I'm excited to share that my new 6.2 (which is my third one) has finally arrived at the dealer! My truck has been in their care since January 2, 2025, but I've been fortunate to have a great relationship with the team there and they've provided me with a loaner for the past two months, which has been a lifesaver.

I know the delay was mainly due to GM figuring things out on their end. But when the engine is running well, I genuinely think it's the best I've ever experienced from Chevy. I love the power it delivers! I've never owned the old 454, but this feels fantastic.

If you find yourself in a similar situation, I'd definitely recommend telling GM that you want a new enginejust to be on the safe side!

Yup, the change in oil seems like a cheap, bare bones attempt to push the engine life past their warranty period

there should at least be a significant increase in the power train warranty.

Add in these vehicles are about to drop in resale value

So for those that own older 6.2s not covered by this recall, does it make sense to use 0W/40 as well?

BREAKING — GM is issuing a massive stop-sale over engine issues:

Affected models include (6.2L V8 Only)…

2021-2024 Cadillac Escalade
2021-2024 Cadillac Escalade ESV
2021-2024 Chevrolet Silverado 1500
2021-2024 Chevrolet Suburban
2021-2024 Chevrolet Tahoe
2021-2024 GMC Sierra…

— Car Dealership Guy (@GuyDealership) April 25, 2025

EDIT

Just posted what guy above did.

Bonfire97 said:

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Wow, I just read through that recall. If no DTC set, change the oil type from 0W-20 to 0W-40 and ship it? That is the poorest response to an issue I have ever seen. Anyone with any sense is going to run from this.

So, OK, I am going to spend 80K on a luxury SUV or pickup truck that has an engine with a design marginality that sensitive to a small of a change in oil viscosity? No thanks.

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Makes you wonder if other manufacturers' engines would also benefit from thicker oil.

Sea Speed said:

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more like second goodest poster, amirite?

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3rd because I posted on the 25th.

Just ribbin ya…

Just called my local chev dealer they knew nothing about it, par for the course

P.H. Dexippus said:

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Bonfire97 said:

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Wow, I just read through that recall. If no DTC set, change the oil type from 0W-20 to 0W-40 and ship it? That is the poorest response to an issue I have ever seen. Anyone with any sense is going to run from this.

So, OK, I am going to spend 80K on a luxury SUV or pickup truck that has an engine with a design marginality that sensitive to a small of a change in oil viscosity? No thanks.

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Makes wonder if other manufacturers' engines would also benefit from thicker oil.

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Should the 5.3L use thicker oil?

I have 400K on an older 5.3, and it was always run on 5W-30

I have a 2021 at4 with the 6.2l engine. I checked my vin on the nhtsa website and on the gmc app and it shows no pending recalls.

Looks like they just issued a recall

[url]GM Recalls 887K Trucks and Full-Size SUVs Due to Defective 6.2L V-8s[/url]

So glad I traded mine in at the end of February precisely because of this issue.

The 2025's aren't affected according to GM because a manufacturing change was implemented in June 2024 to correct the issue…


So apparently 2025's are still expected to use 0w20.

So the 0w40 in the recall is a confirmed band-aid.

Where did you see the info on the 25s and the June manufacturing change. I have been looking for a date like that.

The link Clobby put up says it only affects the 2021 through 2024 models. My brother just bought a 2025 model a couple of weeks ago and said that the recall does not affect his new truck

2025 aren't affected

https://gmauthority.com/blog/2025/04/heres-why-gm-6-2l-v8-recall-doesnt-apply-to-2025-model-year-vehicles/

Perfect, thank you for the link Fixer.

I was looking for this, direct from GM documenting the date and general idea of the changes.

"A series of crankshaft and connecting rod manufacturing improvements implemented on or before June 1st, 2024, addressed contamination and quality issues. Model-year 2025 vehicles were built after these improvements and are not included in the recall."

Yay for me (hopefully) just bought a 6.2 Tahoe two weeks ago. Knew about the issue but crossed my fingers it was fixed by now or with NTSA investigation I would have cover for issues.

Still really curious if I should switch to 0W-40 oil, I guess I will have to wait and see what all comes out in the next couple months.

If it were me I'd at least go with 5w30 and shorter oil change intervals. I think the 6.2 can benefit from this especially at low rpm and high loads.

I have a '24 suburban with 5.3 and im debating on moving to 5w30 on next oil change.

The specs for 5w30 and 0w20 ( ac delco formulation anyway) are very close even with high temp high shear tests…

The 5.3 doesn't seem to have an issue so the case for change is not really there.

Recall report from NHTSA.

Out of spec crank journals and debris in oil galleries. page 4/6

RCLRPT-25V274-1598.PDF

I called Freeman GMC in Grapevine and they said they don't have a remedy for it yet. The service manager said they have been getting calls all week but GMC hasn't sent them instructions on what to do with it yet. So either there is more than just the inspection/oil change or GMC hasn't notified their service departments on what to do.

The NTSA investigation report states the consumer recall date is June 9th

The GM 6.2, the Toyota 3.5 TT, the Hyundai 2.4, why in the world are main bearings, rod bearings, and thrust bearings all of a sudden causing huge failures? These are the most basic of bottom end components for which designs have long been optimized and understood.

Is it the move to 0W20 oil in the search for 0.001 mpg fuel savings that is driving all these failures?

I've moved my 2 vehicles that call for 0w20 to 5w20, but wondering if 5w30 is the safest. Balancing that both are hybrids that can run on electric enough that "cold" or Luke warm starts are much more common I've been a little reluctant to go to 5w30.

I.e. they know they have a problem and what it is but have not engineered and tested an effective fix on the affected engines because it is a repair and not a new build, and the scope of any damage might be extensive (I.e. engine replacement on all vehicles, bs just replacing some parts).

If metal bits have been circulating through the engine regularly, the wear on the entire engine will be accelerated.

Roger350 said:

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The GM 6.2, the Toyota 3.5 TT, the Hyundai 2.4, why in the world are main bearings, rod bearings, and thrust bearings all of a sudden causing huge failures? These are the most basic of bottom end components for which designs have long been optimized and understood.

Is it the move to 0W20 oil in the search for 0.001 mpg fuel savings that is driving all these failures?

I've moved my 2 vehicles that call for 0w20 to 5w20, but wondering if 5w30 is the safest. Balancing that both are hybrids that can run on electric enough that "cold" or Luke warm starts are much more common I've been a little reluctant to go to 5w30.

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I can't totally disagree…

However it is easy to dogpile on 0w20. But there are plenty of instances of the oil working well.

https://www.thedrive.com/news/louisiana-man-puts-1-million-miles-on-a-toyota-tundra-for-the-second-time

Victor Sheppard took 2 consecutive tundras to 1 million miles each.

He was on 10,000 mile oil changes with factory spec 0w20.

I think of bearing is designed for it you should be good.

The main bearing issues seem to be more related to lapses in manufacturing, possibly design in Toyota's case.

Got 2023 AT4 6.2L in January

FML

aggiepaintrain said:

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I guess the strategy for the current owners is to NOT use the thicker oil and get a new 2025 engine before the warranty expires

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And you could still luck into an AFM lifter failure on the new one.

https://gmauthority.com/blog/topic/lifter-failures-no-assurance-2025-6-2l-better/

If I was going to stick with GM, I think I would move to a diesel.

BiggiesLX said:

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0 weight oil is a U.S. construct and identical cars in other countries don't require it. Will companies redesign an engine to accommodate only US cars?I doubt it.

Change to 5w -30 and see how little your fuel economy changes. And 10k mile intervals are wrecking modern engines.

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Japan is using 0w8 in some cars. And here too.