BREAKING: GM is officially recalling the L87

[DuraYuk]

They can’t recommend it for everybody because it would threaten their very complicated mpg fleet numbers. I’m guessing the 6.2s that under recall, recommend 0-40, anre excluded from messing with their fleet numbers. From all the forum dialog, utubes and gm recall recommendations it’s clear to me 0-40 is a better choice for my L87.

Stop man. Not everything is a conspiracy lol

 

[viven44]

If you haven't please read the FAQs about this oil viscosity straight from the horse's mouth

https://static.nhtsa.gov/odi/rcl/2025/RMISC-25V274-4725.pdf

"Why is the oil being changed in the vehicle?
The thicker viscosity oil offers an increased further level of protection."

GM has admitted that the thicker oil offers further protection (DFM, and everything included)

Let me state it again
"The thicker viscosity oil offers an increased further level of protection."

I would love for GM to deny anyone's warranty because they used 0W-40. Should be an interesting lawsuit.

 

[cornicekurt]

What would keep you from buying a GMT800 2500 series Suburban with a 6.0 or 8.1 engine?

I’d take that deal if GM was fair about the trade in. At this point I think they’ll have to be. I’ve got 40k on my High Country and this recall just seriously diminished the value of this vehicle. ESPECIALLY if the stick with this cheap fix of going off spec, increasing the weight of the oil. Who the hell is going to buy this thing?

 

[jfoj]

I take my chances with 0W40 all day over 0W20.

I have seen the loading on the 6.2l at highway cruise and it is not pretty.

0W40 oil pressure at idle 35 PSI, cruising 45 PSI not significantly different than 0W20, but the 0W40 has far better film strength, tolerance to fuel dilution and better HTHS protection. 5w30 does not offer a tremendous jump in the HTHS protection, it is closer to 0W20 than 0W40.

Not going to suffer an oil related failure from 0W40 as long it is changed frequently.

Interesting the GM TechLink info on capacities and oil requirement.

The Camero and Corvette 6.2l list 0W40, I guess if it good enough for these engines it should be good enough for the L87 in the trucks.

Also note how many models are speced for 5W30.

GM TechLink Oil Info

 

[OR VietVet]

I’d take that deal if GM was fair about the trade in. At this point I think they’ll have to be. I’ve got 40k on my High Country and this recall just seriously diminished the value of this vehicle. ESPECIALLY if the stick with this cheap fix of going off spec, increasing the weight of the oil. Who the hell is going to buy this thing?

Only someone that either has no idea about the recall or someone willing to take a chance on the new engine or oil weight change and gets a smoking hot deal.

 

[BacDoc]

What would keep you from buying a GMT800 2500 series Suburban with a 6.0 or 8.1 engine?

strictly for reliability nothing!
However, my 2024 high country is the first vehicle I had that has 360 HD cameras, adaptive cruise control, heated and ventilated seats, air suspension and magnetic ride, heads up display plus 420 hp and quad exhaust pipes. It rides like a luxury land yacht and puts a smile on my face when I hit the pedal!

I have experienced the benefits of all this stuff and don’t think I could ever go back! LOL!

 

[viven44]

What would keep you from buying a GMT800 2500 series Suburban with a 6.0 or 8.1 engine?

Sadly, not many left with reasonably low mileage (<=150K).... the high mileage ones are OK too with an engine/transmission rebuild as necessary, transfer case/axle service.

Our 02 Yukon with the 5.3 has the same fuel economy and tow rating (w/weight distributing hitch) as our 2024!! Needs only 6 quarts of oil, transmission has only 4 speeds, doesn't use a drop of oil between oil changes. We exclusively use it for short trips only. (to avoid using the 2024 for short trips!)... When I realized all this, I told myself that GM's engineering department needs to have an introspection as they have lost their way.

The GMT400/GMT800 trucks were a major advancement in engineering at the time over their carbureted predecessors and yet to be bested in the key engineering metrics.

The only thing the new trucks have more of is "computers modules", and they look cool (NGL). That is what sells family haulers/trucks these days unfortunately.

 

[cornicekurt]

strictly for reliability nothing!
However, my 2024 high country is the first vehicle I had that has 360 HD cameras, adaptive cruise control, heated and ventilated seats, air suspension and magnetic ride, heads up display plus 420 hp and quad exhaust pipes. It rides like a luxury land yacht and puts a smile on my face when I hit the pedal!

I have experienced the benefits of all this stuff and don’t think I could ever go back! LOL!

EXACTLY! Premium vehicle. I’ve had side mirror bugs FOREVER though. 8 trips to the dealer. 2 full drivers side mirror assembly’ replacements. 1 passenger side mirror assembly replacement. 1 control module replacement. Drivers side is either bird watching or counting lines in the road EVERY time I get in the thing. My service manager told me the engine failure problem will be less grief than these wonkey mirrors.

 

[Scarey]

Stop man. Not everything is a conspiracy lol

No conspiracy, it’s business.

 

[BADRIDES]

I called and the service advisor said that since my VIN is not yet showing for a recall that if I came down to pay $245 for an oil change they would in fact put 0W-40 in it. I asked about changing it on my own and he said to put 0W-40 in it. Any getting an oil change from a dealership own their own will get 0W-40 moving forward.

Damn it's $140 at my dealership and we arent putting 0-40 into anything until GM tells us too even if you want to pay for it on your own

 

[Scarey]

To my point, post #650 above , the info on oil viscosity is so blurred that there is no way gm would try a cheap shot to void a warranty for 0-40. Case closed, use either oil your comfortable with.

 

[23Seven]

There will be nothing left to eat if you use a 223.

You’re not wrong there! .223 might be basically the same size bullet as a .22 but the big casing sends that little bugger down range 3x as fast. With that said I guess the difference in Mobile 1 European vs. Mobile 1 Supercar would be the same comparison of .223 vs. 5.56.

Is this going to be a new debate? LOL

 

[23Seven]

You sure you 2024 was built in July 2023?? The typical model year change over starts in Sept. I think if you have a 2024 it was likely built in July 2024, which is on the edge.

First the discussion indicated any engine built on or after June 1, 2024 was fine, then they moved to July 1, 2024. If you have a July 2024 build, you MIGHT be outside of the July 1, 2024 engine build date. You would need to check the engine tag on the back of the driver side cylinder head for the Juilian Build Date.

My 2024 was built in 8/2024 and has an engine build date of July 15, 2024.

Checked the build date with the dealer by looking up VIN.

 

[23Seven]

I've read through this entire thread and I didn't see much talk about holding GM accountable. Every person who bought a vehicle in this pool can show damages, even with the remedy in place. Resale value being the most obvious. There are safety implications of the highest degree as well.

I'm sure many of us use these vehicles as the primary road trip vehicle for their family. We now risk being stranded or worse ever time we take these vehicles on the road with our kids in tow, which is a complete mind f*ck. The amount of liability on their hands is astronomical. They've already admitted the potential ramifications of these defects.

All for giving them the opportunity to remedy this on their own, but I'm not holding my breath. Even then we will still have damages on resale.

Anyone know how we get involved/included in the class action lawsuit? That's the only solution I see. Most state Lemon Laws aren't applicable here. At least my state's wouldn't be.

I've read through this entire thread and I didn't see much talk about holding GM accountable. Every person who bought a vehicle in this pool can show damages, even with the remedy in place. Resale value being the most obvious. There are safety implications of the highest degree as well.

I'm sure many of us use these vehicles as the primary road trip vehicle for their family. We now risk being stranded or worse ever time we take these vehicles on the road with our kids in tow, which is a complete mind f*ck. The amount of liability on their hands is astronomical. They've already admitted the potential ramifications of these defects.

All for giving them the opportunity to remedy this on their own, but I'm not holding my breath. Even then we will still have damages on resale.

Anyone know how we get involved/included in the class action lawsuit? That's the only solution I see. Most state Lemon Laws aren't applicable here. At least my state's wouldn't be.

I’m with you. How do we get on board!

 

[jfoj]

Checked the build date with the dealer by looking up VIN.

I would open up the drivers door and look down near the sill plate almost at the driver side rear door edge and you will find the build Month and Year X/YEAR listed directly on the tag.

Again a July start of build year would be rather unusual, I am not saying it does not happen, usually the only time the new model years do not start in Sept is when there is either a new model being released or a Mid Model Refresh.

Only way to confirmed the engine build date is looking at the tag on the rear of the drivers side cylinder head from under the car, it is not easy to see and if you have an AT4 or off road package usually skid plates are in the way.

 

[CCPLuvr]

If you haven't please read the FAQs about this oil viscosity straight from the horse's mouth

https://static.nhtsa.gov/odi/rcl/2025/RMISC-25V274-4725.pdf

"Why is the oil being changed in the vehicle?
The thicker viscosity oil offers an increased further level of protection."

GM has admitted that the thicker oil offers further protection (DFM, and everything included)

Let me state it again
"The thicker viscosity oil offers an increased further level of protection."

I would love for GM to deny anyone's warranty because they used 0W-40. Should be an interesting lawsuit.

Thanks. Been waiting for this to be published.

 

[Blackcar]

I would open up the drivers door and look down near the sill plate almost at the driver side rear door edge and you will find the build Month and Year X/YEAR listed directly on the tag.

Again a July start of build year would be rather unusual, I am not saying it does not happen, usually the only time the new model years do not start in Sept is when there is either a new model being released or a Mid Model Refresh.

Only way to confirmed the engine build date is looking at the tag on the rear of the drivers side cylinder head from under the car, it is not easy to see and if you have an AT4 or off road package usually skid plates are in the way.

Left rear side
The date code on the 2024 6.2L engine can typically be found on the left rear side of the engine block, where the transmission mounts. The date code format is usually represented as "D 15 4," where "D" indicates the month (April), "15" is the day, and "4" is the year (1984)3. This code helps identify the manufacturing date of the engine block.

 

[WalleyeMikeIII]

Left rear side
The date code on the 2024 6.2L engine can typically be found on the left rear side of the engine block, where the transmission mounts. The date code format is usually represented as "D 15 4," where "D" indicates the month (April), "15" is the day, and "4" is the year (1984)3. This code helps identify the manufacturing date of the engine block.

Actually I think that date documents the date of Assembly of the Engine, not the mfg date of the raw block.

 

[jfoj]

The engine build date code is on a paper sticker on the rear of the driver side cylinder head.

We are more worried about the engine build date, not the engine block casting/build date.

The engine build date is for the full assembly, not just the engine block. It is what helps with the bearing and crank problems the L87 is having.

The engine build date is a Julian date that preceded by a capital letter and usually the number 1.

Earlier in this thread I believe there are pictures of the paper sticker and where the Julian date is located.

 

[OR VietVet]

You can bet that GM has people monitoring all GM forums to see what is being said about this engine catastrophe and GM name.