blown engine

[Almurr]

Sad to be sharing this, was hoping GM resolved the lifter issue on my L87.

55,000 KMS driven and the engine decided to seize up.

I was lucky i had 5,000 kms left on my warranty.

Is anybody facing issues like this on the newer models?

 

[TKO-ZR2]

only everybody that has one. those who haven't had engine issues are the anomaly.

 

[ZR2BIZON]

Daaaaang

 

[22-ZR2]

So sorry to hear this, we should be able to enjoy our trucks and not worry about them blowing up.

 

[MO_ZR2]

Give the search bar a whirl…

Has anyone had blown engine before 10k

Mine went at 7k

www.chevyzr2.com

2022 6.2 L Scoring cylinder piston

50200 miles On cold start hearing loud ticking noise and when warm up slight noise still. Went to dealer (still under warranty 60000 miles ) and they confirmed noise in and tore apart Moter to find 3 soring piston walls on the left side and small metal fragments on cylinders. What next now...

www.chevyzr2.com

6.2L Engine replacement

At 12,082 miles, the engine in my 2022 Silverado needs to be replaced. My local Chevy dealer isn’t telling me much so I’m reaching out to the ZR2 community to see if this is a known issue and what the specific failure might be. I was driving on the local freeway at about 70mph and it was as...

www.chevyzr2.com

6.2 Lifter/Engine Failure Poll

For the benefit of forum members and those internet researchers, if you have experienced the dreaded lifter failure please post details after voting (I.e. model year, vin, production date, mileage at failure, etc) You can update your vote IF you unfortunately win this lottery after your initial...

www.chevyzr2.com

You’ll find more than you care to know.

 

[MrScottly]

Only 2 kinds of them 6.2's...Those that have blown, and those getting ready to.

 

[44sixpack]

Some of the clearance problems were corrected last year.

The lifter problem can be eliminated with the Range chip. there is a night and day difference in 5.3 lifter failures between those running chips and those without. same will apply here.

They certainly have problems but it's not as hopeless as it seems on the internet. do what you can to help and have an extended warranty for backup and just drive.

 

[AXE]

Only 2 kinds of them 6.2's...Those that have blown, and those getting ready to.

And those that do oil analysis to see what's happening inside!

 

[securityguy]

The lifter problem can be eliminated with the Range chip. there is a night and day difference in 5.3 lifter failures between those running chips and those without. same will apply here.

The problem can never be eliminated as long as DFM parts are inside the engine. Just because the DFM can be disabled doesn't make the engine bullet proof from a DFM related parts failure. Where is you data on the "night & day" difference in 5.3 lifter failures between those running chips and those without? Sounds like BS to me and I can't imagine there is any real data since the chips haven't been out that long an I doubt there is a database tracking this either.

 

[DNZR2]

The problem can never be eliminated as long as DFM parts are inside the engine. Just because the DFM can be disabled doesn't make the engine bullet proof from a DFM related parts failure. Where is you data on the "night & day" difference in 5.3 lifter failures between those running chips and those without? Sounds like BS to me and I can't imagine there is any real data since the chips haven't been out that long an I doubt there is a database tracking this either.

@securityguy did you take the AmSoil into account ?

 

[44sixpack]

The problem can never be eliminated as long as DFM parts are inside the engine. Just because the DFM can be disabled doesn't make the engine bullet proof from a DFM related parts failure. Where is you data on the "night & day" difference in 5.3 lifter failures between those running chips and those without? Sounds like BS to me and I can't imagine there is any real data since the chips haven't been out that long an I doubt there is a database tracking this either.

It doesn't matter if you believe it or not it's true. the chips have been around long enough to prove it in the last generation of these engines, and it'll be proven again in this one. the GM tech's are the ones saying it. look at how the system works and explain why keeping the lifters full with full lubrication like they should have can't help anything. the DFM lifters are made by the same company that makes most of the lifters for GM and other manufacturers so the poor-quality fairytale doesn't fly. it's not the lifter as much as how it's being abused. and we can stop that now.

Now that's not to say there's no drawbacks to the DFM lifters even when kept full but it makes the risk acceptable.

 

[44sixpack]

@securityguy did you take the AmSoil into account ?

Can we move on to 4th grade attempts at humor soon?

Better oil actually will decrease the chances of lubrication related failures, so your lame attempts at humor kind of do work at your expense . and for that we thank you.

 

[AXE]

It doesn't matter if you believe it or not it's true. the chips have been around long enough to prove it in the last generation of these engines, and it'll be proven again in this one. the GM tech's are the ones saying it. look at how the system works and explain why keeping the lifters full with full lubrication like they should have can't help anything. the DFM lifters are made by the same company that makes most of the lifters for GM and other manufacturers so the poor-quality fairytale doesn't fly. it's not the lifter as much as how it's being abused. and we can stop that now.

Now that's not to say there's no drawbacks to the DFM lifters even when kept full but it makes the risk acceptable.

I tend to agree, I haven't researched it enough to be certain if there is enough anecdotal evidence. It also makes the motor and transmission run better. Just seems smoother and more connected, that has to translate into something beneficial.

 

[MO_ZR2]

Agreed. It’s certainly not going to hurt. Ultimately there is no actual hard data to prove these how much beliefs (we know it helps but we’ve still seen posts with folks having failure and the range in the past so it’s not 100%…the exact % is a mystery for the universe), it’s people’s logical opinions. We can debate until GM comes out with another engine with a new issue. one must do your own homework and in the end, “acceptable” failure risk / rate of, is each persons judgment.

All mechanical items wear, some at higher rates, some at lower…could this help, sure, how much, no one knows for sure. you gotta decide how you spend your money, then enjoy it…opinions are free, take their worth accordingly.

Forum etiquette wise, I would like to see these redirected to a dedicated thread each time someone has this issue, asking if anyone has this issue

 

[MrScottly]

It doesn't matter if you believe it or not it's true. the chips have been around long enough to prove it in the last generation of these engines, and it'll be proven again in this one. the GM tech's are the ones saying it. look at how the system works and explain why keeping the lifters full with full lubrication like they should have can't help anything. the DFM lifters are made by the same company that makes most of the lifters for GM and other manufacturers so the poor-quality fairytale doesn't fly. it's not the lifter as much as how it's being abused. and we can stop that now.

Now that's not to say there's no drawbacks to the DFM lifters even when kept full but it makes the risk acceptable.

If you go back to the earlier models of that system, only certain cylinders were tasked with "shutting off". In those systems, only the cylinders that shut off had lifter issues.
Consider also the 6.6 gas in the HD trucks...No DFM, no failures. Parts are made by the same suppliers, which sort of, kind of, in a non-scientific way, settles the parts quality issue.
I tend to believe...I'm convinced...If you deactivate DFM and let those lifters drink, your problems will go away.

 

[AXE]

If you go back to the earlier models of that system, only certain cylinders were tasked with "shutting off". In those systems, only the cylinders that shut off had lifter issues.
Consider also the 6.6 gas in the HD trucks...No DFM, no failures. Parts are made by the same suppliers, which sort of, kind of, in a non-scientific way, settles the parts quality issue.
I tend to believe...I'm convinced...If you deactivate DFM and let those lifters drink, your problems will go away.

Also the longer term issue with AFM was uneven cam wear which would also reduce engine life. You could still get 100-150k. I never had any problems with AFM, but sold it before 100k. My brother had one with 130k and seems to run just fine.

 

[8ball_99]

That sucks! Sorry you have to deal with that. One of the main reasons I went back to a HD. DFM system is just a ticking time bomb IMO. People are quick to say the failure rate is a low %. All the big youtube and automotive publishers never mention it. Some even almost brag about the feature like it's a positive. I think they just don't want to bite the hand that feeds them. Any GM group is littered with lifter failures and seized engines though.

 

[MrScottly]

Any GM group is littered with lifter failures and seized engines though.

GM makes Hemi's, too?

 

[DNZR2]

Can we move on to 4th grade attempts at humor soon?

Better oil actually will decrease the chances of lubrication related failures, so your lame attempts at humor kind of do work at your expense . and for that we thank you.

Nope. Just wanted to ride the oil merry go round since we haven’t done it in a while.

 

[securityguy]

I tend to believe...I'm convinced...If you deactivate DFM and let those lifters drink, your problems will go away.

And I am convinced that someone with the Range device installed to disable DFM will eventually have a lifter failure. I don't think the problem will "go away"...it may just be delayed. If I go back to a 1500 in the future with the 6.2, I will buy the Range. But, I also am a realist and don't expect it to be a miracle solution to the lifter issues.