DFM/AFM Failures
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Pro
Joined: Jan 2006
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Dfm/afm
What is the latest regarding the recalls for the c8 stingray engines? are there lots of failures? what is the deal with the lifter recall? what is the fix?
is it true that the c8 z06 does NOT have the lifter issue that the regular c8 does?
is it true that the c8 z06 does NOT have the lifter issue that the regular c8 does?
Last edited by pavell; Nov 2, 2025 at 07:23 PM.
Cruising
Joined: Jul 2021
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There's no recall on C8 engines. That I'm aware of. There is a big recall on the 6.2-liter L87 V8 engine. Problems with bottom end of engine.
The 2020+ C8 has the .LT2 V8 engine. No recalls on lifters. I haven't heard of lifter issues on the 6.2 C8, correct me if there is a lifter issue on the C8
The 2020+ C8 has the .LT2 V8 engine. No recalls on lifters. I haven't heard of lifter issues on the 6.2 C8, correct me if there is a lifter issue on the C8
Race Director
Joined: Dec 2003
Posts: 10,455
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From: MI
My guess would be referring to the very common AFM issues on the L76 engine. I can understand his concerns, the design is horrible and if I could avoid the system, I would. I have a Pontiac G8 GT, and I am going to be putting in my 3rd engine in mine. Now, for full disclosure, I used to do a ton of driving…my first engine blew at 140k miles, and the second detonated at 270k. Obviously most Corvettes will not see that kind of mileage.
I am ordering a C8 after the new year, and I will not avoid the Corvette because of the AFM system, but I will be driving mine in Manual mode 99% of the time (which I understand prevents the vehicle from going into v4 mode).
I am ordering a C8 after the new year, and I will not avoid the Corvette because of the AFM system, but I will be driving mine in Manual mode 99% of the time (which I understand prevents the vehicle from going into v4 mode).
Race Director
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From: MI
Melting Slicks
Joined: Aug 2000
Posts: 2,431
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From: Early 2020 Z51 Coupe, Original Owner, Ahwatukee Foothills, AZ
On the 2020s there was a small batch of defective lifters that obviously was corrected and now is far away in the rearview mirror. My 2020 was not part of that small group.
Bottom line is find a good documented C8 and get after it!
Bottom line is find a good documented C8 and get after it!
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Thread Starter
Pro
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Ok knowing GM I figure they may have some issues in the future with the cylinder deactivation bullshit.
is there a way to run it off by running the car in some sort of performance mode ? Like the earlier corvettes
is there a way to run it off by running the car in some sort of performance mode ? Like the earlier corvettes
Melting Slicks
Joined: Aug 2017
Posts: 2,195
Likes: 2,207
From: Massachusetts
Run in Track-Mode, Manual-Shift-Mode, Z-Mode with track settings.
Rod-bearing are for L87 6.2L engine. Parts and some assy are from Mexico where the problem is caused. ( I believe the crankshaft is the problem with sloppy tolerances )
Corvette LT2 engine is U.S. assy in NY. Parts are from U.S. and I believe from Canada.
There have been some LT2 failures for AFM and other parts, no trends.
Last edited by Ron_Attleboro_MA; Nov 2, 2025 at 03:26 PM.
Pro
Joined: May 2023
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From: About an hour north west of Albany, NY
As much as I dislike AFM, I don't think I've ever read anything here or elsewhere regarding a C8 valvetrain issue due to AFM, or anything else really. What you should be scared of is the DCT 
. Make sure that thing stays under warranty!
. Make sure that thing stays under warranty!
Race Director
Joined: Mar 2007
Posts: 11,424
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Run in Track-Mode, Manual-****-Mode, Z-Mode with track settings.
Rod-bearing are for L87 6.2L engine. Parts and some assy are from Mexico where the problem is caused. ( I believe the crankshaft is the problem with sloppy tolerances )
Corvette LT2 engine is U.S. assy in NY. Parts are from U.S. and I believe from Canada.
There have been some LT2 failures for AFM and other parts, no trends.
Rod-bearing are for L87 6.2L engine. Parts and some assy are from Mexico where the problem is caused. ( I believe the crankshaft is the problem with sloppy tolerances )
Corvette LT2 engine is U.S. assy in NY. Parts are from U.S. and I believe from Canada.
There have been some LT2 failures for AFM and other parts, no trends.
CF Community Team
Joined: Nov 2005
Posts: 5,253
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From: Charlotte N.C.
Still silly. You sound like you made some really bad assumptions without any idea of reality. Maybe if you had looked through previous threads or simply asked if the Corvette has any recalls, or lifter issues… Do you have a Corvette? Have you looked in the my Chevy ap to see if your car has any recalls?
Your wording was just not well thought out.
And then when it’s pointed out your second post is a but what if…
Silly is putting it nicely.
Your wording was just not well thought out.
And then when it’s pointed out your second post is a but what if…
Silly is putting it nicely.
Thread Starter
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Still silly. You sound like you made some really bad assumptions without any idea of reality. Maybe if you had looked through previous threads or simply asked if the Corvette has any recalls, or lifter issues… Do you have a Corvette? Have you looked in the my Chevy ap to see if your car has any recalls?
Your wording was just not well thought out.
And then when it’s pointed out your second posts is a but what if…
Your wording was just not well thought out.
And then when it’s pointed out your second posts is a but what if…
Just because Chevrolet hasn’t issued a recall doesn’t necessarily mean there’s no issue. GM has a history of taking a while to acknowledge certain problems .... for example, the C7 cracked wheel issue took years before they finally admitted it, and the early C6 Z06 valve guide wear and LS7 valve problems followed a similar path. I don't think GM ever admitted any LS7 valve issue. But I don't want to get into a debate regarding this; I think the LS7 thing was overblown anyway...
I’m not trying to stir anything up, just looking for honest feedback and first-hand experiences. Appreciate any insight from those who’ve owned or tracked their cars for a while.
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