Basically, GM says they traced the problem down to two suppliers. They also investigated this issue three times until they could trace it. And the timeframe of the issues means now 2019-2021 and 2025 models were affected.
GM issues stop delivery on L87
- Thread starter chaseydog
- Start date
Fightnfire
Moderator
It's interesting, I follow a guy on YT Donslife. He has a 2021 GMC Sierra, same truck as mine, and has done a TON of mods to it. He also has a 2022 Escalade. The Escalade had the recall his truck didn't. I'm hearing rumors that this is mainly affecting US made trucks out of Fort Wayne. Mine was assembled in Mexico, his also I believe.
It's weird though, it seems they would want to make the oil change on all of the 6.2's. The Camaro and Vette recommended 0w40. If they don't recall all of them I can't see how they'll make the oil change requirement. They can issue a service bulletin to change the required oil but that won't get to everyone.
It's also possible not all of the recall notices have been sent out.
To clarify, are you saying it is mainly 2019-2021 and also 2025 or it's mainly 2022-2024?
Sorry, 2021-2024. I was a bit fast typing that.
chaseydog
Well-known member
I didn’t get the sense he was trading in the AT4X becuase of the 6.2 issue, rather that he decided he'd rather have the EV. But if you're right about his motivation then I agree its a bit of an over reaction
Was the engine also assembled in Mexico. My truck was assembled in Mexico but the engine and transmission are US built
Fightnfire
Moderator
Remind me how to look that up, it doesn't seem to be in the VIN info when doing a lookup? Window sticker?
chaseydog
Well-known member
IIRC its on the Drivers Door sill sticker. I'll check next time I'm at my truck
Or maybe on the decal under the hood?
It's a good question. I would imagine the engine serial number would do it.
chaseydog
Well-known member
Its not on this sticker. I thought it might come up when you scan the QR code but thats just the VIN, RPO's and the paint code. I'm almost positive I had this info when I bought the truck but can't remember where I found it.
Fightnfire
Moderator
The more I'm reading it seems like this might be a common misconception. Mexico does full engine and transmission assemblies along with final assembly of the vehicle. I keep reading that a lot of Mexican trucks have US built engines and transmissions but I can't find where anyone is finding that information.
chaseydog
Well-known member
You might be right. It's possible I'm misremembering something I read on the internet as actual documentation I had for my truck.
According to GM Power Solutions, the LZO, which is what I have is built in Flint. It's possible I took this to mean that engines, including the 6.2 might not be built in the same plant as the truck.
I'll take a look at my paperwork when I get home, but its certainly possible I'm incorrect.
Edit - The same site shows the L87 is built in Tonawanda, NY and St. Catharines, Ontario; Spring Hill, TN. Its possible this information is out of date or that it applies to crate motors and not necessarily the ones used in production
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Fightnfire
Moderator
Here's the best video yet on breaking down the recall with info currently available:
My truck has a build date of 2/21 ... so 1 month before the parts were bad. Sweet. Dodged that bullet back to only worrying about lifters.
The most interesting part of the video, the parts were machined in....St. Catherines, Ontario, Canada. So no issues at the other two locations Tonawanda, NY and Spring Hill, TN.
I wonder what the oil recommendation is going to be for 6.2's not included in the recall?
My truck has a build date of 2/21 ... so 1 month before the parts were bad. Sweet. Dodged that bullet back to only worrying about lifters.
The most interesting part of the video, the parts were machined in....St. Catherines, Ontario, Canada. So no issues at the other two locations Tonawanda, NY and Spring Hill, TN.
I wonder what the oil recommendation is going to be for 6.2's not included in the recall?
Saddle Tramp
Moderator
Nice! Thanks for sharing.
I'm curious about the oil recommendation.
I'm curious about the oil recommendation.
chaseydog
Well-known member
Interesting that Don mentioned GM might be moving to a 3000 miles oil change interval on the L87
Fightnfire
Moderator
That's a good video. I'm curious about the people like myself withe same engine not recalled ...should we swap to 0w40 too? I wonder what the MPGs would look like after the swap.
It has been a while since I watched some of his content and I forgot that he has at times in his past worked directly with manufacturers to get oil recommendations. It's nice to hear someone say out loud what everyone has been thinking, the thinner oil isn't because it's the best protection for the engine it's to help them meet MPG, EPA & Cafe standards. I think there's a video in that @testerdahl.
GM, and other manufacturers have done it too, swap to a thicker oil midlife for better protection value. His point about the exact same engines overseas where they're not worried about miles per gallon standards call for heavier oil.
It has been a while since I watched some of his content and I forgot that he has at times in his past worked directly with manufacturers to get oil recommendations. It's nice to hear someone say out loud what everyone has been thinking, the thinner oil isn't because it's the best protection for the engine it's to help them meet MPG, EPA & Cafe standards. I think there's a video in that @testerdahl.
GM, and other manufacturers have done it too, swap to a thicker oil midlife for better protection value. His point about the exact same engines overseas where they're not worried about miles per gallon standards call for heavier oil.
Exactly. But I also like how he strongly states that changing to thicker oil is no guarantee of extending engine life or even reducing wear. Like every good engineer, the question is always answered the same "It depends"......lol
He has a lot of opinions that’s for sure. I’ve asked him via email about some statements he has made and he backed off on them stating that was the way it used to be 10 years ago. He has a big following. I’m staying away. I worry it will only start a controversy if I don’t bow to his knowledge and I question his views. Kind of like challenging Scotty Kilmer.
Oh yeah, you know the videos that are coming. All the thin-oil haters are feeling vindicated now, so they'll use this situation to spread the gospel. You can see it in the comments of the Oil Geek's video. They are even slamming the "0W" part of it for some reason.
I'm betting you could interview a panel of experts from Amsoil and Mobil1 to Ford and Toyota presenting years of test data and someone will reply with, "But Scotty Kilmer said...."
I'm betting you could interview a panel of experts from Amsoil and Mobil1 to Ford and Toyota presenting years of test data and someone will reply with, "But Scotty Kilmer said...."
I’ve learned that talking about oil is liking talking about politics or religion. No matter what you say, someone will have an opinion on it. And that opinion will vary. I remember doing an interview with Valvoline and there were hundreds of comments sharing their oil recommendation interval. Everything from 1k, 3k, 5k, 6500, 8k and 10k. Everyone had a different rationale and reason behind their intervals.
I woke up at 12:30 am with all sorts of thoughts on doing a video about why the statements “trucks are designed to fail thanks to design flaws,” “10k mile change intervals destroy engines” and “built only to last to warranty” aren’t really that accurate when you step back and look at the big picture.
I’m torn on picking that fight.
I mean if every truck was designed to fail right when the warranty period ends, how do you explain those that don’t? What warranty are we talking about? Ford’s 5 year 60k or say Hyundai’s 10 year 100k warranty?
Trucks designed to fail due to design flaws? This doesn’t hold up either. The L86, the predecessor to the L87 came out in 2014 and they probably have the same engine design going back further. If the 6.2L V8 had a design flaw, then it surely has had this flaw for 11 years. Yet, we haven’t seen this issue before. So in the span of 11 years, they had several years with a bad part/s per their investigation. How do you explain that as a design flaw?
Lastly, 10k mile oil changes. They aren’t new. I can’t easily find a date when they began and I’d need to do some research. Google AI says late 1990s and early 2000s. Let’s say 2000. That’s going on 25 years of 10k mile oil change intervals. The industry sells around 10-16 million vehicles a year. Let’s call it 10 million. That’s 250 million vehicles on the road or that were on the road with 10k mile oil change intervals. Cut that in half, say I’m wrong. 150 million then. What percentage of those owners is very meticulous with their oil change intervals? I’d say not many. Even if you have 1 million, that’s 149 million commercial and consumer vehicles that have 10k miles intervals. Why then aren’t we seeing more failures?
I remember back when I was growing up somebody in marketing came up with the 3-year, 3k mile recommendation. Before then, you just changed it when you thought the oil looked dirty. Quick lube shops spread like wildfire to meet the new demand for proper oil change maintenance. Then people started saying we don’t want the extra burden and tax. Then new oil was developed and the intervals got longer. Now people can’t believe the 10k mile recommendation. I’d wager these same people didn’t agree with the 3k mile recommendation either.
Now I’ve sent my oil into the lab for analysis for any many trucks and with different intervals. They have never said anything about the age of the oil.
I’m torn on picking that fight.
I mean if every truck was designed to fail right when the warranty period ends, how do you explain those that don’t? What warranty are we talking about? Ford’s 5 year 60k or say Hyundai’s 10 year 100k warranty?
Trucks designed to fail due to design flaws? This doesn’t hold up either. The L86, the predecessor to the L87 came out in 2014 and they probably have the same engine design going back further. If the 6.2L V8 had a design flaw, then it surely has had this flaw for 11 years. Yet, we haven’t seen this issue before. So in the span of 11 years, they had several years with a bad part/s per their investigation. How do you explain that as a design flaw?
Lastly, 10k mile oil changes. They aren’t new. I can’t easily find a date when they began and I’d need to do some research. Google AI says late 1990s and early 2000s. Let’s say 2000. That’s going on 25 years of 10k mile oil change intervals. The industry sells around 10-16 million vehicles a year. Let’s call it 10 million. That’s 250 million vehicles on the road or that were on the road with 10k mile oil change intervals. Cut that in half, say I’m wrong. 150 million then. What percentage of those owners is very meticulous with their oil change intervals? I’d say not many. Even if you have 1 million, that’s 149 million commercial and consumer vehicles that have 10k miles intervals. Why then aren’t we seeing more failures?
I remember back when I was growing up somebody in marketing came up with the 3-year, 3k mile recommendation. Before then, you just changed it when you thought the oil looked dirty. Quick lube shops spread like wildfire to meet the new demand for proper oil change maintenance. Then people started saying we don’t want the extra burden and tax. Then new oil was developed and the intervals got longer. Now people can’t believe the 10k mile recommendation. I’d wager these same people didn’t agree with the 3k mile recommendation either.
Now I’ve sent my oil into the lab for analysis for any many trucks and with different intervals. They have never said anything about the age of the oil.