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Old Dec 5, 2025 | 03:41 PM
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Default Transmission problems

My car is a 2015 stingray with 95000 miles. The transmission is jerking and shuttering. I have had the triple flush two times. Both helped. It is now in the shop. It needs Transmission replaced and converter overhaul. $17000.00. I am not doing it.

Thanks for all the comments. I will find a way to repair or replace this transmission. I agree with all your suggestions. Looking back I have had many miles of fun with my C7. That is the important thing. I will let you know what I decide to do.


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Last edited by Bumble-C7; Dec 10, 2025 at 10:04 AM. Reason: thanking members for good suggestions.
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Old Dec 5, 2025 | 04:10 PM
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Is this from a dealer? Find a good tranny shop and save thousands...
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Old Dec 5, 2025 | 05:25 PM
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Sounds like a dealer price. I would check with an independent transmission specialty shop. They might charge less than $10,000–maybe $7,000. The 2015 with 95,000 miles and a failed transmission and torque tube might sell for $20,000, depending on its condition and trim level, I am guessing. Someone who can do the work might buy the car. I had a used transmission put in a Chevy Silverado for $3,500.
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Old Dec 5, 2025 | 07:30 PM
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Thank you for the suggestion. I am going to look for a transmission shop. I will not pay that price for another transmission that will probably fail.
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Old Dec 5, 2025 | 07:55 PM
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Who are you? Do you race the car? I would definitely check if the fluid is still full. You said another trans, is this the second failure?
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Old Dec 6, 2025 | 12:49 PM
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Old Dec 6, 2025 | 02:26 PM
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Originally Posted by Bumble-C7
My car is a 2015 stingray with 95000 miles. The transmission is jerking and shuttering. I have had the triple flush two times. Both helped. It is now in the shop. It needs Transmission replaced and converter overhaul. $17000.00. I am not doing it.
AFAIK, the triple flush was to remove as much of the old fluid BEFORE it can cause too much harm. If you did the triple flush with the 3 pan drop (Should be over $1K) and the problem returns, I don't see why it is necessary to do it again. If that "cures" the problem, maybe the transmission is already too far gone. Case in point. I had a 3rd Gen Camaro that had a transmission slippage problem. We dropped the pan and the mechanic said "Well, we can redo the trans or just fill it up with fresh fluid and add some snake oil and that's all we can do.". I understood it to be a "Hail Mary" and later on, it would fail some months down the road. Maybe that is your case. By the time your first triple flush was done, assuming it was and not just a pan drop, maybe it was already on it's way out and the 2nd one just refreshed the fluid. Not sure why the tech, if it was the tech and not the appointment clerk, recommended doing it again if he knew it was already done.

While I am often entertaining a 2nd opinion, at this point, I am not sure if anything would help. So before I listen to $17000 and vague words, I would ask for an ITEMIZED QUOTE and take that around to compare. It's been my experience that sometimes, shops lure people in with a low dollar figure but cut out some stuff. Know of someone who got a screaming price on a paint job. Too bad that was all it was. "Spray and Pray". A year later, it started peeling. We took off a sheet and found that the new paint was sticking to the old paint. Yep. Wasn't even a "scuff and shoot". It was a cash deal and well, the owner of the shop doesn't remember the victim. "Perhaps if you can show me a receipt we can help?". I only compare itemized estimates with itemized estimates. I also lop off the most expensive and the cheapest and look at the mid range.
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Old Dec 9, 2025 | 07:33 PM
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Sounds like it is time to trade in on a later lower mileage C7 or a C8.

It's unfortunate, but I'm convinced that my 2015 Stingray and many other C7s were traded in due to early automatic transmission shudder problems and the leaking fuel tank flange defect, both issues recognized in technical service bulletins. I had to have both problems resolved after my purchase.

At 95,000 miles, it would be hard to justify the retail price of a transmission replacement at a dealership.


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Old Dec 9, 2025 | 09:01 PM
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Originally Posted by 14point5
Sounds like it is time to trade in on a later lower mileage C7 or a C8.

It's unfortunate, but I'm convinced that my 2015 Stingray and many other C7s were traded in due to early automatic transmission shudder problems and the leaking fuel tank flange defect, both issues recognized in technical service bulletins. I had to have both problems resolved after my purchase.

At 95,000 miles, it would be hard to justify the retail price of a transmission replacement at a dealership.
If something happened to my C7 tomorrow and I had to stick with Corvettes, definitely a C8. NFW would I either go backwards or stay the same for a replacement regardless of how low mileage it is.

I'm not sure so many were. The transmission fluid picks up moisture so it takes a bit, depending on humidity to show it's ugly head, I would imagine.

At any place, it would be a hard hit at 95K. Still, what to do? You can't get much for it without a working transmission.
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Old Dec 10, 2025 | 10:08 AM
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No I do not race. I will check the fluid level. Great idea, This is the original transmission. Not the second failure. The triple flush of transmission fluid will fix the problem for a short time. But the problem will com back.
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Old Dec 10, 2025 | 11:01 AM
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Originally Posted by Bumble-C7
No I do not race. I will check the fluid level. Great idea, This is the original transmission. Not the second failure. The triple flush of transmission fluid will fix the problem for a short time. But the problem will com back.
IDK. Many have had it go away after the triple flush, assuming they got the real deal and not the cheap pan drop. My guess is that if you get it before it goes too far, you are fine. I dumped it before it ever got any hit of shudder.
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Old Dec 12, 2025 | 09:37 PM
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I have a 05, and my transmission is cooked, and they only used that transmission for 1 year automatic, and gave prices like yours.

I called numerous transmission shop who can rebuild it moderate price, with good warranty and be surprise of the prices I got, lot cheaper than the dealership but still pricy.

I asked friends, who recommended some good shops locally.

So my suggestion start shopping?
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Old Dec 13, 2025 | 12:40 AM
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I would be looking for a good independent shop to see what they would charge for the transmission work. $17K is one heck of a lot of money - probably greater than 50% or more of the car's value.
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Old Dec 13, 2025 | 10:03 AM
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A more basic question is: Can General Motors actually build a reliable transmission.

I bought a brand new Firebird decades ago and the auto transmission disintegrated with only 2,000 miles on the clock and left me stranded on the interstate. I swore I would never buy another GM product.

Then I got Corvette fever and bought a C4 with a manual transmission. That was a good car. So I took a chance and bought a used Silverado. A guy approached me at a gas station and asked about my transmission. I said it was fine. He said his GMC truck, which he bought new, was on its second transmission. A month later my Silverado transmission had to be replaced, and it had active fuel management. I immediately traded the Silverado for a used Tundra.

Some of the C8s have had trouble after just a few hundred miles.

I had to put new transmissions in a Dodge Caravan and a Nissan truck but that was after 250,000 miles.
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