Lifter Failure Question

[Black02Silverado]

On 11/4/2023 at 11:12 AM, alrockaz said:

157 days later and the truck is back. Wow, that was a journey. The last delay was waiting for Holley to release their newest product, which is a handheld tuner with the ability to unlock the ECM and TCM on these newer trucks. Before this product, you had to send your ECM to HP Tuners or Holley (and presumably others) and it was hundreds of dollars just to unlock. Programming was on top of that. There were issues updating the tuner and he spent six hours getting it unlocked and tuned, with a lot of that time on the phone with Holley. Even without the challenges it would have probably been at least a two hour process. We got one of the first couple of dozen that were produced so I'm sure there are programming bugs to work out.

Heads were cleaned and rebuilt and all of that buildup from the direct injection engines is gone. Only driven it a bit so far but will drive it more today and change the oil again tomorrow just in case there are any tiny metal bits from the new parts in the engine - lifters, pushrods, camshaft, valves, valve seats.

The unlock for these ECMS is eight HP credits ($400) plus shop labor when applicable, and you need to have a certain version of HP tuners, and maybe specific equipment as well. 

 

New Holley tuner  https://www.holley.com/products/tuners_and_programmers/handheld_tuners/diablosport_intune_i3/parts/8225-R

It's cool that Holley came out with this.  It gives options for sure.  I still feel you get the best tune  and capabilities when you have it professionally tuned because it covers everything and not just a preset tune.  A dyno tune or street driven tune is the way to go.  Since most don't think twice about dropping $5K on wheels lift and tires, what's $2k for a professional tune that you can have forever.  Tire's wear out and there is another $1,500 at least, every time. 

[SierraAT]

27 minutes ago, SierraAT said:

Lifters just went out on my 2017 6.2, 115k miles.  Total cost to repair was $5,600.  The performance shop that did the work said they do the DOD delete 8-10 times a MONTH.  Some of those are jobs are pre-emptive. 

 

If you buy a late model GM, you should set 5k to the side for the high probability that your lifters are going to go with the potential of further damage happening as well, I had a pushrod that was also bent.  The AFM/DOD system is pure Democrat inspired climate change virtue signaling bullshit.

I also had the Range AFM Disabler installed since about 50k, and this still happened.  Chevy dealership wanted 8k for the repair and I told them to pound sand.  Now I'm investigating the progress of the class action lawsuit against GM.

 

The amount of faulty trucks out on the road is vastly underreported.  This is happening way more than people on the forums think and GM is laughing all the way to the bank with no repercussions.

Edited December 28, 2023 by SierraAT

[NorthernX31]

6 hours ago, SierraAT said:

I also had the Range AFM Disabler installed since about 50k, and this still happened.  Chevy dealership wanted 8k for the repair and I told them to pound sand.  Now I'm investigating the progress of the class action lawsuit against GM.

 

The amount of faulty trucks out on the road is vastly underreported.  This is happening way more than people on the forums think and GM is laughing all the way to the bank with no repercussions.

What about the Pulsar LT? 

[Bikerjon]

1 hour ago, NorthernX31 said:

What about the Pulsar LT? 

You can electrically disable the AFM or DFM. That does not solve the problem of collapsed lifters, bent pushrods or a flattened camshaft. SierraAT just stated I also had the Range AFM Disabler installed since about 50k, and this still happened. 

[customboss]

On 12/28/2023 at 8:38 AM, customboss said:

Grumpy can you find the link to the 2.7L L3B tiny roller lifters that GM had on their service warning?  Not a TSB but maintenance warning. I can't think well enough to find it.  

 

found it. https://gm-techlink.com/?p=16219

 

 

 

 

 

Edited December 30, 2023 by customboss
post pics

[dgstarr63]

Don't waste your money on the Range, mine failed with the Range installed. If you want a Range I will sell you mine for $100.

[Mshawn]

On 6/23/2023 at 8:50 AM, Grumpy Bear said:

 

Three reasons for a failure. 1.) Abuse. 2.) Flaw. 3.) Lubrication issue. 

 

Is anyone going to admit to abusing their truck? Over rev. Not changing oil. Improper oil. Overloading. 

 

@CamGTP in his post on April 3 mentioned the flaw. It happens to all makes and models. As @l1tech mentioned in his post on the 16th, this happens to non-AFM lifters as well. Heat treat is usually the culprit. Sometimes machining errors. Usually by batch. When it is the AFM lifter is can be traced to the VLOM sometimes. In high milers the lifter bore wear. Which takes it to reason #3. Lubrication. 

 

When parts touch they fail. Two things keep parts from touching. Viscosity and wear additives. Those additives are consumable and as the industry moves toward its mpg goals and oil for life goal these additives are being relied upon to do the work viscosity should be doing more and more. Sometimes when one walks to close to the edge...they fall off. When GM Engineers say "inadequate oiling' I don't think they are referring to the volume being supplied. Lifter bores don't wear out in 60K-120K if the oil is doing its job. Neither do adequately hard lifters/axles and cams. Not even in a million miles. 

 

Hands in the air, how many Ecotec3 V6's suffer this failure? It does happen. Like finding a Unicorn often. Before someone says, "But there are way more V8's"....lets normalize the statistic by saying how many per thousand units. They use the same parts from the same suppliers. Even the same oil pump. So, what's the difference? Ya all know the answer to that 

 

Let's say 0W20 is actually effective. It can only be so if it STAYS a W20. One of GDI's biggest flaws is fuel diluted oil. So much so that 2.5% is considered 'normal' by everyone but a REAL Tribologist. Okay, and me And what happens to viscosity when you dump a solvent (gasoline) in your oil? That said, not the only culprit. VII polymers are not all created equal. And pretty all of them will pass a DEXOS license test battery. Viscosity loss test have a pretty large window and many lube test services do as well before they send up the red flares. This means OCI is critical if you insist on walking the edge of the cliff. 

 

If you insist on using 0W20 then choose one at the upper end of the W20 viscosity spec and one with a 'stay in grade' VII package and one with enough antiwear to cover the silly long OCI's you believe are 'fine' and are not. Or be proactive and shorten the OCI. Don't use a UOA lab that serves up "tasty results' like Micky D. 

 

OR do what you've always done and get the results you've always got. 

 

I got to say this quote is right no the spot about understanding the question of “ why” . I couldnt have agreed more with what is said here!! 

 

 

 

 

 

 

 

 

 

[Mshawn]

On 6/23/2023 at 9:14 AM, KARNUT said:

When we built a better mouse trap we got copied. When we used the better mouse trap to do better work we got costumers. That seems to be lost on GM. Changing oil every weekend isn’t possible for everyone. Imagine the wait times if everyone did that. I’ll just buy the better mouse trap. 

Curious,what is your better mouse trap in this situation? Not trying to be a smart ass, just wondering.

Edited January 16, 2024 by Mshawn
Misspelling

[KARNUT]

2 hours ago, Mshawn said:

Curious,what is your better mouse trap in this situation? Not trying to be a smart ass, just wondering.

In my case GM before 2007. I’m not convinced GM has cylinder deactivation down yet. I wouldn’t buy one. But there’s not a new truck I would buy currently. I’m retired I don’t need a new one anymore. 

[Mshawn]

On 1/15/2024 at 10:44 PM, KARNUT said:

In my case GM before 2007. I’m not convinced GM has cylinder deactivation down yet. I wouldn’t buy one. But there’s not a new truck I would buy currently. I’m retired I don’t need a new one anymore. 

I totally understand. I’m 56 and have been a tech most of my life. I want one new vehicle before I retire, I’ve never owned a new vehicle in my life. So I pulled the trigger on one. My 2004 Silverado which I still have is and excellent truck. 5.3L 347,000 and still going. Just mantaince on her. After warranty is out on May 2023 RST, I’m pulling it into the shop and doing dfm delete I’ve already ordered everything from Gwatney performance In Jacksonville. Then I’m going to through her on the trailer and take to them for the reflash on the pcm. 

[KARNUT]

1 hour ago, Mshawn said:

I totally understand. I’m 56 and have been a tech most of my life. I want one new vehicle before I retire, I’ve never owned a new vehicle in my life. So I pulled the trigger on one. My 2004 Silverado which I still have is and excellent truck. 5.3L 347,000 and still going. Just mantaince on her. After warranty is out on May 2023 RST, I’m pulling it into the shop and doing dfm delete I’ve already ordered everything from Gwatney performance In Jacksonville. Then I’m going to through her on the trailer and take to them for the reflash on the pcm. 

That’s sounds like a good idea. My new at the time I retired 2014 Texas Edition GMC. Was the best riding, handling, serine truck I ever owned. I loved the E-85 option for extra power. The 342 gearing was perfect and at 72 mile per hour cruising speed got 22 miles per gallon. I put a cover on the bed it was perfect. The V-4 modulation drove me nuts so I bought a hypertec programmer and turned it off. Then I joined this website. Reading about all the extra tech and hardware internally to make it all work. For maybe tiny pit of fuel mileage. It just made my hate the truck. My wife needed a step ladder to get in. I traded it in for a SUV as a trip vehicle. Bought the Avalanche as my personal going to town vehicle. I’m always looking for the next one. If the deal is good enough. I could potentially see me getting another 14. If it’s cheap enough. 

[NorthernX31]

I figured I should close the loop and say that my truck was fixed. The dealership replaced all lifters the camshaft and a few bent pushrods under warranty. The truck had 97k kilometers at the time of repair and I've decided to keep the truck and roll the dice on the next lifter failure issue. I hope I don't regret this as I will be paying for the next set.

[Bikerjon]

58 minutes ago, NorthernX31 said:

I figured I should close the loop and say that my truck was fixed. The dealership replaced all lifters the camshaft and a few bent pushrods under warranty. The truck had 97k kilometers at the time of repair and I've decided to keep the truck and roll the dice on the next lifter failure issue. I hope I don't regret this as I will be paying for the next set.

I am very happy that you got it warrantied. Thanks for the info!

[Brian Quattlander]

Well - ready to join the party - 2019 Sierra 6.2L / 10- Speed - 57k - 0/20 Mobil 1 oil changes every 4-5k - Mobil 1 / Wix Filters every oil change - Premium fuel since purchased - First dealership was, well, let's just say will never go back - off to the second dealership next week - still in warranty (thank goodness) - I'll keep you all posted.

 

[newdude]

24 minutes ago, Brian Quattlander said:

Well - ready to join the party - 2019 Sierra 6.2L / 10- Speed - 57k - 0/20 Mobil 1 oil changes every 4-5k - Mobil 1 / Wix Filters every oil change - Premium fuel since purchased - First dealership was, well, let's just say will never go back - off to the second dealership next week - still in warranty (thank goodness) - I'll keep you all posted.

 

 

 

 

Do you have to post your exact story like 5 different times in 5 different threads?  Chill.