One of the strong suits of the C8 Corvette is the new eight-speed dual-clutch transmission that shifts quickly and smoothly.
It’s good to hear that General Motors is standing behind its technological wonder, at least in the case of certain 2023 and 2024 Corvettes.
Apparently, an unknown number of affected Corvettes in those two years have transmission fasteners that were improperly torqued. To solve the problem, the company released Customer Satisfaction Bulletin #N232427051 that authorizes dealers to replace the transmission “at no charge to customers, regardless of mileage, age of vehicle, or ownership, through May 31, 2026.”
The Bulletin says certified GM technicians will inspected affected cars and replace the transmission and all corresponding components, including a coolant flush, as necessary. The work is expected to take between 15.4 and 18.5 hours to complete.
While the C8’s dual-clutch transmission offers great performance, it hasn’t been without its critics. For example, back in late 2021, GM opened an investigation into the transmission after receiving many reports related to various problems.
Eventually, GM began using an updated Die 3 transmission design for Stingrays late in the 2023 model year and continuing into the 2024s. From a previous article, we do know that the new transmissions went into the 2023 Stingrays beginning with sequence number 37,263 and the 70th Anniversary Stingrays at VIN 3905. Based on a letter posted on the Corvette Action Center website, it appears that affected customers will receive a notification explaining the situation for their car.
Customer Satisfaction Bulletin #N232427051
Certain 2023-2024 model year Chevrolet Corvette vehicles may have a condition in which the transmission fasteners were improperly torqued.
Correction:
Dealers will replace the transmission.
Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle, or ownership, through May 31, 2026. Customers who have recently purchased vehicles sold from your vehicle inventory, and for which there is no customer information indicated on the involved vehicle listing, are to be contacted by the dealer. Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. A copy of the customer letter is provided in this bulletin for your use in contacting customers. Program follow-up cards should not be used for this purpose, since the customer may not as yet have received the notification letter.
In summary, whenever a vehicle subject to this program enters your vehicle inventory or is in your facility for service through May 31, 2026, you must take the steps necessary to be sure the program correction has been made before selling or releasing the vehicle.
Source:
Corvette Action Center
Related:
GM Issues Service Bulletin for the 2024 Corvette Z06 Automatic Shift to Park Function
The Special Bulletin for Fixing the C6 Corvette’s Pesky Fuel Leak Issue Has Now Expired
GM Has Issued a Service Bulletin for the LT6 in Regards to Oil Leaking from Front of Engine
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Glad I am waiting until 2026 to order my car, hopefully by then they will have all the bugs worked out.
Are VIN numbers available for effected 2024 C8s?
Does this also apply to the Z06 or just Stingray?
Are the service techs any better than the people who built the cars? Hopefully no former Boeing employees. Sign of the times.
Z06 is included. What a mess.
I am hoping ‘praying’ that my ’24 Corvette will be one of the notified and will get a transmission replacement. It has been plagued with transmission whine since new, with no resolution from Chevrolet or my dealership.
Wow, this is a massive repair where the entire engine and transmission must come out of the car. Along with the entire rear cooling system and rear suspension. Basically drop the whole rear cradle with everything attached. Then split the transmission from the motor after lifting them off the cradle. But not before removing the cooling system and suspension. Wow. I’d imagine those who are not driving their cars much will pass on this free transmission replacement. I would have to think hard myself. Is it worth it if I wasn’t having issues.?.