Another 6.2L engine failure!

[customboss]

7 minutes ago, ScathaTheWorm said:

They are used because they are GENERALLY STOLEN...and once they break they are thrown away. 

The truth that Toyotas are "unbreakable" NEEDS TO STOP. They simply are not. 

I guess you did not consider these...

 

Who said that Toyotas never fail?  That Chevy looks like ******.  

[ScathaTheWorm]

42 minutes ago, KARNUT said:

I wonder if you read my whole post. I drive a very nice old reliable 02 Avalanche. A pre cylinder deactivation, 4 speed automatic. The paint right now looks new. The light under the hood still comes on. It only has 184K miles on it. My trip vehicle has 150K miles on it an Odyssey. My wife’s going to town vehicle a 2011 Genesis has close to 150K on it. So I’m pretty satisfied. Originally I just passed on info for a well known and respected radio show. 

Then that is fine then I guess. You can keep your avalanche..to 2 million miles or more. 

 

 

[ScathaTheWorm]

52 minutes ago, customboss said:

Who said that Toyotas never fail?  That Chevy looks like ******.  

And? Most of the Toyotas there also look similar... Point is, these people DO USE other trucks also.  I have seen a photo of an LC70 and an F 250 with rocket launchers somewhere in the Middle East, with the LC70 struggling to hold the weight of the launcher unlike the F 250.. Many also have collapsing bed sides. And yes, they can get blown up like any other truck

 

I do like the 79 Series Land Cruiser...and if ever I stay in Qatar, I probably may purchase one (with an automatic and a 4.0L V6 in addition to a 6.2 GMC/Chevrolet Truck and maybe another SUV)...but these LC pickups are EXTREMELY overrated for what they are....and do HAVE their limitations. In Toyota Qatar's website..they are classed as a LIGHT COMMERCIAL VEHICLE...but I have seen them carry NOTHING here funnily enough other than livestock or similar ...unlike GMC/Chevrolet pickups. For example, they cannot tow as much as a 2500HD Silverado.

 

I drove a Land Cruiser GXR V8 2019 as a rental, and that actually shook at speeds closer to 120 km/h...and it was 100% bone stock. Mine had the 4.6L V8, the sound of which I did like...but plenty of other things I did not. 

 

Bottom line- Toyotas are FINE for what they are designed to do...but of course they can be destroyed as well. 

Edited September 12, 2024 by ScathaTheWorm

[Jordan Bolster]

On 5/7/2024 at 10:40 PM, johnnyquick said:

I know 2023 6.2's are being replaced for free and before selling any remaining on lots because of lifter overbore I believe it was.

Lucky you they lied about my 6.2 and it burning oil general motors not standing over it a 2021 gmc Denali 

[JK79]

Hi,

 

My engine has failed as well, due to valve springs loosing tension. Has anyone seen this or have the service bulletin?

 

Thanks 

[Chair78]

I have a 2022 Chevy Silverado 1500 LTD with the 6.2 and 57k miles on it. I too lost power while driving and happened to be towing a camper. It would not start, the 400 amp fuse on the wiring harness blew and there were multiple codes. There was a TSB issued about this problem, so I printed it ahead of time, and highlighted all of the codes that matched the codes on mine to bring to the dealership. After the dealership ran diagnostics, I was informed it needed an engine replacement. They did not provide an explanation as to why this happened. I was told GM will cover all costs for the replacement thankfully. 

Edited February 6, 2025 by Chair78

[SamC3]

On 4/29/2024 at 12:25 PM, Stevens54 said:

Like others on here I was driving along the interstate in the fast lane in fairly heavy traffic. All of a sudden i had no power. Just I had turned the engine off. My dash flashed something about shifting to neutral and restarting the engine. Luckily I was able to make it over ti the right emergency lane before getting hit in the rear. I had it towed to the dealer and they told me the engine was locked up. It is a 2019 and only has 52K miles on it. Of course the warranty expired 6 months ago. The dealer told me it is going to cost $13,000 to get it replaced.  I keep reading story after story about these engine failures. There really needs to be a recall on these engines before someone gets hurt or killed. I have filed a complaint with the NHSTA and I am also going ro file a complaint with consumer reports. I'm hoping that if enough of us complain GM will have to issue a recall on these engines. So if you have had or have this happen please file a complaint.

 

Same exact thing happened to my 2019 6.2L high country 69k miles, but mine had 6 months left on the warranty bc I had bought it Certifeid pre owned. Took them about a month to replace the engine, picked it up 2 days ago and the “new” engine locked up in Less than 24 hours!!!  I’m waiting to hear what the dealerships diagnosis is…..

[el ess1]

When I bought my 2020 Denali 6.2 new (built in late November 2019), I was pretty happy to get all the discounts piled on and employee discount at the time, and all that since the Covid bug was killing sales. Saved a ton of $$ on it. When signing the paperwork, I bought a no time limit, 150,000 mile drivetrain and major systems warranty through the dealership with a $100 deductible per incident because of the then-new to me cylinder deactivation. Wasn't going to at first, but those deactivation destruction stories from years past kinda scared me a little, enough to say yes. The only thing in it that if I have warranty work done, it needs to be done by the dealership or an ASE certified mechanic or shop. Warranty work done at Joe's Machine Shop with Johnny Shadetree as a mechanic won't fly. By the way, buying a new vehicle during the Covid outbreak was a weird experience.

 

The same dealer services the truck when needed so it's well maintained, even though it only has 8,800 miles on it after 5 years of ownership this month. Since the 2020 L87 has no way of cleaning the backside of the valves of oil buildup, I put a catch can on the PCV system to help cut down oil ingestion) Shortly after purchase, I thought the almost $2K I spent for that warranty was a bad idea because I normally have had good luck with GM trucks, but figured that was a sunk cost and bit the bullet. Now I feel a bit more relieved by having it with this 6.2L thing going on. At least there's a 50/50 chance a new engine may only cost me $100 if the worst happens. What I'm not understanding is if they've had the same issue with the 2019-24 6.2, why did they cut off the range of "recall" coverage? Or was that the NHSTA's assessment to include 19 and 20 models as problem children and GM decided the range? 

 

Crossing fingers, I'm very happy so far that the only issues I've ever had with the truck was the infamous rear window water leak, and a BCM went bad (truck sat at dealership for 3 weeks due to national backorder on those), both issues fixed under factory warranty, and I replaced the original battery in mid-April '25 as it was starting to get sluggish when starting. And most recently a bad fuel pump driver module I replaced myself a week ago. I'm hesitant to put in 0W-40 oil in my truck because if I ever did have a problem, pretty sure my truck's aftermarket warranty won't cover it for not using the "correct" oil, but yet, it kinda worries me a bit of having to leave 0W-20 in it. Guess I'll just roll with it.

[CTHM732]

My 2016 Silverado L86 failed at 102,000 miles 2 weeks ago. It doesn’t matter what year it is, how often you change the oil and take care it, it’s going to fail. These engines are a ticking time bomb and GM has known it for over a decade. 

[asilverblazer]

20 hours ago, CTHM732 said:

My 2016 Silverado L86 failed at 102,000 miles 2 weeks ago. It doesn’t matter what year it is, how often you change the oil and take care it, it’s going to fail. These engines are a ticking time bomb and GM has known it for over a decade. 

Your 2016 had the same crank bearing failure as a 2019-2024?

[CTHM732]

4 hours ago, asilverblazer said:

Your 2016 had the same crank bearing failure as a 2019-2024?

I haven’t gotten the engine broken down yet to determine exactly but I do know the cam is done and there was misfire in 2 cylinders. While driving; check engine light blinking, stabilitrak flashing on and off and the oil PSI jumped to around 55-60 PSI. This of course after I had to deal with the 8L90 shudder that the dealer couldn’t figure out so I fixed that.
 

If I keep the truck a built L8T is replacing the L86. The DoD/AFM kills these engines. 

[Grumpy Bear]

3 hours ago, CTHM732 said:

I haven’t gotten the engine broken down yet to determine exactly but I do know the cam is done and there was misfire in 2 cylinders. While driving; check engine light blinking, stabilitrak flashing on and off and the oil PSI jumped to around 55-60 PSI. This of course after I had to deal with the 8L90 shudder that the dealer couldn’t figure out so I fixed that.
 

If I keep the truck a built L8T is replacing the L86. The DoD/AFM kills these engines. 

 

Curious, what would you consider a 'normal' AFM system lifespan? How long do you think one without is capable of? 

[KARNUT]

8 hours ago, Grumpy Bear said:

 

Curious, what would you consider a 'normal' AFM system lifespan? How long do you think one without is capable of? 

Looking up on the web you can get the information that would seem obvious. You asked engine components to do more. You get more wear. The answer is they can last just as long but required more maintenance. Apparently having to change lifters, cam and associated components are maintenance or repairs. In some research the normal life span of valve train components are 80-100k miles with 3-5K miles oil change. So the next logical conclusion would be cost per mile. I use that analogy with my wife all the time with vehicles. My Odyssey is approaching 170K. The cost per mile will go up at 200K with maintenance. Looking at a low cost car. A K-4 with a 10-10 warranty. Selling my Ridgeline that’s about to hit the same maintenance milestone. My argument becomes not only I get worry free driving. But at no cost increases. Because I take the money from my Ridgeline and maintenance savings and other potential savings. I’m driving for free. So tying it with a bow. It makes you wonder. Is this a grand conspiracy by the auto makers? Raise the potential maintenance high enough. Buyers by extended warranty to 100K miles. Do the minimum maintenance required. Trade in at the warranty end. How long should they last? That question is what keeps people up at night. The answer is much more complicated than it used to be.

Edited 6 hours ago by KARNUT

[Grumpy Bear]

2 hours ago, KARNUT said:

Looking up on the web you can get the information that would seem obvious. You asked engine components to do more. You get more wear. The answer is they can last just as long but required more maintenance. Apparently having to change lifters, cam and associated components are maintenance or repairs. In some research the normal life span of valve train components are 80-100k miles with 3-5K miles oil change. So the next logical conclusion would be cost per mile. I use that analogy with my wife all the time with vehicles. My Odyssey is approaching 170K. The cost per mile will go up at 200K with maintenance. Looking at a low cost car. A K-4 with a 10-10 warranty. Selling my Ridgeline that’s about to hit the same maintenance milestone. My argument becomes not only I get worry free driving. But at no cost increases. Because I take the money from my Ridgeline and maintenance savings and other potential savings. I’m driving for free. So tying it with a bow. It makes you wonder. Is this a grand conspiracy by the auto makers? Raise the potential maintenance high enough. Buyers by extended warranty to 100K miles. Do the minimum maintenance required. Trade in at the warranty end. How long should they last? That question is what keeps people up at night. The answer is much more complicated than it used to be.

 

There is a lot of good information in this post.  

 

I was hoping to get the OP's opinion though. Understand what his views are to better place his post in his context. 

 

2 hours ago, KARNUT said:

The answer is they can last just as long but required more maintenance. Apparently having to change lifters, cam and associated components are maintenance or repairs. In some research the normal life span of valve train components are 80-100k miles with 3-5K miles oil change.

 

This grabbed my attention. Only because I understood instantly context is literally everything to that web referenced search and that provide none of the kind that mattered. Yes it has the miles and oil change limits (context) but missed the most important factor....service. OR perhaps is assumed it at the level of Joe Average Consumer experience. 

 

I know, for instance from years of racing that a valve spring can be destroyed in under 50 feet or last a million plus miles in a commercial diesel engines. Cyclic Fatigue varies allot with the type of use it gets. 

 

Point is that the engine whose stress is the least, all other things equal, last the longest. It's the "other things equal" part that gets ignored. Thus as you say below:

 

2 hours ago, KARNUT said:

The answer is much more complicated than it used to be.

 

It was a good post. Went well with my second cuppa.  

 

[asilverblazer]

6 hours ago, KARNUT said:

You asked engine components to do more.

What 'more' are you referring to?

 

I'm not asking anything more than what the LS engine has been doing basically for nearly three decades. 

 

They aren't spinning significantly faster, I doubt the loads placed on those components has changed significantly.

 

Even the oil weight has been the same since at least 2007, when 5w-20 was the spec for my Silverado. (The 2016 might be 0-20... don't fault the memory)

 

I wonder if a manufacture would ever do a 'limited' lifetime power train warranty, that covers more or less a long block, block (rotating assembly, heads, cam, LIFTERS, timing set) plus transmission internals.

 

I don't need an alternator, O2 sensor, radiator, etc. warranty, but if it requires a machin shop to fix...

 

Oddly enough, Kia (I think) used to offer something ridiculous on the power train, GM used to have a 5 year 100k power train, and some dealers offer 'engines for life' here. Without delving into the fine print...