BREAKING: GM is officially recalling the L87

[viven44]

What if I’m wrong and it’s 20k to swap em all out which is what I’m thinking will ultimately happen

The ramifications are usually worse. Real world impact is probably that much. GM is going to replace 2~3 years worth of output on these engines, so they will need to double their manufacturing output on the 6.2s for the foreseeable future if they don't want to affect the new model production output (more capital expenditure, hire more operators, techs,...).. Its a big fat waste and hopefully teach them a lesson and slow down release of dumb new unproven technology. Dealers are going to be busy as heck as well, if you ask me the service department is going to be well funded.

 

[cornicekurt]

The ramifications are usually worse. Real world impact is probably that much. GM is going to replace 2~3 years worth of output on these engines, so they will need to double their manufacturing output on the 6.2s for the foreseeable future if they don't want to affect the new model production output (more capital expenditure, hire more operators, techs,...).. Its a big fat waste and hopefully teach them a lesson and slow down release of dumb new unproven technology. Dealers are going to be busy as heck as well, if you ask me the service department is going to be well funded.

I would imagine they’re going to get good at swapping them out before it’s all over. lol.

 

[vcode]

I do not know the exact way the GM OLM works but it looks at a number of parameters such as fuel usage, mileage, engine temp, time and maybe some other data inputs. So it probably flaga at the 1 year mark, I know it flaga on an engine overheating.

But th 50% OLM is for people that drive their vehicles, probably around 3000-4000 miles, not the 7500 miles that they often trigger on.

I didn't drive my Yukon for 2 weeks and the oil life fell 4%. So it will drop 2% a week if you don't put many miles on it.

 

[vcode]

The ramifications are usually worse. Real world impact is probably that much. GM is going to replace 2~3 years worth of output on these engines, so they will need to double their manufacturing output on the 6.2s for the foreseeable future if they don't want to affect the new model production output (more capital expenditure, hire more operators, techs,...).. Its a big fat waste and hopefully teach them a lesson and slow down release of dumb new unproven technology. Dealers are going to be busy as heck as well, if you ask me the service department is going to be well funded.

No way they are replacing all engines when there is only a 3-5% failure rate. Just can't see that happening. That's what the 10yr/150K warranty is for. Guess we will have wait and see though.

 

[viven44]

No way they are replacing all engines when there is only a 3-5% failure rate. Just can't see that happening. That's what the 10yr/150K warranty is for. Guess we will have wait and see though.

Yes, will need to see but 3-5% failure rate is astronomical by automotive standards and the same as 30000 - 50000 defective parts per million (DPPM). Sadly, all of these manufacturing issues are on a spectrum and thus a high failure rate issue also amounts to lower intrinsic life expectancy overall.... now going to 0W-40 on the survivors will slow down the failure rate for sure, yes the warranty is very helpful and will help GM here buy themselves more time.. I'm afraid they could end up replacing the bulk as the survivors may or may not make it there, but the warranty is definitely a smart move as I don't see how it could hurt them.

 

[23Seven]

I have a 2024 that was built in July 2023. I scanned it myself for P0016 and it was clear. I already changed to 0W-40. What I don’t see is any recalls for my VIN. This makes no sense because my build was definitely before the June 1st 2024 cutoff. I want to at least get a call so I can grab my new oil cap and extend from 5/60,000 to 10/150,000 on my PWT Warranty.

 

[Vladimir2306]

I have already written about the stories when people install a 2-3-4 engine, they come with broken temperature clearances from the box, their pistons jam in the cylinders from the box, I have already posted a video on this topic. So most likely, GM does not have any cold running-in. Therefore, our services, when receiving a new engine from the USA, open it and bore the cylinders to normal temperature clearances.
And they change the connecting rod bearings from the 4th generation.
Think about one more thing. Does GM have almost 1 million new engines? Most likely not, I am more than sure that they will simply remove broken engines from cars, repair them, and install reconditioned engines in others. In Russia, we already have automatic transmissions that seem new, but feel like they have been reconditioned.
Most likely the same thing will happen with engines, no one will send old engines for recycling, lol.

 

[Vladimir2306]

I do not know the exact way the GM OLM works but it looks at a number of parameters such as fuel usage, mileage, engine temp, time and maybe some other data inputs. So it probably flaga at the 1 year mark, I know it flaga on an engine overheating.

But th 50% OLM is for people that drive their vehicles, probably around 3000-4000 miles, not the 7500 miles that they often trigger on.

GM OLM works pretty simple and primitive. It's the number of cold starts, plus the engine run time, like 350 hours (I've never gotten that far because I change mine by mileage), 7500 miles, and 1 year. So every 35 hours of engine run removes 10%, every 750 miles removes 10%, and every day on the calendar removes 0.27%, every month about 8.33%.
In our region, where GPS is jammed, time starts jumping chaotically, and once in my car the time jumped forward by 1 month, I reset it correctly, then after 5 minutes it jumped forward by 1 month again, I reset it again, and for the third time the time jumped forward by 1 month, as a result the oil life in 15 minutes decreased by 25%)

 

[Marky Dissod]

... do not know the exact way the GM OLM works, but it looks at a number of parameters,
such as fuel usage, mileage, engine temp, time and maybe some other data inputs.
So it probably flags at the 1 year mark, I know it flags on an engine overheating.

Pretty much how it works, especially resetting annually, or immediately upon an overheat, regardless of RpMs accrued -
although IMEO overheat should be 239F, 265F is way too high, especially at altitude,
and I would not use motor oil over 6 months old ... but again, IMEO ...

Just as measuring a person's health by weight is quicker and simpler, but inferior to measuring one's body fat %age,
basing oil changes on mileage is quicker and simpler, but inferior to measuring more engine operations factors.
(OLM cannot analyze oil itself, only what the engine and driver do to the oil.)

After all, two similar engines in two similar vehicles could accrue the same number of miles/km very differently -
*A racer should change their oil at less 'mileage' than Aunt Teak or Aunt Cesder accruing 40 highway miles a day ...
*Two police vehicles both accrue miles at the same rate, one spends 3x as much time idling as the other,
the one that idles less can accrue more 'mileage' between oil changes vs the idler ...
*Two 'trucks' with the same engine and axle gearing both accrue 3000 miles in 60 days,
the lightly loaded one gets 18MpG, the one that's always towing 2500lb gets 15MpG.
Should they both have their oils changed at the same mileage interval?
*Two otherwise identical engines and vehicles both average 15MpG over 60 days,
one lives in the North Pole, the other in Arizona (two different definitions of 'Cold Start'),
should they both change their oil at the same 'mileage'?

There is an ideal operating temp window, an ideal engine load window, an ideal fuel consumption window, an ideal engine speed window,
and a few other considerations.
As rules of thumb, the more time the engine spends operating inside those ideal windows,
the 'further' it can go between oil changes.

OLM also tracks the intake air temp and the coolant temp the moment before each engine start,
all of which are recorded, so even without access to 'daily time' (think older ecms / pcms),
ecm notices differences between 'summer' and 'winter' by comparing those cold starts.

 

[WalleyeMikeIII]

I have a 2024 that was built in July 2023. I scanned it myself for P0016 and it was clear. I already changed to 0W-40. What I don’t see is any recalls for my VIN. This makes no sense because my build was definitely before the June 1st 2024 cutoff. I want to at least get a call so I can grab my new oil cap and extend from 5/60,000 to 10/150,000 on my PWT Warranty.

If you don’t go to the dealer for whatever the “remedy” is, you won’t get the special coverage for the survivor engine. Has to get registered in your vehicle history as having the “remedy” and “inspection” performed.

 

[BADRIDES]

I have customers adding Lucas oil treatment when they get an oil change

 

[WalleyeMikeIII]

GM OLM works pretty simple and primitive. It's the number of cold starts, plus the engine run time, like 350 hours (I've never gotten that far because I change mine by mileage), 7500 miles, and 1 year. So every 35 hours of engine run removes 10%, every 750 miles removes 10%, and every day on the calendar removes 0.27%, every month about 8.33%.
In our region, where GPS is jammed, time starts jumping chaotically, and once in my car the time jumped forward by 1 month, I reset it correctly, then after 5 minutes it jumped forward by 1 month again, I reset it again, and for the third time the time jumped forward by 1 month, as a result the oil life in 15 minutes decreased by 25%)

My understanding has always been that it counts engine revolutions, has a fixed number of them per fresh oil change, and each revolution can get "derated" by factors such as temperature and how far away it is from nominal. Overheats take it to zero right away. They added a time and mileage cap as the system matured. Here is a bulletin from GM explaining it in a bit more detail. This stuff all accounts for different usage, idle time, loading, etc. The research took place over seveal years, and if you dig, you will find the system to be quite accurate at predicting oil life as confirmed w/ used oil analyses. Of course, this all goes out the window if you have bearings shedding metal because they or their running surface was defective.

https://static.nhtsa.gov/odi/tsbs/2018/MC-10137589-9999.pdf

 

[Vladimir2306]

My understanding has always been that it counts engine revolutions, has a fixed number of them per fresh oil change, and each revolution can get "derated" by factors such as temperature and how far away it is from nominal. Overheats take it to zero right away. They added a time and mileage cap as the system matured. Here is a bulletin from GM explaining it in a bit more detail. This stuff all accounts for different usage, idle time, loading, etc. The research took place over seveal years, and if you dig, you will find the system to be quite accurate at predicting oil life as confirmed w/ used oil analyses. Of course, this all goes out the window if you have bearings shedding metal because they or their running surface was defective.

https://static.nhtsa.gov/odi/tsbs/2018/MC-10137589-9999.pdf

Yes, that's right))) I always change it based on mileage, every 7500 miles, I don't have a lot of downtime or long warm-ups)

 

[CCPLuvr]

Looks like GM is sticking to their guns on the 0W-20:

https://gmauthority.com/blog/2025/05/should-you-use-0w-40-oil-in-your-non-recalled-gm-6-2l-l87-engine/

 

[Vladimir2306]

Looks like GM is sticking to their guns on the 0W-20:

https://gmauthority.com/blog/2025/05/should-you-use-0w-40-oil-in-your-non-recalled-gm-6-2l-l87-engine/

This is exactly what I wrote about: switching from 0-20 oil to 0-40 oil on your own will result in loss of warranty.

 

[cornicekurt]

Looks like GM is sticking to their guns on the 0W-20:

https://gmauthority.com/blog/2025/05/should-you-use-0w-40-oil-in-your-non-recalled-gm-6-2l-l87-engine/

 

[KMeloney]

No way they are replacing all engines when there is only a 3-5% failure rate. Just can't see that happening. That's what the 10yr/150K warranty is for. Guess we will have wait and see though.

Until someone (GM, really) can say that there is a "max mileage" failure threshold after which a '21-'24 6.2 is no longer in danger of failing, then I think that establishing a "failure rate" based only on the engines that have ALREADY failed -- as though no more will fail -- is short-sighted at best.

If it could be said that all of these failures occurred under 5000 miles, say, and that if you're beyond that mileage you're in the clear, then a lot fewer of us in this thread would be concerned. But, as far as I'm concerned, that "failure rate" is nothing more than "the current failure rate," and has the potential to grow wildly.

 

[Antonm]

This is exactly what I wrote about: switching from 0-20 oil to 0-40 oil on your own will result in loss of warranty.

This is NOT true, stop spreading this lie.

Did you even read the article linked? it said "could" , words freaking matter when corporate lawyers are involved. Anything "could" void a warranty if GM could PROVE that whatever you did was the sole root cause of the issue you're clamming warranty for.

At least here is the U.S. we have a law that specifically prevents a manufacture from voiding warranties for such things (link below, again, to the federal trade commission's website).

Magnuson Moss Warranty-Federal Trade Commission Improvements Act

Title I of this Act authorizes the Federal Trade Commission to develop regulations for written warranties.

www.ftc.gov

...

 

[23Seven]

If you don’t go to the dealer for whatever the “remedy” is, you won’t get the special coverage for the survivor engine. Has to get registered in your vehicle history as having the “remedy” and “inspection” performed.

Will they do the inspection if my Tahoe’s VIN is not part of the recall? It was built in 2023 so it should be part of the recall but my VIN still shows no recall.

 

[Vladimir2306]

This is NOT true, stop spreading this lie.

Did you even read the article linked? it said "could" , words freaking matter when corporate lawyers are involved. Anything "could" void a warranty if GM could PROVE that whatever you did was the sole root cause of the issue you're clamming warranty for.

At least here is the U.S. we have a law that specifically prevents a manufacture from voiding warranties for such things (link below, again, to the federal trade commission's website).

Magnuson Moss Warranty-Federal Trade Commission Improvements Act

Title I of this Act authorizes the Federal Trade Commission to develop regulations for written warranties.

www.ftc.gov

...

Come on, if 0-20 oil is recommended in your engine, and you pour 0-40 there, this will not lead to a waiver of the warranty?