BREAKING: GM is officially recalling the L87

[jfoj]

Recall notice says there are around 14k already blown, right?
0.03*597*10^3 = 17.9*10^3

So maybe only 4000 left?

View attachment 456360

That's may be right, may be wrong. Usually with these types of things, there will be higher mileage failures just beyond the Powertrain Warranty that are not likely captured by the manufacturer.

If GM thought only 4k might be left to fail, I would bet they would have convinced the NHTSA that the "Oil Change" recall is all that is required.

But since the above document came out, GM added 1 month to the window of recalled vehicles, is this a large number, probably not, but to go from a "Oil Change" recall to an engine replacement for ALL vehicle with engines built before July 1, 2024 from the beginning 2021 build date/VIN's until probably the end of 2024 production is a BIG step!

Something else came to light.

So no, I do not think there the only 4k engines left to fail. 4k engines will probably fail before 1/2 the engines are replaced.

 

[viven44]

Manufacturers would recall much quicker these days because it preserves brand reputation.

You would think so, its a double edged sword and I must admit the very best of us could wait until the last moment to see if we can get lucky... recall too early and you can risk brand reputation over something really small, and recall too late and you can risk brand reputation as well.... here this time, I'd say it was a bit too late for GM's own good.

"On January 16, 2025, GM opened a product investigation following notification from NHTSA of its investigation into alleged engine failures in GM vehicles equipped with the L87 V8 engine. GM closed three prior investigations into this condition in February 2022, June 2023, and July 2024 based on the available safety field information."

"A series of crankshaft and connecting rod manufacturing improvements implemented on or before June 1, 2024, addressed contamination and quality issues."

GM knew something was wrong since about 2022, but they likely waited it out to see if the "early field failures" already happened and if the "intrinsic failure rate" would be low enough to just warranty as needed... but it does look like they found a 'fix' and still chose to be quiet.... but when the NHTSA investigation opened up the cat was out of the bag.

This isn't like most other recalls as it took them 4 different investigations to close on the root cause, and to be honest do we really think they have actually fixed the problem now?

The FAQs on this recall said the 0W-40 oil will offer an "increased further level of protection"... and given that no one has explained to me yet why the 6.2s on the truck can live with 0W-20 when the C7 corvettes need the 0W-40, I am still very perplexed. Are the bearing clearances different ? A truck weighs twice as much as a corvette so the engine is more likely to be lugged. The only differences I know of between the truck and the corvette 6.2s is in the top end (intake manifold, maybe cam, lifters, valve springs).

 

[Bkihum]

See Post #365

So the numbers after the year ,is it counting number of days from 1/1/24 to 6/1/24 or is this Julian numbers ? Ive never been fond of vin #... Sequence numbers of a build was in plant build.

 

[NorthGeorgia]

I hope my contribution/questions don't get lost in this. We are on page 39 of this post and I am afraid some of the knowledgeable folks have tired of this. But here is my question(s)
1. I have the Chevrolet app on my phone and it tells me my 24 Tahoe is fine. It states 'Everything looks good' 'Your vehicle has no health issues'. Does this mean my 6.2 engine is a 'good' one? I ask because someone much earlier in this posting said their Cadillac app indicated their engine was on the recall?
2. I guess I may be asking a 'Russian Roulette' question but...... I have just 13,700 miles on the vehicle. I live in North Georgia. I have taken numerous trips to Florida. I have taken a round trip to N.W. Illinois, Iowa, Minnesota, Chicago, and back. I have taken another trip to N.W. Illinois and to Chicago and back. Never any problems noted. Do I trust driving it to Illinois again? just a side note I get 22-24 mpg's...if the wind isn't buffeting me

Where do I find the build date on the engine?

I have contacted my dealer and like others on this posting "I" seem to know more about this debacle they do???

I appreciate the responses. I looked at the phone app and in the 'help' and sure enough the recall notice is there. In it it does say 'repair and/or fix'.

My build is May 2024 so the engine would be earlier. I definitely am included.

 

[jfoj]

So the numbers after the year ,is it counting number of days from 1/1/24 to 6/1/24 or is this Julian numbers ? Ive never been fond of vin #... Sequence numbers of a build was in plant build.

Usually a letter then the #1 followed by the Julian date which would be 24 and I think 183 is July 1st so anything below 24183 is in recalled.

 

[Bkihum]

See Post #365

Bkihum​

Member​

JoinedJan 31, 2023Posts70Reaction score32LocationChampion Ohio

See Post #365

So the numbers after the year ,is it counting number of days from 1/1/24 to 6/1/24 or is this Julian numbers ? Ive never been fond of vin #... Sequence numbers of a build was in plant build.

 

[Bkihum]

Usually a letter then the #1 followed by the Julian date which would be 24 and I think 183 is July 1st so anything below 24183 is in recalled.

Thank u so much

 

[WalleyeMikeIII]

I have not actually seen a full copy of N252494002 yet, only the screen shot from the Silverado Reddit. And the 02 version is not yet on NHTSA.gov yet.
So, as far as I know...the "plan" is not yet public yet...unless you believe the Reddit post. (I am not doubting it, just that I haven't see the official official trucks on the road recall yet).

 

[vcode]

You would think so, its a double edged sword and I must admit the very best of us could wait until the last moment to see if we can get lucky... recall too early and you can risk brand reputation over something really small, and recall too late and you can risk brand reputation as well.... here this time, I'd say it was a bit too late for GM's own good.

"On January 16, 2025, GM opened a product investigation following notification from NHTSA of its investigation into alleged engine failures in GM vehicles equipped with the L87 V8 engine. GM closed three prior investigations into this condition in February 2022, June 2023, and July 2024 based on the available safety field information."

"A series of crankshaft and connecting rod manufacturing improvements implemented on or before June 1, 2024, addressed contamination and quality issues."

GM knew something was wrong since about 2022, but they likely waited it out to see if the "early field failures" already happened and if the "intrinsic failure rate" would be low enough to just warranty as needed... but it does look like they found a 'fix' and still chose to be quiet.... but when the NHTSA investigation opened up the cat was out of the bag.

This isn't like most other recalls as it took them 4 different investigations to close on the root cause, and to be honest do we really think they have actually fixed the problem now?

The FAQs on this recall said the 0W-40 oil will offer an "increased further level of protection"... and given that no one has explained to me yet why the 6.2s on the truck can live with 0W-20 when the C7 corvettes need the 0W-40, I am still very perplexed. Are the bearing clearances different ? A truck weighs twice as much as a corvette so the engine is more likely to be lugged. The only differences I know of between the truck and the corvette 6.2s is in the top end (intake manifold, maybe cam, lifters, valve springs).

Millions of current gen 5.3's are out there without these issues running on 0W20. This is not an oil issue, but a manufacturing defect. 0W40 looks to be nothing more than a holy grail fix to marginal engines. Corvettes use 0W40 because of the high rpm's and possible track use.

 

[Bkihum]

See Post #365

Thank u