C8 Problems
Thread Starter
Racer
Joined: Mar 2014
Posts: 321
Likes: 84
From: Marco Island FL
C8 Problems
Got the bad news today! Took my 2021 C8 in for the 7,500 mile service to be told the DCT is leaking and will need to be replaced.
Seriously, I thought the DCT issues were resolved by now.
Late June 2021 build VIN XXXXXXXXXXXXX8006
Guess I should have gone with the BMW.
Seriously, I thought the DCT issues were resolved by now.
Late June 2021 build VIN XXXXXXXXXXXXX8006
Guess I should have gone with the BMW.
Popular Reply
Dec 29, 2021, 05:04 PM
Instructor
Joined: Oct 2021
Posts: 224
Likes: 282
Drifting
Joined: Sep 2020
Posts: 1,453
Likes: 1,194
From: DFW
Got the bad news today! Took my 2021 C8 in for the 7,500 mile service to be told the DCT is leaking and will need to be replaced.
Seriously, I thought the DCT issues were resolved by now.
Late June 2021 build VIN XXXXXXXXXXXXX8006
Guess I should have gone with the BMW.
Seriously, I thought the DCT issues were resolved by now.
Late June 2021 build VIN XXXXXXXXXXXXX8006
Guess I should have gone with the BMW.
Burning Brakes
Joined: Sep 2021
Posts: 816
Likes: 904
From: Cincinnati
After a long wait, I may finally get to order my C8 in January. My hope was that after several years, GM would have the DCT issues knocked out by now. Even if it doesn't go bad within the first few thousand miles, the concern is it will go bad right after the drive train warranty expires. I think I read an out of warranty DCT replacement is about $22K. Not something anyone of us here wants to experience.
I'm probably going to go ahead and order mine anyways, and IF I require a DCT replacement under warranty, hopefully by then the replacement DCT will have been de-bugged and engineered to be reliable.
I'm probably going to go ahead and order mine anyways, and IF I require a DCT replacement under warranty, hopefully by then the replacement DCT will have been de-bugged and engineered to be reliable.
Burning Brakes
Joined: Feb 2008
Posts: 791
Likes: 230
From: SoCal CA
Sorry to hear. That must be frustrating. Ignore it when people here passively-aggressively blame you for the DCT failing.
Hopefully it is fixed quickly and once only. Can you keep driving the car until the transmission comes in?
Hopefully it is fixed quickly and once only. Can you keep driving the car until the transmission comes in?
Advanced
Joined: May 2020
Posts: 63
Likes: 17
Got the bad news today! Took my 2021 C8 in for the 7,500 mile service to be told the DCT is leaking and will need to be replaced.
Seriously, I thought the DCT issues were resolved by now.
Late June 2021 build VIN XXXXXXXXXXXXX8006
Guess I should have gone with the BMW.
Seriously, I thought the DCT issues were resolved by now.
Late June 2021 build VIN XXXXXXXXXXXXX8006
Guess I should have gone with the BMW.
Thread Starter
Racer
Joined: Mar 2014
Posts: 321
Likes: 84
From: Marco Island FL
Not hardly, transmission fluid is extremely flammable. Would you drive with a known gasoline leak?
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Thread Starter
Racer
Joined: Mar 2014
Posts: 321
Likes: 84
From: Marco Island FL
After a long wait, I may finally get to order my C8 in January. My hope was that after several years, GM would have the DCT issues knocked out by now. Even if it doesn't go bad within the first few thousand miles, the concern is it will go bad right after the drive train warranty expires. I think I read an out of warranty DCT replacement is about $22K. Not something anyone of us here wants to experience.
I'm probably going to go ahead and order mine anyways, and IF I require a DCT replacement under warranty, hopefully by then the replacement DCT will have been de-bugged and engineered to be reliable.
I'm probably going to go ahead and order mine anyways, and IF I require a DCT replacement under warranty, hopefully by then the replacement DCT will have been de-bugged and engineered to be reliable.
Advanced
Joined: May 2020
Posts: 63
Likes: 17
Race Director
Joined: Aug 2016
Posts: 12,763
Likes: 10,198
From: Garden Valley CA
Transmission fluid is not any more flammable than engine oil, certainly not like gasoline. If it were there would be a lot more Car-B-Qs from old cars running around. If you didn't see any leakage making it to your garage floor it probably isn't a big leak.
Advanced
Joined: May 2020
Posts: 63
Likes: 17
Exactly my thought as well.
Melting Slicks
Joined: Dec 2020
Posts: 3,485
Likes: 3,312
Got the bad news today! Took my 2021 C8 in for the 7,500 mile service to be told the DCT is leaking and will need to be replaced.
Seriously, I thought the DCT issues were resolved by now.
Late June 2021 build VIN XXXXXXXXXXXXX8006
Guess I should have gone with the BMW.
Seriously, I thought the DCT issues were resolved by now.
Late June 2021 build VIN XXXXXXXXXXXXX8006
Guess I should have gone with the BMW.
That said, your last sentence about the BMW seems gratuitous and TSIwing's retort quite appropriate in response...
Drifting
Joined: Apr 2014
Posts: 1,458
Likes: 625
From: Southeast, FL.
Got the bad news today! Took my 2021 C8 in for the 7,500 mile service to be told the DCT is leaking and will need to be replaced.
Seriously, I thought the DCT issues were resolved by now.
Late June 2021 build VIN XXXXXXXXXXXXX8006
Guess I should have gone with the BMW.
Seriously, I thought the DCT issues were resolved by now.
Late June 2021 build VIN XXXXXXXXXXXXX8006
Guess I should have gone with the BMW.
Melting Slicks
Joined: May 2021
Posts: 2,562
Likes: 1,579
Also, the DCTF is pretty expensive. If you think the 0W-40 ESP Mobile 1 oil is high priced, check the prices on the Pentosin FFL-4, haha!
So you never saw any oil on the garage floor? No oil on the aluminum plate? No CEL or codes? No trouble with the driveability?
I would seriously want to SEE that leak before I ditched that car to the dealer. Put a clean catch bucket underneath, open the drain, lets see how much fluid is in there. Replace the fluid back into the DCT, top it off, put some tracing powder around the porosity issue area and drive it for a day or two.
Then drain it back out again and compare the level, did the tracing powder show a leak down the side? It could still be a pan gasket issue maybe?
2nd Gear
Joined: May 2021
Posts: 2
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From: new York, Brooklyn
My C8 was in shop 3 days I picked it up for DCT problems.
My C8 was in the shop 3 days after I picked it up for DCT problems. Transmission was replaced but still having problems.
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Sorry to hear about the tranny problem. Hopefully the dealer will get it fixed fast and you will enjoy many trouble free miles from the car.
2nd Gear
Joined: May 2021
Posts: 2
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From: new York, Brooklyn