Jump to content

Finally Lifter failure at 98k miles

11bravoZ71
 Share

Recommended Posts

11bravoZ71 Enthusiast

11bravoZ71

Posted
Posted (edited)

Reporting in to say my barely paid off 2 months ago ohh the irony and timing am I right!? 2019 bought new z71 l84 5.3 had lifter failure at 98k miles.
 

Background information I had DFM disabled via Diablo tuner around 60k miles. And changed my oil and filter every 5k miles sometimes even 4k miles . Used 0w30 for most of its life. I really thought  it would never happen to me 🤣🤣🤣

 

I was off roading on some trails and when I floored the gas one time I had instant power reduced  and clankingggggg. Typical lifter sound you hear everywhere. My question is I haven’t had it officially checked out it’s just been parked. I see Multiple DFM delete kits online. And was wondering what what’s the difference between them. I already have  DFM disabled via tuner. so in theory I just need the hard parts replaced and any other damaged components repaired. I refuse to buy another new truck not in this economy ever. Will not be a slave  to payments for my entire life lol. Rather fix. Any opinions would be appreciated.

 

And also I am a testament that tuning off DFM via tuner does NOT save your lifters. And changing your oil every 5k does neither. Just flip a quarter at any mileage and it’ll go boom when it wants to. 

Edited by 11bravoZ71
CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Usually the difference in a lot of AFM or DFM kits is what parts they include or don't. Like lifters and trays, is the camshaft just a stock grind with VVT or without VVT.

 

And you'll need to tune it again if you truly delete the DFM on it. If you remove all of the parts that go with it, there are many many DTC's and other settings that will need to be turned off to make it run. The tuners only disable the "master" switch for the AFM or DFM. In HP Tuners it's one drop down menu you change. But if you remove all the parts, you have to disable like 20 trouble codes for the AFM system and do other changes to the calibration file to stop limp mode or misfires.


Tuning a 2019+ truck isn't cheap and I'm not sure that Diablo has the ability to do it all. With HP Tuners it costs a pretty penny to do any real tuning on them.

  • Like 1
TheRiver Enthusiast

TheRiver

Posted
Posted

I had a "non-AFM" lifter go bad on my 2016 at 106, 2xx miles............................ran in M5 around suburbia, and used Range device for long Interstate highways from less than 300miles on the clock..............................I feel your pain.......................

  • Like 1
11bravoZ71 Enthusiast

11bravoZ71

Posted
  • Author
Posted

The pain is all to real @ the river. 
me laughing about is what makes it bearable 🤣 but I’m not really laughing lol. And camgtp thanks for the information!

 

If I still need to tune “tune” that much especially since I’m in California it might be a damn hassle. My ECM was originally locked from the factory and I was lucky to get it unlocked out of state and that’s how I was able to “tune” off DFM via handheld Diablo sport tuner. 
I need to find a shop that knows how to do this right otherwise I’ll be forced to rebuild it the OEM method. SMH 🤦‍♀️ 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,760
    Total Members
    8,960
    Most Online
    MASONV88888888
    Newest Member
    MASONV88888888
    Joined

  • Who's Online   2 Members, 0 Anonymous, 1,453 Guests (See full list)

  • Latest Articles

  • Posts

    • MASONV88888888
      Another 6.2L engine failure!

      By MASONV88888888 · Posted

      My 2025 Silverado 1500 had to receive a brand-new engine (long block) under warranty last month at only around 16,500 miles. Before the replacement, the truck repeatedly displayed "Engine Oil Level Low" warnings, even though the Oil Life Monitor still showed around 50% remaining after about 6,000 miles since my last oil change. After seeing the warning several times, I checked the dipstick with the engine cold, and the oil level was completely normal. The next day, the message escalated to "Add Engine Oil." At first, I assumed it was just a faulty oil level sensor, so I brought the truck to the dealership. After inspecting the engine, they found internal cylinder wall scoring and ultimately replaced the entire long block under warranty. Before this happened, I was planning to install a 4-inch lift and suspension upgrade on my truck. After needing a new engine at just 16,500 miles, I honestly don't see the point anymore. I also contacted GM to ask whether my vehicle qualified for a buyback, but I was informed that it does not at this time. Anyway, this experience has left me with serious concerns about the long-term reliability of this engine. I sincerely hope NHTSA expands the current investigation or recall to include 2025 model and performs a thorough inspection of affected vehicles. My biggest concern is that these engines may fail shortly after the powertrain warranty expires. If GM truly stands behind this engine, then at the very least, please consider extending the powertrain warranty to 10 years for affected owners. That would go a long way toward restoring customer confidence.
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      Without exception but then I'm the odd duck, right? I know what goes into that test, how it is calculated and thus how to beat it. But EPA values are often not beaten by the general public and the government has in past years adjusted the means and methods to come to those values to more closely approximate "Joe Average".    The only real trick to beating that EPA average is don't drive like "Joe Average".    It's the same method you used to profit from "Economic Migration" and in doing so beat the 'stats'. But you, like me, are not "Joe Average".     The thing you don't seem to grasp is this "Purchasing Power Index" isn't forward looking. It doesn't predict what it going to be but looks backward and states what it was. They are not telling us what the THINK, they are telling us what they MEASURED. Example:    Wife says "I'm going to lose 40 pounds by Christmas". May she does, maybe she doesn't but the doctors office who weighed her when she made that statement and again at Christmas only REPORTS what the RESULT was. You and I can banter about what was possible and what aunt Tilly did till the cows come home but the result is the result. Arguing otherwise is.....irrational. That's all I'm saying. This isn't about:      What you are calling a 'Statistic' is a RESULT not a CALCUATION and as a result the RULE. Like gravity as a rule, it can not be broken. 
    • MASONV88888888
      Rattle in the rear!

      By MASONV88888888 · Posted

      Just wanted to say thank you for posting this. Years later, your thread is still helping Silverado owners.   I bought my 2025 Silverado 1500 in January 2025, and I've had what feels like the exact same rattle since day one. After reading your findings, I believe my truck has the same issue with the cable carrier contacting the rear sliding window. To be honest, I had pretty much given up on pursuing the issue. It wasn't until I recently drove another brand's pickup that I realized just how quiet their cabin was—and how noisy mine has been all along. On my truck, the rattle happens on almost any paved road, gets even worse on rougher pavement, and I can even hear it during braking and acceleration.   I actually referenced your thread when submitting my case to GM, hoping they'll recognize this as a recurring issue instead of treating it as an isolated incident. The reason I reached out to GM first is because my dealership told me they would need to keep the truck for at least two days just to diagnose the problem. I was concerned that even after two days, they still might not be able to identify the source of the rattle before giving the truck back to me. I had also asked a few dealerships about this issue during previous service visits, but none of them seemed to know what was causing it or had a solution. That's why I decided to contact GM directly first, hoping they might already have an official repair procedure or guidance for this issue.   I also hope GM eventually comes up with an official fix for this problem. I have a feeling there are many Silverado owners experiencing the same rattle, but most either choose to live with it or simply don't know what the cause is.   Really appreciate you taking the time to document your diagnosis. Your post is still making a difference years later.
    • Buckwild27
      Gas Prices

      By Buckwild27 · Posted

      I have 2 choices. 
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      Do you have access to BP fuels? Some stations have Silver 91 E-0 priced the same as their 93 E-10.  There is a local Marathon with 90 alky free for $6 a gallon but I go down the road to BP for $5-ish. They also have a 100 E-0 but that stuff is $10 a pop. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...