6.2 and wondering when these issues supposedly started. Aside from AFM, seemed like the real horror stories started with 2020 or newer builds?

Not expecting Toyota reliability but are 2019s decent?

ETA: What is the issue with post-August 2022 Fords?

P.H. Dexippus said:

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What is the issue with post-August 2024 Fords?

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Maybe nothing. August 2024 wasn't that long ago. Ford might be able to re jump Ram off they fixed their issues.

Teslag said:

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Texanick said:

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So, what's the consensus on the 3.0l diesel?

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I have it on a GMC AT4 and love it. My second one, first was an LM2. The had a hiccup with a few runs last year due to bad supplier. But largely a bullet proof well performing engine.

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drove the 6.2l in AT4x and the 3.0 diesel in AT4. The 6.2 sounded cool but the 3.0 was a better drive imo.

'03ag said:

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I've been considering something in the suburban family with the 6.2 and wondering when these issues supposedly started. Aside from AFM, seemed like the real horror stories started with 2020 or newer builds?

Not expecting Toyota reliability but are 2019s decent?

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I needed a suburban sized vehicle. I chose the 5.3 because it looked to have way less problems. I also knew I could put on an anti-DFM device or drive in L9.

The 5.3 has been a statistical zero on this specific failure mode that the 6.2 is consistently having. The 5.3 and 6.2 have much different supply chains and final assembly points. I have a 2024 5.3 Suburban with 22K on it and it has been great. I do oil analysis and it has had no issues.

fixer said:

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5.3

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Silvy said:

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fixer said:

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5.3

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Looks a lot like the 6.2 engine bearings.