GM 6.2L troubles aren't over.

[02SE]

With "just in time" manufacturing....A true fix would likely cause a stop in production. I would just put Nodular Iron Cranks in them as the problem lies with some of the Forged Steel Crankshaft finishing's.

Crank grinding is an art.

Have you heard any word of the 2019 LT5 having any issues?

 

[robbobster]

The cylinder-deactivation technology in the 5.3 and 6.3 are the exact same, with the same issues. The 6.2 adds crank issues.

That should be an L86 then, AFAIK. My 2019 Yukon was built in 2018, though the pickup got them first. L86 to L87 allegedly changed bearing suppliers, AFM to DFM, added stop/start capability, oil pump appears to be unique to the L87, and the crank machining issues that GM admits. Added the flex fuel option too.

Half of the lifters in the L86 are crappy.
All of the lifters in the L87 are crappy.

 

[ESP9935]

I don’t like AFM bcs of who pushed it - but, I live in truck central - high income LT folks - and don’t know anyone who are having either of these issues - some north of 200k doing real work …
And as Chris has pointed out - all can foul NORMAL lifters as well … some feedback from mechanics is like asking a Doctor if any sick people have been in …
Unlike the cars mentioned often - Ford, GM, and RAM do the work hard/play hard in N.A. - over to BrendanC …

They probably don't have 8L/10L issues either, right?
The issue is pervasive whether your anecdotes reflect it or not.

 

[D60]

Mine came disabled since some 21's had an issue getting some afm chip computer box thing for it so they produced mine without it so I got lucky.

I love how these types of things are THE mOSt ImpoRtANt tHiNG EVAR tO SaVE tHe PLaNeT....except when we can't get parts then it's like, "Meh, never mind."

 

[D60]

Toyota is just replacing a bunch of engines without them failing as far as I have heard.

Good way to be. Not giving people the runaround.

Are they footing the supplier with the bill like they did with frames? Dana got really screwed on that mess.

Plenty of horror stories on Tundra replacement.

You could argue this is an individual dealer issue but I'd point out they aren't paying enough labor time so it's difficult to expect techs to care.

Dirty interiors, greasy fingerprints, new rattles, things not put back together, broken fasteners and most importantly: months of delays.

It's not much different than open heart surgery: you're not likely to come back 100%.

I understand engines are replaced all the time, but usually on older vehicles with higher miles where they already show wear and tear and someone's been in the engine bay dozens of times for alternator, a/c compressor, radiator, water pump etc....thus you EXPECT some broken clips and signs of previous work