How many issues can a C8 have?
Thread Starter
Intermediate
Joined: Jul 2022
Posts: 33
Likes: 20
How many issues can a C8 have?
Just curious…am I the only one with this many issues at 15k ish miles?
FOLLOW UP EDIT ======================
It is clear I ruffled some feathers with my approach to information gathering in here. Didn't mean to do that at all but since I've found a great deal of information in these forums over the years I thought I'd try to course correct a bit. I thought the easiest way to list some of the issues was just to link to a video I'd already created. Lazy on my part.
So...let me rephrase...not complaining or whining or worried about the money or blaming the C8 which I love and yes I do all of the maintenance as scheduled no problem...just asking...are the issues I've experienced typical do you think?
END EDIT =============================
FOLLOW UP EDIT ======================
It is clear I ruffled some feathers with my approach to information gathering in here. Didn't mean to do that at all but since I've found a great deal of information in these forums over the years I thought I'd try to course correct a bit. I thought the easiest way to list some of the issues was just to link to a video I'd already created. Lazy on my part.
So...let me rephrase...not complaining or whining or worried about the money or blaming the C8 which I love and yes I do all of the maintenance as scheduled no problem...just asking...are the issues I've experienced typical do you think?
- At 3842 miles DTC codes, axle off messages, tailpipe actuator valve serviced, and headlight sensor replaced.
- At 5013 miles more DTC messages requiring diagnostics and investigation.
- At 7737 miles a rear tire replaced due to a leak with no visible punctures
- At 7753 the front rotors had hot spotting so I replaced them
- At 9121 miles replaced bent rim
- At 9485 miles a convertible lid motor needed replacement
- At 15015 the convertible cable broke
- Finally just a few days ago at 15,521 after it sat in the garage on the charger for six months the OnStar module bellied up.
END EDIT =============================
Last edited by QDPresident; Apr 27, 2026 at 12:20 AM.
Popular Reply
Apr 25, 2026, 09:25 AM
Safety Car
Joined: Apr 2008
Posts: 4,829
Likes: 1,843
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
Sorry didn't feel like watching or listening to a whiney complaint video.
Absolutely no problems with mine. I LOVE IT!!
Absolutely no problems with mine. I LOVE IT!!
Safety Car
Joined: Apr 2008
Posts: 4,829
Likes: 1,843
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
Sorry didn't feel like watching or listening to a whiney complaint video.
Absolutely no problems with mine. I LOVE IT!!
Absolutely no problems with mine. I LOVE IT!!
Thread Starter
Intermediate
Joined: Jul 2022
Posts: 33
Likes: 20
Thread Starter
Intermediate
Joined: Jul 2022
Posts: 33
Likes: 20
Yeah...that's kind of what I'm trying to find out. Setting my brake issues aside, I've still had three significant repairs and I am just entering my fourth summer with the car. When you put it the way you did, it sure seems like it might just be my car basically.
Melting Slicks
Joined: Aug 2017
Posts: 2,184
Likes: 2,201
From: Massachusetts
I watched to learn what problems others are having and the solutions.
For example, I learned others have had the cable snap for the HTC wings. So I carry zip ties just in case.
2024 HTC, 9k miles, and doing well. Would love to have a newer Corvette with the LS6 engine someday.
For example, I learned others have had the cable snap for the HTC wings. So I carry zip ties just in case.
2024 HTC, 9k miles, and doing well. Would love to have a newer Corvette with the LS6 engine someday.
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Thread Starter
Intermediate
Joined: Jul 2022
Posts: 33
Likes: 20
I watched to learn what problems others are having and the solutions.
For example, I learned others have had the cable snap for the HTC wings. So I carry zip ties just in case.
2024 HTC, 9k miles, and doing well. Would love to have a newer Corvette with the LS6 engine someday.
For example, I learned others have had the cable snap for the HTC wings. So I carry zip ties just in case.
2024 HTC, 9k miles, and doing well. Would love to have a newer Corvette with the LS6 engine someday.
Thx. That was why I shared this. I figure the more people know about others' problems, the better. I also discovered last year (I think in these forums) that I was not the only one with the convertible part issue. It was quite a thing for me when it happened. I was traveling and I was an hour away from the nearest Chevy dealer in Paducah, KY. Was a thrilling drive trying to beat the rain to get there since I could not put the top up. The zip ties were the temp fix for sure and, I had not considered it before, but I will absolutely be putting a few into the car. BTW the Paducah dealer was excellent, got me going no charge. Of course, I parted with some unofficial cash for sure. Super thankful for the help.
Melting Slicks
Joined: Apr 2021
Posts: 2,594
Likes: 2,651
From: Texas
The bulk of the video seems to be about the stupid app, connected services, gps lift locations...
Sorry dont really care about ANY of those. Can't cars just be f'n cars anymore? I dont need a GPS lift to protect my front clip. Just pay attention to approach angle. Don't need (and dont WANT) onstar. Dont need an app on my damn phone. If the car DRIVES, I'm good.
HTC cables snapping is a legit issue and GM needs to make those more robust. NPP valve issue is a fair point but uncommon.
And c'mon man, you torched your brake pads driving "hard" for 2 days on public roads? If that is true, you are lucky you werent seen by a cop and arrested. You'd have to be going REALLY hard to kill the pads on a car with (what was it 5k miles?). That isn't a problem or "issue" with the car.
I fast forwarded through a lot of the nonsense to try and capture key points. Other than the HTC cable and NPP valve, I see no real arguments for a problematic car in your video. No DCT failure, no engine failure, car is driveable.
Sorry dont really care about ANY of those. Can't cars just be f'n cars anymore? I dont need a GPS lift to protect my front clip. Just pay attention to approach angle. Don't need (and dont WANT) onstar. Dont need an app on my damn phone. If the car DRIVES, I'm good.
HTC cables snapping is a legit issue and GM needs to make those more robust. NPP valve issue is a fair point but uncommon.
And c'mon man, you torched your brake pads driving "hard" for 2 days on public roads? If that is true, you are lucky you werent seen by a cop and arrested. You'd have to be going REALLY hard to kill the pads on a car with (what was it 5k miles?). That isn't a problem or "issue" with the car.
I fast forwarded through a lot of the nonsense to try and capture key points. Other than the HTC cable and NPP valve, I see no real arguments for a problematic car in your video. No DCT failure, no engine failure, car is driveable.
Last edited by Korbek; Apr 25, 2026 at 10:30 AM.
Thread Starter
Intermediate
Joined: Jul 2022
Posts: 33
Likes: 20
The bulk of the video seems to be about the stupid app, connected services, gps lift locations...
Sorry dont rrally care about ANY of those. Can't cars juzt be f'n cars anymore? I dont need a GPS lift to protect my front clip. Just pay attention to approach angle. Don't need (and dont WANT) onstar. Dont need an app on my damn phone. If the car DRIVES, I'm good.
HTC cables snapping is a legit issue and GM needs to make those more robust.
Sorry dont rrally care about ANY of those. Can't cars juzt be f'n cars anymore? I dont need a GPS lift to protect my front clip. Just pay attention to approach angle. Don't need (and dont WANT) onstar. Dont need an app on my damn phone. If the car DRIVES, I'm good.
HTC cables snapping is a legit issue and GM needs to make those more robust.
Melting Slicks
Joined: Apr 2021
Posts: 2,594
Likes: 2,651
From: Texas
The older Navs with DVD maps were likely more reliable than connected/online navs in newer cars. I've heard of nav failure on Lexus, BMW, MB, Ford, Porsche, etc etc. Welcome to the world of everyone thinking they need a cell phone with wheels on top of the cell phone in their wallet.
Cars do not NEED all this nonsense.
Sorry mate I mean no disrespect but your video comes off as just an excuse to complain. The only legit issues IMO are the HTC cable (a design flaw) and the NPP valve (a minor warrantied issue).
I do hope you enjoy many less problematic miles and no major issues like the dreaded DCT failure.
Last edited by Korbek; Apr 25, 2026 at 10:40 AM.
Thread Starter
Intermediate
Joined: Jul 2022
Posts: 33
Likes: 20
And c'mon man, you torched your brake pads driving "hard" for 2 days on public roads? If that is true, you are lucky you werent seen by a cop and arrested. You'd have to be going REALLY hard to kill the pads on a car with (what was it 5k miles?). That isn't a problem or "issue" with the car..
So...stop me when you understand. Highway miles except for that time should not have resulted in brake pads that were as bad as Andy told me they were.
Melting Slicks
Joined: Apr 2021
Posts: 2,594
Likes: 2,651
From: Texas
That is the point. The ONLY time I drove it like that was those two days. Tires were hot according to dash, I received a shifting error message at one point, and I would have been absolutely arrested had I been caught. You can't really go much faster than 50 on most of those roads but they are awesome to drive. I know them pretty well from my motorcycle days which is why I drove from Illinois down to Ohio to drive them. Quiet, turny, hilly, excellent asphalt roads that pretty much are empty most of the time and some of the homes actively broom gravel out of the corners. Fantastic spot to run the car hard.
So...stop me when you understand. Highway miles except for that time should not have resulted in brake pads that were as bad as Andy told me they were.
So...stop me when you understand. Highway miles except for that time should not have resulted in brake pads that were as bad as Andy told me they were.
Were brake cooling ducts installed? A requirement for very aggressive driving, especially with a lot of heavy braking zones like a twisty switchback in southern ohio, to properly cool them or yeah, they'll torch. My mom lives in Bucyrus so I've driven those roads a lot when kickin' around between her and my family in the Lexington KY area.
That said, I wont presume to comment further on your driving, your car, or your dealer technician's knowledge. As I said I hope you enjoy plenty of miles ahead. But I dont think the video is productive in any meaningful way.
Last edited by Korbek; Apr 25, 2026 at 11:01 AM.
Thread Starter
Intermediate
Joined: Jul 2022
Posts: 33
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Oh I understand fully and am not going to argue back and forth. I've run cars very aggressively. If you were on a soft brake pad like a non Z51, it isnt a pad problem its a use problem. If they were Z51 pads and you really hammered it for 2 straight days, it's still just the nature of pushing it hard. I SERIOUSLY doubt it was an issue with the pads themselves. They're called consummables for a reason. Were brake cooling ducts installed? (A requirement for very aggressive driving to properly cool them or yeah, they'll torch.)
That said, I wont presume to comment further on your driving, your car, or your dealer technician's knowledge. As I said I hope you enjoy plenty of miles ahead. But I dont think the video is productive in any meaningful way.
That said, I wont presume to comment further on your driving, your car, or your dealer technician's knowledge. As I said I hope you enjoy plenty of miles ahead. But I dont think the video is productive in any meaningful way.
Melting Slicks
Joined: Apr 2021
Posts: 2,594
Likes: 2,651
From: Texas
Could be a use problem, for sure. Standard factory Z51 pads. No vents installed, public roads. I guess the big issue with the brakes is the fact that they are still squeaking two years after they have been replaced. I'll cover all of this at the dealer in a couple of weeks. I dropped the video on YouTube so essentially other people with the OnStar module issue could know that others were having the same issue. I dropped the link in here this morning to do a sound check for myself. So far, it sounds like my car. I'm good with that. Hell, it could even be me. I'm good with that, too. I'm considering replacing it with a 2027 so...just sound checking. I love the car. LOVE the car. Appreciate the well wishes, and I echo the same well meaning words back to you. Matter of fact, I love it so much I very quickly decided that if I was to replace it I would replace with another Vette. I'm looking forward to another summer of Corvetting for sure.
They keep getting faster which is great I suppose, but it makes roads more sketchy since the average driver cant handle the speed if literally anything unexpected happens.
But they also keep getting more complicated and electronic. I love my LC as a GT and just a downright unique car, but it's a pretty numb driving experience other than the awesome engine and exhaust. My C8 was similar. Less unique, much faster, but still very numb. I wish we had the suspension and engine improvements of the 2020s with the largely analog experience otherwise in the early 00's cars.
Racer
Joined: Aug 2006
Posts: 465
Likes: 198
From: Indian Harbour Beach
People get very butt hurt if you talk about issues with the C8. I've got nothing but wonderful things to say about the car where dynamics are concerned. Build quality is typical GM...many steps behind the industry leaders.
Thread Starter
Intermediate
Joined: Jul 2022
Posts: 33
Likes: 20
LOL Yeah I kind of discovered that this morning. Nobody needs people ragging on their cars and that wasn't my intent. My C8 is awesome. Was really just wondering if my experience was typical.
