[m6-lt1]

Originally Posted by arpad_m

What isn't an option? He can plug in a Range device and get rid of AFM that way until his new warranty expires, then do anything he wants to.

1) since when do 6 speed guys need to plug that in? That is news to me if that’s the case now?

2) I am fairly certain KingLt1’s comment that he quoted was in regards to PHYSICALLY deleting the afm lifters from the engine which a dealer will absolutely not do. This I know manual drivers can do since we all have the lifters.

[KingLT1]

Originally Posted by m6-lt1

1) since when do 6 speed guys need to plug that in? That is news to me if that’s the case now?

2) I am fairly certain KingLt1’s comment that he quoted was in regards to PHYSICALLY deleting the afm lifters from the engine which a dealer will absolutely not do. This I know manual drivers can do since we all have the lifters.

For clarification I meant to have it turned it off in the tune. Most AFM engine failures are from AFM being active. All LT1 and LT4 engines have AFM hardware in the engine regardless of the transmission, but again most failures happen with engines that have it active.

But you are correct since the OP has a M6(I missed that part), AFM is already turned off in the tune.

The best solution would be to delete AFM hardware all together, but the dealership likely won't do that as you mentioned.

[v8fanboy]

Do you guy's think GM will investigate what went wrong with the blown up motor? I know the dealer does not care anymore once it's an approved warranty fix. I would just be curious to know "what exactly" went wrong with it despite babying this vehicle...Can I call GM directly to share these findings with me? Or do they just scrap these motors away?

[arpad_m]

Originally Posted by v8fanboy

Do you guy's think GM will investigate what went wrong with the blown up motor? I know the dealer does not care anymore once it's an approved warranty fix. I would just be curious to know "what exactly" went wrong with it despite babying this vehicle...Can I call GM directly to share these findings with me? Or do they just scrap these motors away?

They used to do teardowns, but even if that takes place, they will share absolutely 0 information about any manufacturing flaw/event/mistake with you, the customer who may then turn around and sue them for whatever.

[N Camarolina]

Mine blew in 2022. They only tore the engine down enough to verify the need for replacement. So you might hear about what they found was destroyed (the first critical part they could observe), but not necessarily any trace to the cause. I know that I had one or more spun rod bearings and nothing punched out of the block.

I too was interested in the root cause so that I might be able to do something to better protect the next engine. I have a PDR so was able to look at the data (it blew during a track event). Might possibly have been an oil pump failure, but the oil temps started rising (ultimately reaching +50F beyond the normal track temp) a full minute before there was any significant noticeable drop in oil pressure. Guess it will remain a mystery.

[MyNameIs]

Originally Posted by Gen6cyl

It is happening to cars without afm. Hope the lgx is not as bad. I am a 71 k miles no problem other than some oil in intake tube. I think it happens over 3k miles past oil change.I have been doing 5k or less changes with super tech. Two days ago I changed with Penn platinum with under 4 k miles. Will start doing that and see how it goes.

His car is a manual with no AFM.

[MyNameIs]

Originally Posted by v8fanboy

Do you guy's think GM will investigate what went wrong with the blown up motor? I know the dealer does not care anymore once it's an approved warranty fix. I would just be curious to know "what exactly" went wrong with it despite babying this vehicle...Can I call GM directly to share these findings with me? Or do they just scrap these motors away?

Usually GM wants the engine back to do an autopsy to find the cause. May not even be an engineering issue but a failed part from a supplier. What oil were you using?

[v8fanboy]

Originally Posted by MyNameIs

Usually GM wants the engine back to do an autopsy to find the cause. May not even be an engineering issue but a failed part from a supplier. What oil were you using?

Here you go.

[JSH]

Mine blew at 14k

[v8fanboy]

Originally Posted by JSH

Mine blew at 14k

how many miles do you have now? did they ever tell you the cause? are you gonna keep the car or sell it as soon as warranty expires?

[JSH]

Originally Posted by v8fanboy

how many miles do you have now? did they ever tell you the cause? are you gonna keep the car or sell it as soon as warranty expires?

The cause was my hot-rodding it. I bought a new one from LME.

[v8fanboy]

I believe the same motor is being used in the C7's? I'm going to do some research and see in their forums if engines going kaboom is as common as the 6th gens....if it's not, whats working against us?

[m6-lt1]

Originally Posted by v8fanboy

I believe the same motor is being used in the C7's? I'm going to do some research and see in their forums if engines going kaboom is as common as the 6th gens....if it's not, whats working against us?

I’ll admit I’ve seen a little too many newer LT1’s popping than I’d like to see but I think the biggest thing we have against us is being on these forums and FB pages. No one is going to post when their motors AREN’T blowing up. So when people post that their engine blew up it will seem like it happens more often than it actually does. Remember there are thousands of folks with these cars whose engines haven’t blown up.

[TheEnthusiast]

AFM is the main reason to buy a manual with these cars. Since OP has a manual I don't think AFM is the culprit since its basically disabled.

Who'd a thunk it, you tun off 4 cylinders to save gas on a v8 and it has side effects.
I thunk it, I thunk it when I first heard about it.