NHTSA 6.2L Motor Failure Inquiry

Yeah kinda ironic that just after being accused of playing the victim, two more blow up…

Tick tock…
Yeah, it's not even bad on this forum. If you wanna know how bad it really is, get on Reddit cause it's one after the other Chevrolet, GMC, Cadillac, 5.3s, 6.2s. There's actually reason there's a motor shortage and it ain't cause there stacked up on the side of the road, it's cause there stacked at the dealer storage lot waiting.
 
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Dave's Auto had this video posted a few weeks ago. Some interesting images of the carnage. He isn't seeing a bearing problem, but possible a piston problem.

I see some GM techs in the comments saying it might be piston casting/wrist pin clips like the video shows, bad bearings, poor oiling, bad machining in blocks causing misaligned con rods, and left over casting materials like sand. No real consensus and all are plausible.

There are examples cited with 1-5 miles.......WTF.

 
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Dave's Auto had this video posted a few weeks ago. Some interesting images of the carnage. I see some GM techs in the comments saying it might be piston casting/wrist pin clips like the video shows, bad bearings, poor oiling, bad machining in blocks causing misaligned con rods, and left over casting materials like sand.

There are examples cited with 1-5 miles.......WTF.

Love this guy...wish his shop was closer to home!
 
Love this guy...wish his shop was closer to home!
Yeah, he's got some great videos and a hell of a shop and it highlights problems that can occur with every motor out there.

It takes some time to wade through the comments, but the techs have some good observations. There was one tech that said he's done 20 and another that said he does one every other week.
 
Yeah, he's got some great videos and a hell of a shop and it highlights problems that can occur with every motor out there.

It takes some time to wade through the comments, but the techs have some good observations. There was one tech that said he's done 20 and another that said he does one every other week.
I've been watching his videos for a very long time. No BS and straight shooter. Not many high quality shops like him out there anymore 🙁
 
Dave's Auto had this video posted a few weeks ago. Some interesting images of the carnage. He isn't seeing a beating problem, but possible a piston problem.

I see some GM techs in the comments saying it might be piston casting/wrist pin clips like the video shows, bad bearings, poor oiling, bad machining in blocks causing misaligned con rods, and left over casting materials like sand. No real consensus and all are plausible.

There are examples cited with 1-5 miles.......WTF.

I talked a service manager at dealer when it got towed there I ask him what it can be with so many units failing. He said gm knows that the main bearings are thicker then they should and causing them to fail.
 
Dave's Auto had this video posted a few weeks ago. Some interesting images of the carnage. He isn't seeing a beating problem, but possible a piston problem.

I see some GM techs in the comments saying it might be piston casting/wrist pin clips like the video shows, bad bearings, poor oiling, bad machining in blocks causing misaligned con rods, and left over casting materials like sand. No real consensus and all are plausible.

There are examples cited with 1-5 miles.......WTF.

Maybe all the above to some degree.
 
I talked a service manager at dealer when it got towed there I ask him what it can be with so many units failing. He said gm knows that the main bearings are thicker then they should and causing them to fail.
Of course they know and fail to fix it properly. Let's just put new motors in trucks that will fail the same as the last...great business practice and instills a high level of confidence 😥
 
I've said this before, there may be more than one issue, so they've decided it cheaper to fix them along the way than recall. I think they bought the NHSTA officials a new Cadillac Escalade to look the other way, So long as they don't kill anyone. Once you kill a MFer, then they gotta act like they care.

6er, where you at man, where you at?
 
this thread couldn't have unfolded any better. someone raising hell about people bitching because of failing engines. within a day of posting that, two more posters have their engines take a shit, with one of them being the fifth engine in line for replacement at their dealer. wonder what the count is for posters on this forum only that have had a 6.2 implode. well over a dozen, i'm sure.

6er be like . . .

200w.gif
 
Well I called gm customer service they were going to call the dealer to get a bit more info as well to see if they can prioritize an engine for me. They said they will call next week with an update.
 
Dave's Auto had this video posted a few weeks ago. Some interesting images of the carnage. He isn't seeing a beating problem, but possible a piston problem.

I see some GM techs in the comments saying it might be piston casting/wrist pin clips like the video shows, bad bearings, poor oiling, bad machining in blocks causing misaligned con rods, and left over casting materials like sand. No real consensus and all are plausible.

There are examples cited with 1-5 miles.......WTF.

They just as well say the engines are made in Pakistan
 
I've said this before, there may be more than one issue, so they've decided it cheaper to fix them along the way than recall. I think they bought the NHSTA officials a new Cadillac Escalade to look the other way, So long as they don't kill anyone. Once you kill a MFer, then they gotta act like they care.

6er, where you at man, where you at?
Bet they don't have engines in them. Just a big hole in the floor boards for all the passenger to Flintstone it . Gas mileage would be great. Better than a EV
 
The manager of one of our local dealerships had the motor in his '22 ZR2 go out at 55K. His kid and my kid are friends so we talk every so often since I have a '24. His issue was supposedly a mismatched piston/bore. He said that he has only seen the lifter issue on 2 of the 6.2 motors, and assumed that his was as well. His wait was about 75 days (but of course he had a new TB to roll around in while he waited). :rolleyes:
 
The manager of one of our local dealerships had the motor in his '22 ZR2 go out at 55K. His kid and my kid are friends so we talk every so often since I have a '24. His issue was supposedly a mismatched piston/bore. He said that he has only seen the lifter issue on 2 of the 6.2 motors, and assumed that his was as well. His wait was about 75 days (but of course he had a new TB to roll around in while he waited). :rolleyes:
That's mismatched piston and cylinder bore and con rod alignment is discussed in the comments from techs on that video from a Dave's Auto. I think we're finally getting some better information.

Would be nice to see if there is a correlation to wear metals in oil analysis before failure. I don't think enough people are doing the oil analysis to find out. I've done several on my 6.2L motors, all normal, so it'll be interesting to see if one of them gets smoked.
 
Well, that Dave's Auto post is the first information I've seen that tracks with my truck's issue. I'm still pissed that a barely year old truck with 16k miles died at idle. It was broken in properly, serviced when it was supposed to be by the dealer (most recent dealer service was 6 days before it died), and babied.

Talked to the service manager earlier this week. Looks like a top end rebuild instead of a new engine. From what I was told, there was a piston failure that will require replacing two pistons and a bunch of valves (looks like valve parts were found in the cylinder.

Now I need some advice... I told the dealer that regardless of what GM told them (GM told the dealer to rebuild, not replace the engine), I didn't pay all that money last year (cash, not financed) for a rebuilt engine. I paid for a new engine and I want it replaced, and i want the powertrain warranty reset to zero. The service manager said she would insist on that too, but they could only do what GM said was covered under warranty, and that's a rebuild. She gave me the number and I took it up with GM, and told them the same thing. Waiting to hear back now. Should I continue to insist on a new engine, or is a rebuild just as good at this point?
 
Well, that Dave's Auto post is the first information I've seen that tracks with my truck's issue. I'm still pissed that a barely year old truck with 16k miles died at idle. It was broken in properly, serviced when it was supposed to be by the dealer (most recent dealer service was 6 days before it died), and babied.

Talked to the service manager earlier this week. Looks like a top end rebuild instead of a new engine. From what I was told, there was a piston failure that will require replacing two pistons and a bunch of valves (looks like valve parts were found in the cylinder.

Now I need some advice... I told the dealer that regardless of what GM told them (GM told the dealer to rebuild, not replace the engine), I didn't pay all that money last year (cash, not financed) for a rebuilt engine. I paid for a new engine and I want it replaced, and i want the powertrain warranty reset to zero. The service manager said she would insist on that too, but they could only do what GM said was covered under warranty, and that's a rebuild. She gave me the number and I took it up with GM, and told them the same thing. Waiting to hear back now. Should I continue to insist on a new engine, or is a rebuild just as good at this point?
No fucking way I'm settling for a rebuilt motor. Call GM customer service and get up in their asses. Everyone else is getting a new motor. Hire a lawyer if you have too. Get paid for all your downtime. And tell them you want another $2k for putting out a shitty product.

Then tell those MFers I'm about to get to take a bite out of their asses for not replacing my shitty tonneau cover that I have to make a second dealer visit to "confirm warranty coverage".

I told my service advisor if thats how they wanted to do it, that I would be dropping it off with an extensive list of craptacular GM bullshit that needs repair, including repainting the hood. I'm gonna be into these crooks for $10k of warranty work before I'm done with their asses now. I'm gonna make good and gawd damned sure they don't make a nickel on this truck.

They want to play fuck around, well there's nobody better at it than me!
 
Well, that Dave's Auto post is the first information I've seen that tracks with my truck's issue. I'm still pissed that a barely year old truck with 16k miles died at idle. It was broken in properly, serviced when it was supposed to be by the dealer (most recent dealer service was 6 days before it died), and babied.

Talked to the service manager earlier this week. Looks like a top end rebuild instead of a new engine. From what I was told, there was a piston failure that will require replacing two pistons and a bunch of valves (looks like valve parts were found in the cylinder.

Now I need some advice... I told the dealer that regardless of what GM told them (GM told the dealer to rebuild, not replace the engine), I didn't pay all that money last year (cash, not financed) for a rebuilt engine. I paid for a new engine and I want it replaced, and i want the powertrain warranty reset to zero. The service manager said she would insist on that too, but they could only do what GM said was covered under warranty, and that's a rebuild. She gave me the number and I took it up with GM, and told them the same thing. Waiting to hear back now. Should I continue to insist on a new engine, or is a rebuild just as good at this point?
Unless you or the dealer can prove that the short block is damaged, you're fighting a losing battle with GM Corporate.
 
Unless you or the dealer can prove that the short block is damaged, you're fighting a losing battle with GM Corporate.
^^^This, They do a cost analysis on every warranty claim. If it can be rebuilt and its cheaper, this is the route you'll get.
 
^^^This, They do a cost analysis on every warranty claim. If it can be rebuilt and its cheaper, this is the route you'll get.
My cost analysis includes lawyer fees/downtime and if my state laws favor my position, then they can shove their analysis right up their collective fucking asses! They'll be begging to give me a new motor!
 
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