It is 2016 Z51 with 12,340 miles. Been in shop multiple times for repair.

 

And the crankshaft end play was 14 thousandths 156 miles ago. Now it has 25 thousandths.

 

I don't understand how any A8 malfunction caused the electrical system to fail or why either of those would make the engine grenade. That is basically what you are saying, right?

 

That's horrible man.
Hopefully you have the Lemon Law in your state. Sounds like that car will never be the same/correct. Good luck!!

I bet that in the process of getting repaired one time, one or some of the electrical wiring got crossed up or short circuited. Just a guess here.

 

Trying to start it with the engine seizing up probably put too much load on the system. Post #1 did say something about the starter smoking.

 

I was wondering the same thing; why/how does the current issue seem to be blamed on the A8.

 

A month disassembled? I would NOT take that car back.
The odds of everything going back exactly where it should....frighten me to ponder.

Why oh why wouldn't you have "lemoned" that car???

 

You're living a C7 vette owners worst nightmare. GM are you watching what one of your customers who purchased his vehicle in good faith is having to go through? Can you find an excuse to reach out and assist in this one? Come on Christmas will be here soon.....

 

Any smart buyer would do a strenuous amount of research before buying a used Corvette with the A8. This would make a car such as this difficult to sell at market value.
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Agreed, but this car not only has had A8 issues but electrical and a MAJOR engine issue. Owner will most likely have difficulty selling it at any price, must less market value.
GM needs to take the loss on this C7, not the owner.

 

With all the work done to replace the flexplate and TC, there's a good chance something happened to cause the problem with the rear main bearing. So, it probably wouldn't have happened if the A8 wasn't such a problem.

 

Every time I hear the rear bearing going out on an automatic Corvette I assume torque tube alignment issue. I think it loads up the bearing and causes an eventual failure. It should be avoidable if they check it after they install it though, I'd think.

 

Good grief! I have seen pics of Humvees hit by IEDs that looked better.

One point I'm confused about. No where did you actually mentioned that the major failure that resulted in the dissection of you car was related to the transmission. In fact the ONLY thing not pulled from the car is the transmission.

That said, so sorry for your troubles.

 

I too would be going after a buy back and would advise a meeting with the regional VP of Chevrolet to start the ball rolling. I would also consider your retaining Counsel if you are not feeling comfortable about a meeting.

I recently purchased a 2018 Z06 after selling my 2014 Z51 with very low mileage. I researched on this forum the Z06 engines and potential for problems. A question was asked recently about how the LT1 engines differed from the LT4. The LT4 has many differences starting with the way the heads are physically cast, the pistons are cast, the rods differ and the crank is different. The reason you don't hear too much about LT4 problems is because there are far less units out in the marketplace. One problem that did strike me in that conversation dealt with the main bearing caps loosening which I was not aware of. Let's see, the main caps (even with six bolts each) cause the crank to move (thousandths) putting pressure on the torque tube (alignment) putting pressure on the transmission, etc. thus causing many wear points and places for miss-alignment until something gives.

In addition, this past Friday I had my exhaust system changed out to B&B Bullets and found that my 2018 was void of AFM valves. I got into a discussion (on the Z06 threads) and was told that this was mainly due to these valves getting way too hot and malfunctioning moreso on Z06's and were eliminated but that the engine still would go into V4 operation under light loading. I drove it some 60 miles Saturday with my DIC set to watching the V8/V4 setting and never once saw V4 operation. I was on many streets as well as in cruise on the highway at 70 mph.

Sorry for the long wind, but could the AFM system be a trouble spot and possibly exerting way too much pressure on the crankshaft going from V8 to V4 and back?? That alone might be the culprit loosening the mains...I'll leave that question to the Chevrolet engine engineers to look at. In the meantime, start ordering those Range Technology units and keeping the engines in V8 operation only...just kidding but a thought.

Back to the OP, good luck with the resolution of your vehicle being spread out all over the floor at a dealership.
Don't give up on Vettes just yet. My Z06 is number 8, I haven't.

 

I would not want the car back after that, it definitely would not be the same.

Good luck with what you have going on.

 

Here's reality. The majority of car buyers never research a car's history let alone do extensive research.

Case in point, I was at a Jeep dealer today saw a guy who was buying a 2014 Jeep Cherokee with the nine speed transmission. You thought the A8 is unreliable the nine speed is a complete disaster yet there he goes buying the worst transmission ever made. And all he had to do was some basic internet research and he would have easily found out about that transmission.

The fact is cars are bought on emotion not research.

 

Good God!! What a disaster! So empathetic for you in getting a fix or Lemon Lawing it!! Geeeeeeesh!#!!&*#÷+%×!

 

If, he bought it new from a Texas Chevy dealer, he's in business. Texas Lemon Law is simple, straightforward, and easy to execute with the State. Provided he has his paper trail in perfect order, he's got a slamdunk in residual value applied to a new Chevy purchase. If he doesn't have his paperwork in order, he may have trouble documenting it. The Chevrolet dealer may not be willing to provide the past, or even the present proper documentation for him.

 

Forget trying to get GM to do anything on their own, go through the BBB and you will get action if you have a case and it sure looks like U do. Look in your little warranty booklet and access the BBB web site and plug and chug your info in. A friend in NC just had GM replace his stingray and they didn't do the first repair, he had the WARBLE issue and told them he wanted another car and got it last week. GM bought my car back after going through BBB last yr. Gm and your dealer will string you along but if you go BBB route you will bet results if you have a case. Good luck

 

I assume the OP had a trans or TC problem before or at 14,000 miles.
They replaced the part that required the torque tube to be removed.
This is when the second item started to be damaged-the engine.
They did not re-install the torque tube correctly and cause the bearing issues. They will not admit to this.
I also assume this is an early production 2016. GM revised and issued the fourth TC in Nov. of 16.
OP can you confirm any of this?

Note if the bearings on the crank are gone there are particles in the motor and abnormal wear exist.
Do whatever you need to do to get out from under this car now!