DCT expected lifetime?
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Joined: Mar 2020
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DCT expected lifetime?
The Chevy powertrain warranty on the C8 is 5 years/60000 miles. I've seen owners of BMW's using wet DCT's that have over 150,000 miles using the original clutch rings.
The lifetime of the DCT obviously depends on the driving habits of the owner. Anyone have a feel for how long the C8 clutch plates will last under "normal spirited" driving? I've heard that Chevy put a lot of hours of test driving on the C8. Anyone seen any info from Chevy which addresses this question?
The lifetime of the DCT obviously depends on the driving habits of the owner. Anyone have a feel for how long the C8 clutch plates will last under "normal spirited" driving? I've heard that Chevy put a lot of hours of test driving on the C8. Anyone seen any info from Chevy which addresses this question?
Last edited by tdrake2020; Mar 31, 2020 at 12:04 AM.
Race Director
Joined: Oct 1999
Posts: 11,535
Likes: 115
From: Arlington TX
The wet clutch setup is like the clutches in an automatic transmission. Automatic transmissions clutches do not need to slip to start the car from a stop they just need to slip to make gear changes smooth. I rebuilt the transmission in my Tahoe at 192,000 miles due to a torque converter issue. I replaced the clutches but they didn't need it, the worst wear I measured was 0.003" in all those miles. That is the thickness of a sheet of paper. I am sure GM is thinking they will last well over 100k miles or owners would raise hell.
Le Mans Master
Joined: Aug 2000
Posts: 5,529
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From: Austin Texas
I would guess the guys who just drive on the road (no track or strip) can get 200,000 miles on the DCT clutch plates.
I would guess that guys who track teh car will still get 100,000 miles on the DCT clutch plates.
I would not guess about strip driving.
I would guess that guys who track teh car will still get 100,000 miles on the DCT clutch plates.
I would not guess about strip driving.
Race Director
Joined: Sep 2016
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At the NCM 25th, GM said they are not considered normal wear items, like the clutch in a manual. That doesn't answer your question, but it should provide some indication. Wet clutches generally last nearly forever if not abused.
Racer
Joined: Oct 2009
Posts: 292
Likes: 55
From: Dallas Texas
THE greatest thing about Corvettes is that you can drive them hard for 200,000 miles with nothing but fluid changes (well.....lets not bring up how GM screwed the LS7 guys). I'm hoping GM has done their usual job of overbuilding/over engineering this new transmission to take the typical beating that a lot of Corvette faithful like to give their cars.
Then again.....if you break it, you can try shoehorning in a fun transmission instead of the DCT.
Then again.....if you break it, you can try shoehorning in a fun transmission instead of the DCT.
Burning Brakes
Joined: Jul 2014
Posts: 921
Likes: 345
I had a TT which had a DCT it lasted for 85,000 miles before I traded it in...the DCT had no issues. I did have to get it serviced every 35,000 miles which runs about 1,000 - the fluid was/is expensive and 2 hours of labor. I have not idea what the corvette is calling for in terms of service but expect it to be similar service intervals.
Burning Brakes
Joined: Apr 2016
Posts: 864
Likes: 326
All depends the early ones were known for clutch failures in, vw, and Audi, seems like they got it now, I don’t see many issues any more but you need to change the fluid and filter if it has one every 40k, and the German cars, you need a scan tool to check trans temp before you check the level.
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Instructor
Joined: Jun 2019
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From: Las Vegas
That's the key right there. I think we're going to see some people beating the ever living **** out of these cars, having issues, then complaining incessantly on YouTube like the car is flawed.