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

  • Latest Articles

  • Posts

    • Z45
      Fluid Change Questions

      By Z45 · Posted

      I would be surprised if the diff's were not filled (with the cheapest gear lube) at the axle factory before being shipped to GM.  If you ever watched them building trucks they install the axles and all suspension parts with the frame upside down and then turn it over before its time to install the engine.     Too much gear lube in a axle can be worse than not enough especially with a lower quality GL where is get whipped up with entrained air (foam)  weakening its ability to lubricate.        
    • MORSNO
      Oil Consumption

      By MORSNO · Posted

      This is the 6.6 gasser section of the forum, you should either delete or modify your previous post as it is misleading for anyone looking for factual information on their 6.6 gas engine.
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      Well....I've done my first intake gasket. Probably wrong, but...we'll see?   Ultra black on the china walls and 1/4" up onto the sides of the intake gaskets. Permatex High Tack (couldn't find Gaskachinch) on the head side of the intake gasket. I read wrong and it says you're supposed to put it on the mating surface of the head, not the gasket. Hoping it's like a PB&J sandwich where it doesn't matter what side the PB goes on so long as there's jelly. That crap is messy/sticky and I got a dab or two on the intake port openings, tried to wipe it off. Hopefully it won't be a big deal and will only aid in sealing.   Per instructions I left the intake (top side) of the gasket dry except for a light smear of RTV around the coolant ports. Wiggling the intake in there was a bear but I had help to free me of surrounding wiring/stuff but I was basically able to set it straight down lined up with the bolt holes.   I did not think to wait until the RTV skinned over but there probably was 5-10 minutes while it sat before installing the intake.   Bolts finger tight first. Then, followed the Chilton's manual pattern to snug them to 15 lb-ft.   Waited a little over an hour, and then did the final torque in sequence again to 35 lb-ft.   Yesterday I replaced the fuel pressure regulator and got my new "nut and bolt kit" (fuel lines) installed. Damn GM used security torx on the spider, which I don't have, so I got scammed at the local HW store for an off-brand security Torx bit set.   The new driver's door mirror arrived yesterday, so, there's a chance this thing could be running and road legal tomorrow? I don't want to get my hopes up.   This will be my first time stabbing a distributor, too. Although, lucky me, someone else marked the old distributor for removal previously, I did see that. (Someone's been here before!!). Engine is still at TDC so it *should* be just a matter of transferring the mark to the new dizzy and rotating it into place.
    • KARNUT
      2027 GMC Sierra: Official Discussion

      By KARNUT · Posted

      He has his dad’s newer truck he’s put away. He has several old cars he rotates between him and his family. I’ve seen a restored square body and a SS Chevy truck he’s sometimes drives. He did raffle off a new suburban recently. As much as he is watched if he drove new stuff as a rule we’d know it. It would be fine by me. I don’t care what people prefer. I got one more new one in me. I’d rather my wife get one. I can’t get her out of the Genesis. Don’t tell anyone. I want her to get an electric truck. I want to put a generator in the back. Just because. She hasn’t bit yet.
    • Atlas
      2027 GMC Sierra: Official Discussion

      By Atlas · Posted

      Yes, you must have seen my thread on the Blazer. HOT GARBAGE, but I love them anyway. I'm convinced every car guy has a soft sport for an S/T series somewheres. Probably even a Panther too, if I'm being an honest car guy. That doesn't mean they aren't junk. And they definitely don't get better with age. I sometimes play with old cars, but that's by choice. I don't rely on them and they aren't my everyday fleet.   Derek plays the common man on Youtube and that's no doubt where he started. Now he has Youtube money (and Motortrend, etc). You think his crews and his wife ride around in old beaters when they're chasing him and his wrecks across the country? No he's got newer and nicer stuff for that, you'll see glimpses of it in the footage.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...