C8 problems
Racer
Joined: May 2008
Posts: 399
Likes: 199
I had 2016 C7 for 60K miles non-Z51 - traded in on 2023 C8 HTC Z51
The 2023 C8 tire noise (have 14K miles now) started to get louder around ~10K miles.
And it definitely seems louder than my C7 ever did.
Obviously different car/non-Z51/Z51 and different tires, but still surprising.
I've heard that run flat tires tend to get louder as they age but on the C8 it definitely seems louder than my previous C7.
Unclear how much Z51 would contribute here (if any) to straight continuous driving tire noise.
The 2023 C8 tire noise (have 14K miles now) started to get louder around ~10K miles.
And it definitely seems louder than my C7 ever did.
Obviously different car/non-Z51/Z51 and different tires, but still surprising.
I've heard that run flat tires tend to get louder as they age but on the C8 it definitely seems louder than my previous C7.
Unclear how much Z51 would contribute here (if any) to straight continuous driving tire noise.
Le Mans Master
Joined: Sep 2017
Posts: 5,767
Likes: 2,967
From: Rural NW Georgia. GO DAWGS!
2024 C8 of the Year Finalist - Unmodified
Race Director
Joined: Aug 2016
Posts: 12,753
Likes: 10,184
From: Garden Valley CA
Racer
Joined: May 2008
Posts: 399
Likes: 199
Race Director
Joined: Aug 2016
Posts: 12,753
Likes: 10,184
From: Garden Valley CA
https://www.tirerack.com/tires/tests...y.jsp?ttid=270
In general, summer tires are quieter than their AS counterparts because of the tread design.
Racer
Joined: May 2008
Posts: 399
Likes: 199
Here's a link to "Testing Michelin Tires Across Categories 2021":
https://www.tirerack.com/tires/tests...y.jsp?ttid=270
In general, summer tires are quieter than their AS counterparts because of the tread design.
https://www.tirerack.com/tires/tests...y.jsp?ttid=270
In general, summer tires are quieter than their AS counterparts because of the tread design.
Last edited by improviz; Dec 22, 2023 at 11:43 PM.
Melting Slicks
Joined: Dec 2006
Posts: 2,694
Likes: 106
Yes, the AS4 tires are quieter than the S4s or S5s... but I'd rather say they're less noisy, since they're not quiet by any means. In fact, the AS4s are one of the (if not the) noisiest UHP AS tires. I expected better from Michelin... but they perform very well otherwise.
Cruising
Joined: Apr 2020
Posts: 14
Likes: 10
Battery low start vehicle all the time
Hello all and Merry Christmas.
i have a 2021 C8, I continue to have the same problem.
If I sit in my car and push the start button and not brake pedal (accessory mode) the battery low start vehicle light comes on. First time happened in 2022. Then 1 year later it know has gone on for months. The dealer has recharged then next time new battery, then recharged, held for 1 month, probably doing nothing except charging Chevy. Next day same thing, brought back , replaced battery, next day battery low again. I just put it in on Friday December 22 again. I am worried, my warranty end February 2024.
i have a few questions for anyone that can help me?
1. Lemon law?
2. Go to another dealer?
3. Does anyone know what this problem could be caused from?
please help and thank you.
Joe
i have a 2021 C8, I continue to have the same problem.
If I sit in my car and push the start button and not brake pedal (accessory mode) the battery low start vehicle light comes on. First time happened in 2022. Then 1 year later it know has gone on for months. The dealer has recharged then next time new battery, then recharged, held for 1 month, probably doing nothing except charging Chevy. Next day same thing, brought back , replaced battery, next day battery low again. I just put it in on Friday December 22 again. I am worried, my warranty end February 2024.
i have a few questions for anyone that can help me?
1. Lemon law?
2. Go to another dealer?
3. Does anyone know what this problem could be caused from?
please help and thank you.
Joe
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Michael S. Palmer
Race Director
Joined: Aug 2016
Posts: 12,753
Likes: 10,184
From: Garden Valley CA
Hello all and Merry Christmas.
i have a 2021 C8, I continue to have the same problem.
If I sit in my car and push the start button and not brake pedal (accessory mode) the battery low start vehicle light comes on. First time happened in 2022. Then 1 year later it know has gone on for months. The dealer has recharged then next time new battery, then recharged, held for 1 month, probably doing nothing except charging Chevy. Next day same thing, brought back , replaced battery, next day battery low again. I just put it in on Friday December 22 again. I am worried, my warranty end February 2024.
i have a few questions for anyone that can help me?
1. Lemon law?
2. Go to another dealer?
3. Does anyone know what this problem could be caused from?
please help and thank you.
Joe
i have a 2021 C8, I continue to have the same problem.
If I sit in my car and push the start button and not brake pedal (accessory mode) the battery low start vehicle light comes on. First time happened in 2022. Then 1 year later it know has gone on for months. The dealer has recharged then next time new battery, then recharged, held for 1 month, probably doing nothing except charging Chevy. Next day same thing, brought back , replaced battery, next day battery low again. I just put it in on Friday December 22 again. I am worried, my warranty end February 2024.
i have a few questions for anyone that can help me?
1. Lemon law?
2. Go to another dealer?
3. Does anyone know what this problem could be caused from?
please help and thank you.
Joe
Cruising
Joined: Apr 2020
Posts: 14
Likes: 10
Thank you for the quick response. Below are the things Chevy should be checking when I bring the car there every time. My car is still under warranty and they are supposed to be the experts. I just thought someone might have had the same problem and supply me with a quick fix or at least know what the problem is.
Thank you for your help.
Thank you for your help.
- Parasitic Drain - If the electrical devices in your car or the lights on your car are left running even when your ignition is off, they will suck the juice out of your battery slowly but dramatically. This is often eerily described as parasitic drain.
- Defective charging system - A car battery drains quickly if something called the alternator on your charging system fails to push out enough voltage, ideally between 13.5 - 14.5 volts. In this case, the battery will continue to drain even while the car is running.
- Defective alternator diodes - Alternatively, the alternator could have defective diodes which would drain the life out of your battery
Racer
Joined: May 2008
Posts: 399
Likes: 199
Hello all and Merry Christmas.
i have a 2021 C8, I continue to have the same problem.
If I sit in my car and push the start button and not brake pedal (accessory mode) the battery low start vehicle light comes on. First time happened in 2022. Then 1 year later it know has gone on for months. The dealer has recharged then next time new battery, then recharged, held for 1 month, probably doing nothing except charging Chevy. Next day same thing, brought back , replaced battery, next day battery low again. I just put it in on Friday December 22 again. I am worried, my warranty end February 2024.
i have a few questions for anyone that can help me?
1. Lemon law?
2. Go to another dealer?
3. Does anyone know what this problem could be caused from?
please help and thank you.
Joe
i have a 2021 C8, I continue to have the same problem.
If I sit in my car and push the start button and not brake pedal (accessory mode) the battery low start vehicle light comes on. First time happened in 2022. Then 1 year later it know has gone on for months. The dealer has recharged then next time new battery, then recharged, held for 1 month, probably doing nothing except charging Chevy. Next day same thing, brought back , replaced battery, next day battery low again. I just put it in on Friday December 22 again. I am worried, my warranty end February 2024.
i have a few questions for anyone that can help me?
1. Lemon law?
2. Go to another dealer?
3. Does anyone know what this problem could be caused from?
please help and thank you.
Joe
Le Mans Master
Joined: Aug 2004
Posts: 6,412
Likes: 1,295
From: Bluffton, SC
Thank you for the quick response. Below are the things Chevy should be checking when I bring the car there every time. My car is still under warranty and they are supposed to be the experts. I just thought someone might have had the same problem and supply me with a quick fix or at least know what the problem is.
Thank you for your help.
Thank you for your help.
- Parasitic Drain - If the electrical devices in your car or the lights on your car are left running even when your ignition is off, they will suck the juice out of your battery slowly but dramatically. This is often eerily described as parasitic drain.
- Defective charging system - A car battery drains quickly if something called the alternator on your charging system fails to push out enough voltage, ideally between 13.5 - 14.5 volts. In this case, the battery will continue to drain even while the car is running.
- Defective alternator diodes - Alternatively, the alternator could have defective diodes which would drain the life out of your battery
Le Mans Master
Joined: Aug 2004
Posts: 6,412
Likes: 1,295
From: Bluffton, SC
If it's s true parasitic drain, I can’t believe you'd be able to start the car with no issues.
Intermediate
Joined: Feb 2023
Posts: 26
Likes: 25
From: California
Squeaky noises in PDR recordings
Has anyone noticed faint, constant squeaky background noises in their PDR recordings? When the radio is off, the noises are more obvious in the recording.
Those noises are recorded even when the car is stationary, with the engine running. I do not hear any such sounds in the cabin, so I think it’s either some electronic noise, or the mounting of the PDR is loose and the engine vibration is causing some faint squeaking that is not audible in the cabin, but the microphone picks it up.
Any thoughts or ideas on how to troubleshoot it?
Those noises are recorded even when the car is stationary, with the engine running. I do not hear any such sounds in the cabin, so I think it’s either some electronic noise, or the mounting of the PDR is loose and the engine vibration is causing some faint squeaking that is not audible in the cabin, but the microphone picks it up.
Any thoughts or ideas on how to troubleshoot it?
Race Director
Joined: Aug 2016
Posts: 12,753
Likes: 10,184
From: Garden Valley CA
Has anyone noticed faint, constant squeaky background noises in their PDR recordings? When the radio is off, the noises are more obvious in the recording.
Those noises are recorded even when the car is stationary, with the engine running. I do not hear any such sounds in the cabin, so I think it’s either some electronic noise, or the mounting of the PDR is loose and the engine vibration is causing some faint squeaking that is not audible in the cabin, but the microphone picks it up.
Any thoughts or ideas on how to troubleshoot it?
Those noises are recorded even when the car is stationary, with the engine running. I do not hear any such sounds in the cabin, so I think it’s either some electronic noise, or the mounting of the PDR is loose and the engine vibration is causing some faint squeaking that is not audible in the cabin, but the microphone picks it up.
Any thoughts or ideas on how to troubleshoot it?
Another possibility is that (if the same microphones that are in the door are used for the PDR) is that there is some feedback from the ANR system.
Bottom line is if you are are still under the B2B warranty I'd take it in for service. I don't notice that squeak but I don't listen to my recordings often.
Cruising
Joined: Apr 2020
Posts: 14
Likes: 10
Good morning all. I received my Corvette back from the dealer yesterday. The service advisor told me the mechanic had no clue why this was happening so, he tried other C8 in the shop and supposedly they all did the same thing. You put in accessory mode and as soon as you turn something on the battery low start vehicle comes on. The service advisor told me this is a normal operations for the C8 c.
Can anyone tell me if they are just blowing smoke up my _ _ _ or what?
Also, if anyone who has a c8 can they please check this for me.
Thank you for your help,
Joe
Can anyone tell me if they are just blowing smoke up my _ _ _ or what?
Also, if anyone who has a c8 can they please check this for me.
Thank you for your help,
Joe
Race Director
Joined: Aug 2016
Posts: 12,753
Likes: 10,184
From: Garden Valley CA
Good morning all. I received my Corvette back from the dealer yesterday. The service advisor told me the mechanic had no clue why this was happening so, he tried other C8 in the shop and supposedly they all did the same thing. You put in accessory mode and as soon as you turn something on the battery low start vehicle comes on. The service advisor told me this is a normal operations for the C8 c.
Can anyone tell me if they are just blowing smoke up my _ _ _ or what?
Also, if anyone who has a c8 can they please check this for me.
Thank you for your help,
Joe
Can anyone tell me if they are just blowing smoke up my _ _ _ or what?
Also, if anyone who has a c8 can they please check this for me.
Thank you for your help,
Joe
Last edited by RKCRLR; Dec 28, 2023 at 11:03 AM.
