Brand new C8 Corvette self-destructed
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Heel & Toe
Joined: Sep 2020
Posts: 15
Likes: 8
From: Virginia Beach, Virginia
Brand new C8 Corvette self-destructed
Taking my first short distance road trip my brand new 2020 C8 with just 600 miles on it and still babying it in it’s break in period. Out of the blue doing 70 miles an hour in tour mode on I 95 in South Carolina, there was a BANG and sudden serious vibration that felt like I was an earthquake. The vibration was so bad I thought all four wheels were going to fall off. Called OnStar and they told me to take it to the nearest Chevy dealer 10 miles away. Now five days later I am told a valve spring broke, God knows how, and they are replacing all 16 valve springs at a small dealership in Lumberton, North Carolina. Now, you tell me how a month old, brand new Corvette with less than 600 miles on it breaks a valve spring? God knows what other damage was done, possibly a dropped valve, scored cylinder or a piston or totally trashed engine! And to think I waited a year for this car!!!
Last edited by Andrewminton; Dec 14, 2020 at 11:41 AM.
Popular Reply
Nov 9, 2020, 03:29 PM
Racer
Joined: Sep 2014
Posts: 498
Likes: 256
You apparently haven't been following the valve spring controversy very well.
Pro
Joined: Jul 2016
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From: Forsyth Illinois
Safety Car
Joined: Apr 2007
Posts: 4,546
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From: Southeast, WI
Taking my first short distance road trip my brand new 2020 C8 with just 600 miles on it and still babying it in it’s break in period. Out of the blue doing 70 miles an hour in tour mode on I 95 in South Carolina, there was a BANG and sudden serious vibration that felt like I was an earthquake. The vibration was so bad I thought all four wheels were going to fall off. Called OnStar and they told me to take it to the nearest Chevy dealer 10 miles away. Now five days later I am told a valve spring broke, God knows how, and they are replacing all 16 valve springs at a small dealership in Lumberton South Carolina. Now, you tell me how a month old, brand new Corvette with less than 600 miles on it breaks a valve spring? God knows what other damage was done, possibly a dropped valve, scored cylinder or a piston or totally trashed engine! And to think I waited a year for this car!!!
In the meantime, you will be fine. New spring or springs and you will have a fantastic car. I'm glad they are replacing all of them. Many have reported that they just replaced the broken one.
Edit; chromebumper guy post #2 above already gave you a link,
Last edited by speedlink; Nov 9, 2020 at 03:36 PM.
Banned Scam/Spammer
Joined: Mar 2005
Posts: 8,083
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From: Bonita Springs FL
Taking my first short distance road trip my brand new 2020 C8 with just 600 miles on it and still babying it in it’s break in period. Out of the blue doing 70 miles an hour in tour mode on I 95 in South Carolina, there was a BANG and sudden serious vibration that felt like I was an earthquake. The vibration was so bad I thought all four wheels were going to fall off. Called OnStar and they told me to take it to the nearest Chevy dealer 10 miles away. Now five days later I am told a valve spring broke, God knows how, and they are replacing all 16 valve springs at a small dealership in Lumberton South Carolina. Now, you tell me how a month old, brand new Corvette with less than 600 miles on it breaks a valve spring? God knows what other damage was done, possibly a dropped valve, scored cylinder or a piston or totally trashed engine! And to think I waited a year for this car!!!
Pro
Joined: Nov 2017
Posts: 713
Likes: 506
Taking my first short distance road trip my brand new 2020 C8 with just 600 miles on it and still babying it in it’s break in period. Out of the blue doing 70 miles an hour in tour mode on I 95 in South Carolina, there was a BANG and sudden serious vibration that felt like I was an earthquake. The vibration was so bad I thought all four wheels were going to fall off. Called OnStar and they told me to take it to the nearest Chevy dealer 10 miles away. Now five days later I am told a valve spring broke, God knows how, and they are replacing all 16 valve springs at a small dealership in Lumberton South Carolina. Now, you tell me how a month old, brand new Corvette with less than 600 miles on it breaks a valve spring? God knows what other damage was done, possibly a dropped valve, scored cylinder or a piston or totally trashed engine! And to think I waited a year for this car!!!
#PIP5752F: Service Engine Light Misfire Engine Noise With DTC P0300 P0106 P0506 - (Oct 28, 2020) Subject: Service Engine Light Misfire Engine Noise With DTC P0300 P0106 P0506CorrectionDuring inspection if you determine that the engine has a broken valve spring it will be necessary to perform a cylinder leakage test on the affected cylinder.
If no cylinder leakage is observed and the vehicle is built between June 1, 2020 to October 7, 2020:
P/N 12691120 - 6.2L L87, LT1, LT2, LT4Please add any pictures of the concern to the case that will help with the diagnostics.
Check for a damaged intake manifold runner for the cylinder with the concern.
00-06-01-026M: Engine Replacement After Severe Internal Engine Damage -Replace Intake Manifold
If you determine that engine has cylinder leakage it will be necessary to inspect further to determine the extent of the engine damage to determine correct repair required;
If no cylinder leakage is observed and the vehicle is built between June 1, 2020 to October 7, 2020:
- For engines with RPOs L82, L84 and L8T replace the affected valve spring, if the vehicle is built between June 1, 2020 to October 7, 2020.
- For 6.2L engines RPOs L87, LT1, LT4 and LT2 It will be necessary to replace all valve springs on both banks if the vehicle is built between June 1, 2020 to October 7, 2020.
P/N 12691120 - 6.2L L87, LT1, LT2, LT4Please add any pictures of the concern to the case that will help with the diagnostics.
Check for a damaged intake manifold runner for the cylinder with the concern.
00-06-01-026M: Engine Replacement After Severe Internal Engine Damage -Replace Intake Manifold
If you determine that engine has cylinder leakage it will be necessary to inspect further to determine the extent of the engine damage to determine correct repair required;
- For 6.2L engines RPOs L87, LT1, LT4 and LT2 that has engine damage please follow PIP5759 for engine restriction.
Last edited by Newdude; Nov 9, 2020 at 04:20 PM.
Drifting
Joined: Apr 2006
Posts: 1,449
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My car 2 day build was October 7 & 8. Now is the June 1, 2020 - October 7, 2020 window of production for the car or the engine? And if it is for the car, I may have made it by one day.
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Pro
Joined: Nov 2017
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Top of the first paragraph in the PI I quoted.
If no cylinder leakage is observed and the vehicle is built between June 1, 2020 to October 7, 2020
Race Director
Joined: Nov 2017
Posts: 12,747
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From: Prosper TX/Austin TX
2020 C6 of the Year Winner - Modified
Sorry this happened OP, as others have already stated, this is a known issue, among others here on the forum but doesn't seem to be getting out to new owners. I spoke with several C8 owners this weekend who were unaware of any of the reported issues or recalls on the vehicle thus far.
Drifting
Joined: Dec 2019
Posts: 1,306
Likes: 1,833
It seems like if a valve spring is going to fail related to this issue, it happens pretty quick. I had a 8/21 build date and have 2,200 miles on mine with no issues. Some of those miles have been beating the crap out of it and it's not even broken a sweat. I want to think I'm in the clear but who knows really.
Le Mans Master
Joined: Dec 1999
Posts: 6,516
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From: One Hour From Boston!
It seems like if a valve spring is going to fail related to this issue, it happens pretty quick. I had a 8/21 build date and have 2,200 miles on mine with no issues. Some of those miles have been beating the crap out of it and it's not even broken a sweat. I want to think I'm in the clear but who knows really.
Safety Car
Joined: Nov 2007
Posts: 3,882
Likes: 2,933
From: N.E. Suburb MN
Taking my first short distance road trip my brand new 2020 C8 with just 600 miles on it and still babying it in it’s break in period. Out of the blue doing 70 miles an hour in tour mode on I 95 in South Carolina, there was a BANG and sudden serious vibration that felt like I was an earthquake. The vibration was so bad I thought all four wheels were going to fall off. Called OnStar and they told me to take it to the nearest Chevy dealer 10 miles away. Now five days later I am told a valve spring broke, God knows how, and they are replacing all 16 valve springs at a small dealership in Lumberton South Carolina. Now, you tell me how a month old, brand new Corvette with less than 600 miles on it breaks a valve spring? God knows what other damage was done, possibly a dropped valve, scored cylinder or a piston or totally trashed engine! And to think I waited a year for this car!!!
Race Director
Joined: Aug 1999
Posts: 13,203
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From: Bluffton SC via Canton Oh
IDK you guys really like to bend over and accept this crap???? Hes tooling along at 70......... engine breaks and you all assume down the road there wont be a problem????? You'll be fine??? Easy to type, better to hope.
Each to their own but if I intended to keep my C8 long term..........which I don't I had one of these cars it would be gone in a heartbeat.
No one knows the long term damage these sprigs breaking causes.
Each to their own but if I intended to keep my C8 long term..........which I don't I had one of these cars it would be gone in a heartbeat.
No one knows the long term damage these sprigs breaking causes.
Team Owner
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IDK you guys really like to bend over and accept this crap???? Hes tooling along at 70......... engine breaks and you all assume down the road there wont be a problem????? You'll be fine??? Easy to type, better to hope.
Each to their own but if I intended to keep my C8 long term..........which I don't I had one of these cars it would be gone in a heartbeat.
No one knows the long term damage these sprigs breaking causes.
Each to their own but if I intended to keep my C8 long term..........which I don't I had one of these cars it would be gone in a heartbeat.
No one knows the long term damage these sprigs breaking causes.
Burning Brakes
Joined: Sep 2013
Posts: 901
Likes: 318
I’m sorry guys and I’m sure someone will set their hair on fire because I even mention it, but how can you comfortably drive these cars anywhere. Long trips would be a real crap shoot. Chevy needs to recall ALL these cars before someone gets hurt.
Instructor
Joined: Oct 2019
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I picked up my c8 a month ago 300 miles away. Needless to say I was terrified driving it home knowing there's a good possibility that I could be stranded on the side of the road due to the valve spring issue. My car was built on 9/4 which was in the time frame of the issue. Knowing it was an early failure I put 80 miles on it driving back roads not far from my dealer then drove it home just fine. A week and a half later I took it on a 2100 mile road trip and all was well. Best car I have ever owned or even driven!
