C8 problems
Drifting
Joined: Apr 2021
Posts: 1,553
Likes: 1,062
Hello,
While I don't own a C8, a friend does. He doesn't use social media, and asked if I would post this for him.
His C8 convertible has an issue which he considers a design flaw. He said that if you open your driver's door on a convertible with the top up, after the battery has died, the window will scrape the A pillar.
Here's a video he had taken to show it:
https://drive.google.com/file/d/1sHP...BMX1jtuDjlIUjs
While I don't own a C8, a friend does. He doesn't use social media, and asked if I would post this for him.
His C8 convertible has an issue which he considers a design flaw. He said that if you open your driver's door on a convertible with the top up, after the battery has died, the window will scrape the A pillar.
Here's a video he had taken to show it:
https://drive.google.com/file/d/1sHP...BMX1jtuDjlIUjs
Last edited by Samuel Clemens; Oct 18, 2021 at 01:26 PM.
Racer
Joined: Dec 2005
Posts: 474
Likes: 127
From: Stafford Virginia
I think @Raiden is talking about opening the door while the battery is dead which is the only way you can get access to the battery unless the frunk is already open. Hopefully it doesn't cause permanent paint damage to the A pillar. You could probably connect power to the alternator wire from underneath the car to open the frunk but that would be a hassle. You could run a charging wire to outside the frunk if you are really concerned about it happening in the future. Or perhaps a cable connected to the frunk latch like the one inside the car.
But, yes, the windows will likely need to be re-indexed after a power loss.
But, yes, the windows will likely need to be re-indexed after a power loss.
Last edited by 1FSTZ06; Oct 18, 2021 at 01:31 PM.
Melting Slicks
Joined: Feb 2006
Posts: 2,261
Likes: 1,431
From: Brentwood CA
Thanks for the reply. I talked to my friend about what you said, and he told me he's been through the manual more than once, and didn't see this. He said you have to open the door to unlatch the frunk to get to the battery, which is the main problem. Where in the manual is this indexing procedure?
Drifting
Joined: Sep 2020
Posts: 1,453
Likes: 1,193
From: DFW
Hello,
While I don't own a C8, a friend does. He doesn't use social media, and asked if I would post this for him.
His C8 convertible has an issue which he considers a design flaw. He said that if you open your driver's door on a convertible with the top up, after the battery has died, the window will scrape the A pillar.
Here's a video he had taken to show it:
https://drive.google.com/file/d/1sHP...BMX1jtuDjlIUjs
While I don't own a C8, a friend does. He doesn't use social media, and asked if I would post this for him.
His C8 convertible has an issue which he considers a design flaw. He said that if you open your driver's door on a convertible with the top up, after the battery has died, the window will scrape the A pillar.
Here's a video he had taken to show it:
https://drive.google.com/file/d/1sHP...BMX1jtuDjlIUjs
Last edited by tsigwing; Oct 18, 2021 at 06:51 PM.
5th Gear
Joined: Oct 2021
Posts: 5
Likes: 0
I think @Raiden is talking about opening the door while the battery is dead which is the only way you can get access to the battery unless the frunk is already open. Hopefully it doesn't cause permanent paint damage to the A pillar. You could probably connect power to the alternator wire from underneath the car to open the frunk but that would be a hassle. You could run a charging wire to outside the frunk if you are really concerned about it happening in the future. Or perhaps a cable connected to the frunk latch like the one inside the car.
But, yes, the windows will likely need to be re-indexed after a power loss.
But, yes, the windows will likely need to be re-indexed after a power loss.
can he use the key fob to open the HTC and then get in the car to reprogram the windows as somebody else mentioned on page 30 of the owners manual? Sorry I guess I assumed the power was back on but he was getting scraping on the doors. I have no clue but to open the door slowly if there is no power.
Hard to tell what exactly is taking place without more info. I assumed he had the power back because it appeared he had opened and closed the door a few times and was filming what was taking place. With a dead battery, you are correct you need to open the door (carefully as the window won't index) to get to the frunk release. If it were me, I wouldn't close the door all the way so as not to damage the paint on the a-pillar until I could re-index the window. Replace/recharge the battery at which time you then could go ahead and re-index the windows.
Basically, there should be a way to open the front trunk without having to get inside the cabin, to avoid this issue. The instructions in the manual, I believe, for re-indexing the windows is for after power is restored, so it's not useful in this situation.
So yes, the window scratched up the clearcoat (and possibly the paint, not sure on this) when he attempted to get inside to unlatch the frunk.
I can't imagine the hardtop will open using the key fob if the battery is dead.
Melting Slicks
Joined: Feb 2006
Posts: 2,261
Likes: 1,431
From: Brentwood CA
Thanks everyone for the replies. After talking to him, he said the issue is that if your battery dies, you have to open the door to get to the front trunk (frunk) release to get to the battery, so you're basically stuck having to damage your A pillar. He believes that a tiny change in the design of the A pillar, to make it a tiny bit narrower, would solve this problem, as the window only scraped in one small spot, easily avoidable with a small change in the pillar shape or width.
Basically, there should be a way to open the front trunk without having to get inside the cabin, to avoid this issue. The instructions in the manual, I believe, for re-indexing the windows is for after power is restored, so it's not useful in this situation.
So yes, the window scratched up the clearcoat (and possibly the paint, not sure on this) when he attempted to get inside to unlatch the frunk.
I can't imagine the hardtop will open using the key fob if the battery is dead.
Basically, there should be a way to open the front trunk without having to get inside the cabin, to avoid this issue. The instructions in the manual, I believe, for re-indexing the windows is for after power is restored, so it's not useful in this situation.
So yes, the window scratched up the clearcoat (and possibly the paint, not sure on this) when he attempted to get inside to unlatch the frunk.
I can't imagine the hardtop will open using the key fob if the battery is dead.
Melting Slicks
Joined: May 2021
Posts: 2,562
Likes: 1,579
And people were hollering in another thread that "you don't need a battery charger".
Yeah, I will keep my car on a charger when parked in my garage, and if not on a charger, I keep my window rolled down.
Yeah, I will keep my car on a charger when parked in my garage, and if not on a charger, I keep my window rolled down.
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5th Gear
Joined: Oct 2021
Posts: 5
Likes: 0
Drifting
Joined: Sep 2020
Posts: 1,453
Likes: 1,193
From: DFW
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: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
@RT82 I get what you're saying...if you see it everyday, yes, it would be bothersome. I'll pass along my wife's advice. Put your order in for a 22 or 23 and when it's ready, sell your current car for likely what you paid for it - or close - and hopefully GM will have worked out the kinks in the new one. This is my first vet, but I have repeatedly been told that these cars are famous for some QC issues. My final thought is, even at 100K+ this car is still a bargain. Good luck to you brother.
So don't expect a 2022 or 2023 to be any better. As long as people continue to buy the C8 in high numbers, quality will sit on the backburner.
Melting Slicks
Joined: Sep 2005
Posts: 2,816
Likes: 955
Race Director
Joined: Aug 2016
Posts: 12,711
Likes: 10,140
From: Garden Valley CA
I suspect the dealer just didn't want to go through the hassle of giving you the car back until the new wheels come in.