Transmission issues 2020 C8
Thread Starter
Cruising
Joined: Dec 2020
Posts: 11
Likes: 20
From: Newport beach
Transmission issues 2020 C8
My car was bucking when coming to a stop. Ive owned and driven many DCT's and this is not normal. Took it into the dealer and they told me about the bulletin for reflash and flushing the trans. Bucking was still present and now being told I need a new trans at 560 miles. I waited a year for this???
Melting Slicks
Joined: Nov 2019
Posts: 2,528
Likes: 1,567
My car was bucking when coming to a stop. Ive owned and driven many DCT's and this is not normal. Took it into the dealer and they told me about the bulletin for reflash and flushing the trans. Bucking was still present and now being told I need a new trans at 560 miles. I waited a year for this???
Thread Starter
Cruising
Joined: Dec 2020
Posts: 11
Likes: 20
From: Newport beach
Well the saga continues. The bucking occurs when coming to a stop. kind of like a shudder downshifting coming to a stop. Every once in a while it would just stall out completely. They replaced the valve body because hey it cost less to do that but the problem still persists so now waiting for a new transmission.
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Le Mans Master
Joined: Dec 1999
Posts: 6,516
Likes: 4,840
From: One Hour From Boston!
Melting Slicks
Joined: Nov 2019
Posts: 2,528
Likes: 1,567
There may be a wave of duds in the Spring considering many can't drive their cars appreciably enough to discover/develop this or other problems. Worse yet, I don't see GM stockpiling parts for this likelihood (a condensed period of failures) and dealers might not be too keen to put warranty work on the front burner. Small dealers with limited Corvette knowledge/experience could put those buyers in this unfortunate situation this Spring in especially bad shape. Likewise, if you buy from one of the major forum dealers and aren't close enough to get it serviced by them, you'll be "tail end charlie" at whatever dealer you hook up with at home as you bought your car elsewhere.
Like Dirty Harry says..."Do you feel lucky?".
Like Dirty Harry says..."Do you feel lucky?".
5th Gear
Joined: Jul 2020
Posts: 5
Likes: 0
From: Newport Beach, Ca
Last edited by Woosaww; Dec 18, 2020 at 01:54 PM.
Instructor
Joined: Mar 2007
Posts: 175
Likes: 9
From: Clermont, FL
That really sux. I just posted in another thread that I just started getting a CEL and I checked the code and it’s a p0700 which is transmission. I’m hoping it’s not this bad!. Good luck with the replacement. I definitely would hate it being told 3 months without a car I’ve just got.
Le Mans Master
Joined: Aug 2015
Posts: 8,243
Likes: 4,617
From: Southwest Florida
Hope this isn’t the start of a new transmission saga. Looks like my decision to wait until the third production year is a good one given I was never a fan of being an early adopter.
Team Owner
Joined: Aug 2000
Posts: 24,110
Likes: 1,329
From: Spring Texas
That really sux. I just posted in another thread that I just started getting a CEL and I checked the code and it’s a p0700 which is transmission. I’m hoping it’s not this bad!. Good luck with the replacement. I definitely would hate it being told 3 months without a car I’ve just got.
Advanced
Joined: Apr 2015
Posts: 65
Likes: 6
From: Lake Jackson TX
Just took delivery of my Rapid Blue C8 last Thursday, 6 miles. I drove it to my house 2 miles and the shifting was BAD! CEL came on, took it to the local dealer and they confirmed the code, reset, drove around their lot and it threw the same code. Now with 8 miles the car is at the dealer. I am told GM has determine the DCT needs to be replace. No firm date but should expect 3-4 weeks. Not a good start to my mid engine experience.
