LT6 engine failures/problems





Unfortunately, my 24 Z06 just blew up at 30 days of ownership and 829 miles after being cautiously broken in. I was 240 miles from home and cruising at around 40mph in 4th when it happened without any warning! I was stranded in a puddle of oil with a chewed up intake valve and shiny little pieces of engine block to stare at! Just unfrekkinbelievable!
Got Onstar at least To send a tow truck, but the driver had to go back because he did not have the proper wheel dollies. And then we had a hell of a time getting it onto the flatbed since the wheel Dolly's were slightly too wide for the flat bed. A real nightmare story.
Next I had to get it towed to a certified Corvette Dealer in the area which turned out to be a very small rural dealer with virtually no Z06 experience. I was told to immediately contact GM customer care and open up a case file. GM tech has confirmed a total failure of the left cylinder head involving at least 3 valves, but they haven't torn it down yet. And since then I have asked if I can have the vehicle repurchased or replaced but I'm told not until the California lemon law applies. The engine and parts on backorder without any sort of eta plus I haven't authorized repairs yet until I find out if GM will tow it to a local dealer or it will cost me out of pocket in case it gets repaired in less than 30 days which I doubt is possible, but who really knows?
So my dilemma is to try and get it moved to an experienced/preferred local dealer so I can monitor repairs closely and in case they fix it in less than 30 days and I am stuck with it? Otherwise after 30 days I will hopefully be making 🍋 ade and get all of my investment/add ons back so I can start all over....makes me 😫 having to contemplate this inexcusable situation that GM puts it's customer in‼️
6,500 miles. Broken in exactly as GM prescribed, first service at 2,600 miles last November. 3 HPDE weekends this spring. Was hoping mine had been built late enough to avoid the front cover RTV TSB, but guess not. Car was built 8/11/23 a few weeks after the TSB, but I'd guess my engine was done before they changed the process.





Unfortunately, my 24 Z06 just blew up at 30 days of ownership and 829 miles after being cautiously broken in. I was 240 miles from home and cruising at around 40mph in 4th when it happened without any warning! I was stranded in a puddle of oil with a chewed up intake valve and shiny little pieces of engine block to stare at! Just unfrekkinbelievable!
Got Onstar at least To send a tow truck, but the driver had to go back because he did not have the proper wheel dollies. And then we had a hell of a time getting it onto the flatbed since the wheel Dolly's were slightly too wide for the flat bed. A real nightmare story.
Next I had to get it towed to a certified Corvette Dealer in the area which turned out to be a very small rural dealer with virtually no Z06 experience. I was told to immediately contact GM customer care and open up a case file. GM tech has confirmed a total failure of the left cylinder head involving at least 3 valves, but they haven't torn it down yet. And since then I have asked if I can have the vehicle repurchased or replaced but I'm told not until the California lemon law applies. The engine and parts on backorder without any sort of eta plus I haven't authorized repairs yet until I find out if GM will tow it to a local dealer or it will cost me out of pocket in case it gets repaired in less than 30 days which I doubt is possible, but who really knows?
So my dilemma is to try and get it moved to an experienced/preferred local dealer so I can monitor repairs closely and in case they fix it in less than 30 days and I am stuck with it? Otherwise after 30 days I will hopefully be making 🍋 ade and get all of my investment/add ons back so I can start all over....makes me 😫 having to contemplate this inexcusable situation that GM puts it's customer in‼️
Perhaps I read that wrong when someone mentioned that here a few weeks ago.
...and the dealer only has one set of lift equipment to pull motors out of the Z. There's another car waiting for parts in front of me.
Yay, Here we go.
The Best of Corvette for Corvette Enthusiasts
Unfortunately, my 24 Z06 just blew up at 30 days of ownership and 829 miles after being cautiously broken in. I was 240 miles from home and cruising at around 40mph in 4th when it happened without any warning! I was stranded in a puddle of oil with a chewed up intake valve and shiny little pieces of engine block to stare at! Just unfrekkinbelievable!
Got Onstar at least To send a tow truck, but the driver had to go back because he did not have the proper wheel dollies. And then we had a hell of a time getting it onto the flatbed since the wheel Dolly's were slightly too wide for the flat bed. A real nightmare story.
Next I had to get it towed to a certified Corvette Dealer in the area which turned out to be a very small rural dealer with virtually no Z06 experience. I was told to immediately contact GM customer care and open up a case file. GM tech has confirmed a total failure of the left cylinder head involving at least 3 valves, but they haven't torn it down yet. And since then I have asked if I can have the vehicle repurchased or replaced but I'm told not until the California lemon law applies. The engine and parts on backorder without any sort of eta plus I haven't authorized repairs yet until I find out if GM will tow it to a local dealer or it will cost me out of pocket in case it gets repaired in less than 30 days which I doubt is possible, but who really knows?
So my dilemma is to try and get it moved to an experienced/preferred local dealer so I can monitor repairs closely and in case they fix it in less than 30 days and I am stuck with it? Otherwise after 30 days I will hopefully be making 🍋 ade and get all of my investment/add ons back so I can start all over....makes me 😫 having to contemplate this inexcusable situation that GM puts it's customer in‼️
I also learned after the lemon law is triggered and the repurchase agreement is being processed, it will take around 30 days for Chevrolet to approve the repurchase, after which a replacement can be ordered. This is where I am stuck now! Trying to confirm if I will get a "special allocation" which will let me order the vehicle immediately at that time? The Dealership it's at has NOT gotten any Z06 allocations this year, so I won't be able to use one of theirs anyways! I have asked Chevrolet if I can personally "chase down" an allocation on my own and get an order submitted, which they can simply "tag" later and attach it to my case, like they did with the Chevy Bolt situation? I am waiting patiently for their answer now, so I can hopefully save a few weeks or more later. They initially said I could do it at any dealer that agreed to "host" both transactions, but recently recanted and said the repairing dealer is "usually" considered the "host" dealer for the repurchase & replacement process.
It could take months at this time for a replacement, so I reminded Chevrolet Customer Care, their goal AGAIN was to get me into another Z06 AZAP!
Stay tuned hopefully for something next more uplifting

When this thread got merged into existence it sort of made sense because there was maybe 1000 built so far.
Seriously, the logistics and procedures involved are mind boggling trying to understand and set one's expectations! I have explained 3 times now how a Corvette/Z06 allocation works and I'm still not sure they understand how long it will take to get a replacement, and why I am so pushy looking for the best option to save some precious time?! Still waiting patiently 
So, after they agreed to honor your WA lemon law, how long did it take the "Repurchase Rep" to complete their review and reach an agreement with you and finally authorize the replacement order via "special allocation"? I was told by my Service Advisor, that the repurchase process can take as long as the repair process which suggests around 30 days or so? I was told next Friday, 09/27 they're supposed to start the repurchase process, so I'm not sure I could find a local allocation any sooner than that? At least, your giving me some hope!

BTW - I found out today the engine is still on backorder with no ETA
At this rate makes me wonder if I will ever get my repaired Z06 back before a new one can be ordered and received
In WA, you can prevent some of those delays by filing a formal LL claim with the WA AG which starts the clock for them to settle before arbitration, and that settlement should include a time frame for the replacement. Not sure about any other states but sadly I’ve been looking into WA LL a lot lately.
Edit: Took about 3 months before I submitted my new build from the first LL replacement call.
In WA, you can prevent some of those delays by filing a formal LL claim with the WA AG which starts the clock for them to settle before arbitration, and that settlement should include a time frame for the replacement. Not sure about any other states but sadly I’ve been looking into WA LL a lot lately.
Edit: Took about 3 months before I submitted my new build from the first LL replacement call.
So, my service advisor says engine still on backorder, no eta,...But...Chevy Cust Srvc Rep says engine was delivered to dealer? Service Rep still cant confirm it's there? It's all mute point anyway, because the oil-tank is still on back-order....what a freaking joke, that the plastic oil tank could hold up everything!
I'm dead sure I will have major anxiety of being stranded again, if/when they tell me I have to pick up that repaired Z06! I will have to drive 240 miles to get home and pray that I make it without episode. I am thinking I will probably just park it until the replacement is ready. I don't think I will be interested in breaking it in "again" just to have to give it back to GM. It's really Sad that such a Beautiful Dream Car will end up this way!! It will be a painfully long 2-3 months since around/after the Holidays until I will finally be able to "Move On" so to speak. Time has never gone sooooooo SLOW !!!!
Got my car back, ticking is 90% gone! Parkway Chevrolet did great! Cheers to them.














