general problems of the 2020 Chevrolet Corvette

The dual clutch transmission on my 2020 c8 Corvette has a diagnostic code of p1955. This was determined after the service light on the vehicle illuminated and it was taken to service at the dealership. Other codes that stored included p0868 and p0869 which indicate low hydraulic pressure and high hydraulic pressure respectively. The p1955 code is an internal fault that requires complete replacement of the transmission according to gm service bulletins. This bulletin also advises that no repair attempts are to be made except for complete replacement. The vehicle has not shown any symptoms currently. Gears shift normally, there are no vibrations, etc. However, the dealership advised the transmission can go into limp mode, fail completely, or damage other components of the power train at any point. This issue is known to gm. They have investigated the matter since 2021 or earlier. There have been no recalls on the transmission despite the safety risks of sudden loss of power, being stranded, or catastrophic destructive failure without warning. These pose risks to occupants inside the vehicle and other vehicles or people on the road. My repeated questioning of this matter to the dealership and gm customer service have been ignored. They only advise the cost to replace is with the owner of the vehicle despite the root cause being at the level of engineering of the part. They are unwilling to admit this failure is at the level of a manufacturing/engineering defect as a financial cost mitigation strategy. The issue with sudden failure of the transmission in these vehicles are widely known, investigated, and occurring at a high rate, especially in early model c8 Corvettes.

I had a complete transmission failure while on a road trip over July 4th. I just read that gm was doing a recall on the transmission control module but it does not include my car, which is what failed on my car at 19,000 miles. My trip was interrupted, we spent two days paying for hotel & rental car in springfield, mo and now my car is fixed with new tcu in springfield, but I live in dfw area. If my car had a recall I would have had it fixed before our trip and this all could have been avoided. Now I have to figure out how to get my car back home.

At the time of incident the vehicle had 660 miles. Most of the accumulated miles are: 60% street and 40% hiway. I was inspecting the wheels and tire when I spotted a significant amount of grey/black colored grease randomly covering the inner wheel. Upon further inspection I noticed that the grease was splattered on the emergency brake unit, sensors and wiring harness. The grease was isolated to the rear passanger axle. I suspect that the grease came from a defective cv boot. Took vehicle in to checkout the problem and they determined the grease was from a defective cv boot. New axle was ordered.