[Riverside2SS]

Flat bedded to local dealer Saturday morning after a flashing check engine light and service ESC warning message. I was only a few miles from home and limped it back. Running like it was only firing on 4 cylinders. Still under full warranty so called Onstar roadside assistance. Diagnosed monday morning as......yep you guessed it, collapsed lifters on one bank. Replacing all 8 but of course won't be proactive and replace lifters in other head. My luck.... Bent exhaust pushrod on cyl 1... Did get an oil change and coolant change so at least I can reset mileage for those items.....

[SomeGeoffGuy]

Sorry to hear - how many miles?

-Geoff

[FarmerFran]

Interesting. My 2020 SS left me on the side of the highway with oil all over the ground. If you look by the front tire you can see all the oil

[bishopts]

One of my techs diagnosed a 2020 suburban as a collapsed lifter the other day. He pulled it apart and couldn't find anything wrong with the lifter. It ended to being the VLOM was bypassing and unlocking the lifter.

[m6-lt1]

The L87 recall has to do with the bottom end, not the lifters. Lifters have been occasionally a problem for the LT1, L87, L86 and L83 (I think that’s what the 5.3 is called) so that is nothing new.

I do believe though that our engines should have been recalled as well since the bottom end of the LT1, L86 and I’m pretty sure the L87 are all the same exact parts. There has been a ton of SS 1LE failures in the Facebook group. There’s no way I’m keeping my car out of warranty.

[arpad_m]

Originally Posted by Riverside2SS

Flat bedded to local dealer Saturday morning after a flashing check engine light and service ESC warning message. I was only a few miles from home and limped it back. Running like it was only firing on 4 cylinders. Still under full warranty so called Onstar roadside assistance. Diagnosed monday morning as......yep you guessed it, collapsed lifters on one bank. Replacing all 8 but of course won't be proactive and replace lifters in other head. I know this isn't supposed to be happening with LT1, but take this post as a warning and heads up, it could be coming your way.

Unfortunately, all GM V8 engines with AFM have been susceptible to this since the beginning of their runs. It is not super frequent, but it did happen regularly on older model years, too. This issue is not the same as the latest L87 plague.

[Bad Anvil Garage]

I daily drive my car. This lifter thing concerns me but I like that even my heavy-footed Camaro driving has better mileage than my 2019 V6 Traverse. Especially with the cost of 93 octane.

Is the simple fix just to program it out and lose the better highway mileage? Right now my average is 21mpg. What's the typical mileage on these without DOD? 14?

[m6-lt1]

Originally Posted by Bad Anvil Garage

I daily drive my car. This lifter thing concerns me but I like that even my heavy-footed Camaro driving has better mileage than my 2019 V6 Traverse. Especially with the cost of 93 octane.

Is the simple fix just to program it out and lose the better highway mileage? Right now my average is 21mpg. What's the typical mileage on these without DOD? 14?

In theory, that does help with the reliability but the afm lifters are still present in the engine. It used to be simple to replace lifters but some genius decided to move their location to under the cylinder heads instead of under the intake manifold like Gen I and II engines.

[arpad_m]

Originally Posted by Bad Anvil Garage

I daily drive my car. This lifter thing concerns me but I like that even my heavy-footed Camaro driving has better mileage than my 2019 V6 Traverse. Especially with the cost of 93 octane.

Is the simple fix just to program it out and lose the better highway mileage? Right now my average is 21mpg. What's the typical mileage on these without DOD? 14?

My highway mileage is 25-26 mpg without AFM even now on my built engine, see specs below. Stock I was able to approach 30 mpg on the highway (city is and was obviously way, way worse).

Delivering better mpgs than a Traverse is not a huge feat, let's be honest , that thing is a gas slurping pig.

[Abubaca]

Is the simple fix just to program it out and lose the better highway mileage?

The AFM lifters are nowhere near as reliable as a good old fashioned lifter, however 90% of the failures are due to the (making this term up) oil delivery system/manifold that is physically responsible for managing flow to the lifters. Sooooo, with manual cars, or if you've tuned it out of your automatic car......that oil management system can't cause the problem. Still, they're not great lifters, so problems do occur, but at a much lower rate.


Back to the main topic here.......what years are affected by the current problem we're seeing with the 6.2's? Is it all years?

[MT-SS1LE]

Originally Posted by Bad Anvil Garage

I daily drive my car. This lifter thing concerns me but I like that even my heavy-footed Camaro driving has better mileage than my 2019 V6 Traverse. Especially with the cost of 93 octane.

Is the simple fix just to program it out and lose the better highway mileage? Right now my average is 21mpg. What's the typical mileage on these without DOD? 14?

No where near that big of a difference. I started using a Range AFM disabler last year and the MPG difference is maybe 2 MPG highway.

[Riverside2SS]

Originally Posted by SomeGeoffGuy

Sorry to hear - how many miles?

-Geoff

8996

[Bumbleboy92]

Originally Posted by Bad Anvil Garage

I daily drive my car. This lifter thing concerns me but I like that even my heavy-footed Camaro driving has better mileage than my 2019 V6 Traverse. Especially with the cost of 93 octane.

Is the simple fix just to program it out and lose the better highway mileage? Right now my average is 21mpg. What's the typical mileage on these without DOD? 14?

Originally Posted by MT-SS1LE

No where near that big of a difference. I started using a Range AFM disabler last year and the MPG difference is maybe 2 MPG highway.

Not much, my ‘16 V6 with AFM averaged ~21.7mpg (87 octane) and without ~20.3mpg (93 octane tuned)

Sorry to hear OP having to go through this, my car had the same failure before I owned it around 10k miles. They also only replaced the 8 on the failed bank.

No lifter issues since and right over 36k miles.

[Riverside2SS]

Originally Posted by m6-lt1

The L87 recall has to do with the bottom end, not the lifters. Lifters have been occasionally a problem for the LT1, L87, L86 and L83 (I think that’s what the 5.3 is called) so that is nothing new.

I do believe though that our engines should have been recalled as well since the bottom end of the LT1, L86 and I’m pretty sure the L87 are all the same exact parts. There has been a ton of SS 1LE failures in the Facebook group. There’s no way I’m keeping my car out of warranty.

Yes, thank you for the correction. Not an oiling issue but bad lifters. I bought it with 1950 miles and no issues up to this point. Wondering if i call dealership if they would deactivate AFM....um....probably not. i do drive quite often in manual mode (10 sped auto) so shifting at 5-6k rpm is a pretty regular thing