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New bulletin/Campaign 6.2 L87

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WeGone Enthusiast

WeGone

Posted
Posted
16 minutes ago, newdude said:

 

 

They shouldn't be doing that until its listed as open.  If its incomplete, they can't do the recall and shouldn't be calling.  They can see right in GM's system if its open or not.  My guess is they are just using their dealer manifest list and not actually checking to see if the recall is open.  

 

 

 

PM sent.  Should be two letters.  One informing you of it being "incomplete" and may or may not describe the fix, and then a second letter that's along the lines of you can schedule the inspection to be done or if you fall under the other recall version where its just replace the engine.  

I'm not sure how they determine your place in line. I have only received the 1st letter at this point, and my (2021) vin is at the start of the recall. You would think I would have been contacted. Oh well I have a couple of 2Kmile+ trips coming up I I'll see what happens!

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Snow White
Snow White

the real issue here is Metaldyne Performance Group who supplies most of the powdered metal forged and machined rods ASSEMBLED by Tonawanda.  As recent as 2021, JD Norman Industries sued Metaldyne over

newdude
newdude

Update(s)   GM sent dealers a new special tool to use with an existing tool, the Picoscope (fancy high end oscilloscope plus a whole bunch of other fun stuff it can do).  Its a knock sensor

newdude
newdude

EDIT:  Linking an earlier version of the recall here that's from this very thread:   https://www.gm-trucks.com/forums/applications/core/interface/file/attachment.php?id=182274&key=25bd8ff5fd2a227a

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KARNUT Senior Enthusiast

KARNUT

Posted
Posted
1 hour ago, WeGone said:

I'm not sure how they determine your place in line. I have only received the 1st letter at this point, and my (2021) vin is at the start of the recall. You would think I would have been contacted. Oh well I have a couple of 2Kmile+ trips coming up I I'll see what happens!

I wouldn’t worry unless I was pulling a camper. If that’s the case maybe a backup plan is in order. 

revrnd Senior Enthusiast

revrnd

Posted
Posted
On 7/26/2025 at 10:10 PM, MrLeadFoot said:

So sorry to hear this, but it figures. It's so disappointing what's happened to GM. They're just lousy at making these trucks comfortable to drive. It almost seems like they think gadgets and amenities make up for lack of ergonomics, comfort and noise. I know it's a different chassis, but my 2000 Suburban was SO much more comfortable than my 22 Sierra Denali. And, that Suburban gave me no major problems, although it did drink oil. But, even so, I sold it with 235k miles on it, and the buyer was thrilled at the condition of it. All my friends had older trucks that, even though they weren't as luxurious as the new ones we all have now, felt more robust or something. I can't put a finger on it, but I find myself worrying more about something going wrong with my Sierra more than I ever did with my Suburban, my 93 Vette, and the 2001 vette i still have. I seriously wonder if Mary Barra changed the culture to one that thinks more bells and whistles means more comfort, when in reality wind noise, vibrations, and seemingly little things like visibility (aka blind spots); omission of windshield eyebrow tint (resulting in way more heat in the cabin on hot days even with the a/c on full blast); omission of rear door handle unlock buttons; cheap, noisy, pop-up fabric sunroof wind deflectors, and the like all detract from what once was the best in the business. Spending a little more time on ensuring wind noise is suppressed and addressing the vibrations alone would make for a much more comfortable ride and attract more of the luxury buyers, since these trucks are already in the luxury price range, but are nowhere near as comfortable as true luxury.

 

Ironically, my truck has been serviced at multiple dealerships, and when I voiced concern about something that isn't quite the way it's supposed to be, more than once the response has been "... it's not a Lexus." Makes me wonder if that's what they are taught to say! Darned right it's not a Lexus, because if it was, it would have been cheaper, price-wise, and designed and  assembled with better attention to detail.

 

We always boast about how things made in America are of better quality, yet you just bought a new 2025 truck from the company whose CEO said just the other day in an interview that these trucks are their strongest earners, but you have excessive wind noise? Unbelievable! 

 

(Getting off my soap box now) 

Where do I start? My maily has had pick ups since 75 (GM of course since my father and I worked in the Oshawa Truck Plant from 1965 to 2008). Somewhere along the line they went from work vehicles to glorified Impalas. The emphasis like you say has been on gizmos. I will say the Intellibeam system on my 2024 does work. That's more than what can be said about the 'auto dimming' rear view mirrors...

 

I wonder what percentage of trucks don't see a stick of lumber or bag of gardening material in the back?  

1454 Enthusiast

1454

Posted
Posted
2 hours ago, revrnd said:

Where do I start? My maily has had pick ups since 75 (GM of course since my father and I worked in the Oshawa Truck Plant from 1965 to 2008). Somewhere along the line they went from work vehicles to glorified Impalas. The emphasis like you say has been on gizmos. I will say the Intellibeam system on my 2024 does work. That's more than what can be said about the 'auto dimming' rear view mirrors...

 

I wonder what percentage of trucks don't see a stick of lumber or bag of gardening material in the back?  

Probably 50-75 percent. "Gizmos" and technology aren't the problem. I'm kinda tired of that complaint by people who don't build things.

 

Planned obsolescence and excessive EPA standards are. Couple that with a complete lack of management, and this is the result. Toyota is no saint, but at least they recalled all of their vehicles under the covered range for engine replacements. It's what gm *should do*, but they would rather pay lawyers to fight it instead of acknowledging a short coming and do what's right for the long term success of the company. I can say, their handling of my situation has permanently turned me off of the brand. 

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customboss Senior Enthusiast

customboss

Posted
Posted (edited)

it’s apropos  to L87 issues. 
key takeaway :  

FRICTION ≠ WEAR 

use great oil analysis from @Black02Silverado

 


Lake Speeds SPEEDDIAGNOSTIX is not giving enough FTIR data for the cost. 

Edited by customboss
  • Like 1
KevinTM Enthusiast

KevinTM

Posted
Posted

This may be a “no ****** captain obvious” post but for what it’s worth I figured id share my experience. Took my 2024 Trailboss 6.2 in to a GMC dealer this weekend to see about trading in for a 2025 AT4 3.0. Dealer gave me a great price on the AT4 but had very little interest in my truck as a trade in. Offered me 10K below KBB. 

 

Anyone else had a similar experience? 

Jus Cruisin Enthusiast

Jus Cruisin

Posted
Posted
On 8/4/2025 at 8:48 PM, KevinTM said:

This may be a “no ****** captain obvious” post but for what it’s worth I figured id share my experience. Took my 2024 Trailboss 6.2 in to a GMC dealer this weekend to see about trading in for a 2025 AT4 3.0. Dealer gave me a great price on the AT4 but had very little interest in my truck as a trade in. Offered me 10K below KBB. 

 

Anyone else had a similar experience? 

I received a competitive trade value for my 2023 when I got my 2025 a few months ago. 

WeGone Enthusiast

WeGone

Posted
Posted (edited)
On 8/4/2025 at 8:48 PM, KevinTM said:

This may be a “no ****** captain obvious” post but for what it’s worth I figured id share my experience. Took my 2024 Trailboss 6.2 in to a GMC dealer this weekend to see about trading in for a 2025 AT4 3.0. Dealer gave me a great price on the AT4 but had very little interest in my truck as a trade in. Offered me 10K below KBB. 

 

Anyone else had a similar experience? 

 Was offed $32k for my 21 Z71 LTZ 6.2 10 speed with all options still like new 16k miles.......

Edited by WeGone
  • 2 weeks later...
newdude Senior Enthusiast

newdude

Posted
Posted

Just updating from the field.  This is the one I wrote about on July 27th, our "first victim" of the recall.  Engine is coming out, all the parts are in and ready to go for assembly time. 

 

On another sad note, we just had another victim get towed in.  2023 Denali with 71k miles.  It runs, albeit poorly and does have the P0016 code set.  So that is getting an engine now as well.  

 

IMG_3156.thumb.JPG.38297ee4af40fa3922280347557decf8.JPG

 

 

 

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GETGONE Enthusiast

GETGONE

Posted
Posted

I thought I read that the engine swap was a cab off procedure.

MrLeadFoot Enthusiast

MrLeadFoot

Posted
Posted (edited)
On 8/14/2025 at 2:20 PM, newdude said:

Just updating from the field.  This is the one I wrote about on July 27th, our "first victim" of the recall.  Engine is coming out, all the parts are in and ready to go for assembly time. 

 

On another sad note, we just had another victim get towed in.  2023 Denali with 71k miles.  It runs, albeit poorly and does have the P0016 code set.  So that is getting an engine now as well.  

 

IMG_3156.thumb.JPG.38297ee4af40fa3922280347557decf8.JPG

 

 

 

Thanks for updating us.

 

Have you heard of ANY engine replacements at ANY dealership based on a failed test, that was not an engine that had already broken down or developed obvious problems?

Edited by MrLeadFoot
smit303 Enthusiast

smit303

Posted
Posted

I had the pico test done yesterday on my 22 refreshed 6.2 Denali. it passed and it got the oil change and cap. 30000 miles on truck. I've had no problems with the truck to date.

newdude Senior Enthusiast

newdude

Posted
Posted
19 hours ago, MrLeadFoot said:

Thanks for updating us.

 

Have you heard of ANY engine replacements at ANY dealership based on a failed test, that was not an engine that had already broken down or developed obvious problems?

 

 

We've yet to run into one that ran but failed the test.  Its so far been passed the test or towed in broken.  

dieselfan1 Senior Enthusiast

dieselfan1

Posted
Posted

My gut says if it runs it's going to pass.

They aren't going to put a new engine in if it still runs.

Go ahead and put the 0w40 in it now. I did a couple of months ago and im still waiting for the test.

MrLeadFoot Enthusiast

MrLeadFoot

Posted
Posted (edited)
1 hour ago, dieselfan1 said:

My gut says if it runs it's going to pass.

They aren't going to put a new engine in if it still runs.

Yeah, I'm kind of suspecting that the test might very well be just their way of placating the NHTSA. I hate to be morbid, but it's possible that someone will have to die from this problem before they get serious.

Edited by MrLeadFoot

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