BREAKING: GM is officially recalling the L87

[OR VietVet]

I literally just saw an ad on tv about GM saying that Chevy is America's most reliable truck. Maybe the GMT800 but.........

 

[Marky Dissod]

Only 3% of the 3.2m engines have a defective internal part, the rest will make it past 150,000 miles, at which point GM stops caring.
How many of THOSE make it to 200,000 miles? GM won't keep track of this, and neither will we, so it looks like GM will get away with it ...

literally just saw an ad on tv about GM saying that Chevy is America's most reliable truck.
*when NOT equipped with an L87.

 

[Scarey]

I got under my 2024 Yukon Denali XL with 2230 miles on it.
I looked up behind the exhaust pipe on the driver side and found my engine number tucked away. According to what I have been seeing, motors made with a date code of 24183 and after are OK.
My date code is 24137.
Which means the 137th day of 2024.
My build date is 5/24....
Accoding to this I should be getting a new engine.
I see nothing in my GMC app, nothing on NTSB site, nothing on GM Recall site when i plug in my VIN.
HMMMMMM......
I got the truck with 14 miles on it, and immediatly did an AFD/STOP START Delete inline, changed the oil to 0w40 early and put in a catch can.
Motor is running fine, but it only has 2300 miles on it.
I guess I will wait and see.

I’m a 135 and have no notice on the app and no notice when I do an active search.

 

[DenaliCountry]

Some business you just dont need

Don't be shy, let us all know what dealer you work at so we can be sure to never buy anything from you.

 

[nomech]

I'm telling you NO dealership is gonna jump and down to get in a hurry to do this recall because GM has cut the labor rates on this recall and they sure arent gonna get excited if you bought it 25 miles up the road but live in my hometown and its not convenient for you to take it back to your buying dealership. You arent gonna bring me the warranty work but wont give me customer pay work like an oil change.

I had no problem buying from my local dealership where I've purchased from before. Unfortunately my dealer didn't seem to want to work with me when I was looking for my 2025, I gave them several attempts.

I'm not trying to threadjack, I just wanted to reply to this comment because it isn't always black and white like some people make it out to be, generally speaking. Meaning, we don't go out of our way to buy out of state, usually there is a reason for doing that. I still take my vehicle to my local dealer for service, but if they don't want to sell me a vehicle, not much I can really do to buy from them.

 

[BacDoc]

I would always give my dealer A+ for service and their only problem Ive ever had with the last 5 Chevy trucks I bought from them was a couple of service visits that took longer than they told me, but these were isolated incidents. Most times it was routine service as I never had any problems with any of my trucks that I run until 80k - 90k miles. One of my vans had a water pump replaced under warranty.
Usually they wash the truck and sometimes semi detail it when I pick it up. Always with great attitude and always with a great explanation of what would be done before they started. They even have a camera system that the car goes through to inspect the exterior, wheels and under side of the vehicle using AI to inspect.

One of my visits with my 24’ Tahoe that took more time than they estimated was a recent recall on something to do with infotainment software - a 2 hour estimate took most of the day but no biggie.

The reason I posted this was because I had the email and app notification on loss of propulsion and called the dealer for updates. The woman who answered the call was very nice as usual but I could tell she was reading from a script, essentially saying I know nothing more than what is on the app.
Fair enough as this was weeks ago.

Last week I went in to the dealership in person and any questions about this recall were obviously causing frustration and a noticeable lack of morale. The vibe at this service department was always upbeat and very customer satisfaction oriented but this is definitely affecting morale.

For dealerships and customers the worst part is the not knowing. This is harder to deal with than knowing exactly what the problem is so we can get it fixed and get on with our lives.

 

[nomech]

Last week I went in to the dealership in person and any questions about this recall were obviously causing frustration and a noticeable lack of morale. The vibe at this service department was always upbeat and very customer satisfaction oriented but this is definitely affecting morale.

Can you expand on this? Were they brief with their answers? Did they roll their eyes?

I think it is very understandable that the vehicle owners have questions and while I understand that GM dealers are likely sick of repeating themselves, they are in a service industry. You can't have everyone bring their vehicles in for service at dealer prices but not want to help those same customers when a recall exists. That's GM's problem (to make right with the dealers) the customer shouldn't have to deal with 'low morale' of the dealer. Not only that, but the customer is also not in a good spot, either.

 

[WalleyeMikeIII]

After the recall has mostly worked it’s way through, what’s printed on the oil fill cap is what’s going to drive the value. If you have a 0-20 cap, you were outside of the recall or received a new motor. If you have a 0-40 cap you could still have a bad motor, you only past the knock sensor test….for now. 0-40 will be the scarlet letter.

Not difficult to order a new 0-20 Oil Cap...or for an unscrupulous used car dealer to swap it.

 

[PPV_2018]

literally just saw an ad on tv about GM saying that Chevy is America's most reliable truck.
*when NOT equipped with an L87.

made me laugh, but wanted to cry.

Imagine that disclaimer in tiny print on those ads

Probably should, GM’s legal team should have advised this already. Maybe they could hire me on as an advisor to help them navigate these tough times.

 

[apex944]

OK here is the first oil analysis I've done on this truck. I use this service on both my race cars and never thought I would need it on the tow vehicle
This sample was from after removing the dealer changed 0w-20 that was put in around 7000 miles during it's "first scheduled service". It came out around 9500 miles after learning about the recall.
I swapped it out for 0w-40 M1. Lake suggested running 2 more changes through it before sending in the next sample (0w-40) to analyze. So I will do this after two 3000 mile intervals. Truck now has about 10.5k on it, so that will be at around 16-18k miles.

Lake says they see that it typically takes 3 to 4 oil changes to finally remove all of the break-in debris and for the wear rate to drop into the normal level. More frequent oil changes early on gets this process completed sooner. So that is the plan to keep the oil pressure up and the blood pressure low.

PS - I have zero affiliation with Lake other than being a happy customer. I particularly appreciate the time he takes to provide answers to specific questions. ymmv.

See his notes at the bottom of the graphic.

 

[OR VietVet]

Yea, same company I use. I had a specific problem and he called me and I texted back with answers and now have his personal phone number. Cool guy and great videos at you tube.

 

[CCPLuvr]

This thread has become almost addictive to follow. I probably check it 3 times a day...

 

[CCPLuvr]

Our 2024 AT4 engine code was 10 days outside the affected population. I've switched to Mobil 1 5W-30 and will continue with that for the foreseeable future. I'm curious to see how GM will react to future warranty claims by people who have voluntarily switched to 0W-40 given they published this as part of the fix.

 

[KMeloney]

@Vinmega Only 3% of the 3.2m engines have a defective internal part, the rest are fine.

Remind me where you've seen this 3% figure stated as fact, please.

 

[jfoj]

From the NHTSA 25V274 document

"Population : Number of potentially involved : 597,630 Estimated percentage with defect : 3 %"

ESTIMATED percentage with defect.

I bet the number is much higher than that as GM has no freaking idea over a 4 year period exactly what went wrong and when it went wrong, otherwise there would not be 600,000 vehicles being recalled.

GM Estimates my vehicle is outside of the engine problem window, which GM has adjusted by 1 month at least once so far. Hopefully GM does not move the goal posts again.

 

[jfoj]

Our 2024 AT4 engine code was 10 days outside the affected population. I've switched to Mobil 1 5W-30 and will continue with that for the foreseeable future. I'm curious to see how GM will react to future warranty claims by people who have voluntarily switched to 0W-40 given they published this as part of the fix.

GM claims ONLY engines that are within the specific Recall window for engine DATE will be "Inspected" with for the P0016 codes and they will put a temporary knock sensor on the engine and use a Pico Scope (Digital Storage Oscilloscope Module) and run a test at a specific RPM and engine coolant temperature then the captured waveforms from the knock sensor will be analyzed by DSP/FFT and with then generate a "Pass or Fail" If the test "Fails", new engine. If the test is "Pass" oil change with 0W40 oil, new oil filter, new oil fill cap that has 0W40 printing and an addendum to the owners manual. These engines that "Pass" will get a 10 year/150,000 mile engine warranty extension from the date the vehicle was put into service.

Replacement engines WILL NOT get 0W40, they will continue to use 0W20.

So ONLY the "Pass" engines that are within the questionable engine build window will get 0W40 engine oil.

If you choose to run something other than 0W20 on engines not within the questionable engine build window, this is your choice and mine! 5W30 or 0W40 will not cause the engine to fail, other problems will. The dealership will not likely even know what oil you are running in the engine unless you tell them. But if the crankcase is clean and there is either a bearing, lifter or cam failure, it will not likely be causes by 5W30 or 0W40 oil because those exact oils are recommended in pretty much the same engine platforms in other vehicles.

The question is HOW MANY "Pass" engines with 0W40 will live to 150,000 miles and beyond? Only time will tell.

 

[vcode]

OK here is the first oil analysis I've done on this truck. I use this service on both my race cars and never thought I would need it on the tow vehicle
This sample was from after removing the dealer changed 0w-20 that was put in around 7000 miles during it's "first scheduled service". It came out around 9500 miles after learning about the recall.
I swapped it out for 0w-40 M1. Lake suggested running 2 more changes through it before sending in the next sample (0w-40) to analyze. So I will do this after two 3000 mile intervals. Truck now has about 10.5k on it, so that will be at around 16-18k miles.

Lake says they see that it typically takes 3 to 4 oil changes to finally remove all of the break-in debris and for the wear rate to drop into the normal level. More frequent oil changes early on gets this process completed sooner. So that is the plan to keep the oil pressure up and the blood pressure low.

PS - I have zero affiliation with Lake other than being a happy customer. I particularly appreciate the time he takes to provide answers to specific questions. ymmv.

See his notes at the bottom of the graphic.

View attachment 457606

Pretty much what I would expect at that mileage. Too bad you didn't go 5000 miles, would have been interesting to see.

 

[jfoj]

I am going to monitor the color of my engine oil, but I am thinking that 4,000 mile OCI will be what I plan on using. I want to see what the OLM indicator shows as % around the 4,000 mile mark. I was hoping to keep it simple and just use 50% OLM reference, but need to get some more miles to see what % OLM will be my threshold.

I am thinking that 55-60% OLM indication may be around the 4,000 mile mark based on what I am seeing at this moment.

 

[DuraYuk]

I am going to monitor the color of my engine oil, but I am thinking that 4,000 mile OCI will be what I plan on using. I want to see what the OLM indicator shows as % around the 4,000 mile mark. I was hoping to keep it simple and just use 50% OLM reference, but need to get some more miles to see what % OLM will be my threshold.

I am thinking that 55-60% OLM indication may be around the 4,000 mile mark based on what I am seeing at this moment.

The oil life monitor is dynamic not static. So everyone's % will be different.

Site Maintenance

 

[jfoj]

Understand but was looking for a reasonable and somewhat repeatable value that I could use other than straight mileage base. About 80% of my driving is highway at this point.

It is just kind of interesting that almost all the CPO units I looked at also has 7500 mile oil changes. And I was notified by My GMC App that I have a 7500 mile milestone service as well. Maybe these OLM will run past 8,000 in many cases???