5.3 - Has GM Resolved the Lifter Failure Issue?

[Fairweatherider]

I searched but couldn't find anything on the issue. Specifically for the 5.3 engines, has GM resolved the dreaded collapsed lifter issue? I see a reference here to a bad batch of lifters being used in 2020 and 2021 but that is all. Am I in the clear? Or are people still having problems with the 5.3 engines even after 2021?
I just ordered a 2025 Yukon and am looking to avoid the issue. I gather here after reading that I should install a DFM disabler device, change the oil after the first 1,000 miles, then do regular 5,000 mile oil changes. After that, can I let my guard down? Or am I still at risk.

Separately, I am curious to know if the 6.2 uses the same part number for lifters as the 5.3 I see a lot on here where the 6.2 lifters still fail, even after 2021, and that it could be related to a bad lubrication situation so it may not be a "bad lifter" from the factory.

 

[RG23RST]

I searched but couldn't find anything on the issue. Specifically for the 5.3 engines, has GM resolved the dreaded collapsed lifter issue? I see a reference here to a bad batch of lifters being used in 2020 and 2021 but that is all. Am I in the clear? Or are people still having problems with the 5.3 engines even after 2021?
I just ordered a 2025 Yukon and am looking to avoid the issue. I gather here after reading that I should install a DFM disabler device, change the oil after the first 1,000 miles, then do regular 5,000 mile oil changes. After that, can I let my guard down? Or am I still at risk.

Separately, I am curious to know if the 6.2 uses the same part number for lifters as the 5.3 I see a lot on here where the 6.2 lifters still fail, even after 2021, and that it could be related to a bad lubrication situation so it may not be a "bad lifter" from the factory.

Outside of the known bad batch from 2021 there really aren't widespread lifter issues with either engine that can be attributed to DFM. Yes they can fail but the de-act mechanism is absurdly reliable when you think about how many times they move. My dealer is on the smaller side so lifter jobs trickle in. For newer model stuff we may go weeks without seeing one. Even when they pop up chances are likely it's one of the older AFM engines or the AFM 5.3 that carried over with the 6 speed transmission in certain Custom trim trucks. To drill down even further I see roller bearing issues with lifters causing a tick that has nothing to do with cylinder deactivation on occasion.

There's really no need to get a disabler until your warranty is up. Even then only if the subtle vibrations from DFM bother you. 5k miles is a good oil change interval. Drive it and enjoy it.

 

[Fairweatherider]

After reading about all of the issues on this forum, that really brings me peace of mind. Thank you for that.