2020 Chevrolet Corvette problems

Filed Jul 9, 2026 · Engine · CA

See attached document for complaint.

Filed Jun 8, 2026 · Transmission · CA · crash · 1 injury

My left rear axel/rear differential/ control arm snapped with normal driving and breaking. It is available for inspection. This mechanical failure made me loose control of my vehicle on the busy freeway and threw me across a lane into the freeway center divider. Nearly caused a pile up accident and killed me.. The dealership service department checked it in today. I filed a claim today with the manufacture but nobody looked at it yet. There were no warning lamps and i believe there is still no warning lamps

Filed May 12, 2026 · Transmission · SC

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.

Filed Jan 14, 2026 · Visibility · SC

We have a water leak that was coming in both windows and onto the floor. Since reported it the car will slow down while driving because of codes issues about the doors are not closed and it is. I feel it's due to the water leak that is coming into the car. Took the car to a Chevrolet Dealer in Columbia South Carolina and they said it was coming from the roof weather stripping. They said it wasn't a recall for the 2020 C8 Corvette corvette yet. Also called GM Customer care to see if I can get some help to get it fixed. No luck.

Filed Jan 7, 2026 · MA

The ac compressor has had to be replaced twice since new ownership ( 38k miles now) the compressor blows apart at higher rpm causing car to be towed would need to contact dealer for exact dates

Filed Jan 4, 2026 · Driver assistance, Electrical · TX

Backup camera is intermittent. I have ain’t it to the dealership 3 times and they can replicate the issue consistently. They have scan the car for codes and seen the issue in person

Filed Sep 3, 2025 · Electrical · 40,000 miles · FL

The contact's son owns a 2020 Chevrolet Corvette. The contact stated that while her son was driving 65 MPH, the oil temperature and check engine warning lights illuminated; however, the driver was able to safely drive to the destination. Upon leaving and attempting to start the vehicle, the vehicle failed to start. The vehicle was towed to the dealer, who diagnosed a failure with the main wiring harness. The vehicle was not repaired. The contact was informed that the replacement part was on a national backorder. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the federal safety agency Hotline for assistance. The failure mileage was 40,000.

Filed Jul 3, 2025 · Electrical · FL

Rear back up camera becomes unresponsive randomly, causing it to become unsafe when backing up

Filed Feb 20, 2025 · Suspension, Transmission · FL

I replaced the battery in my C8 Corvette after three years of ownership. Upon removing the plastic cover from the frunk to access the battery, I discovered the two front strut mounts. To my dismay, I noticed excessive corrosion on both strut mounts, with the left side near an AC compressor line being considerably worse. I immediately took the car to the dealership, where they took pictures and agreed it was a design defect. They submitted a warranty claim to GM, which was denied multiple times. Despite having purchased an extended warranty when I bought the car, which still shows corrosion coverage until 2026 and over 100,000 miles, both the dealership and GM refused to repair my car. I explained that if my garage-kept car, which was never driven in the rain, had such severe corrosion at only 13,703 miles, one could only imagine the condition of a daily driver with the same defect. I then began noticing videos on YouTube exposing the problem and selling aftermarket strut covers (not OEM or from a dealership). This issue poses a significant safety hazard, as a strut could eventually fail due to corrosion. At high speeds of 70 mph on the interstate, this failure could potentially endanger the driver, passengers, and other motorists. However, the dealership and GM Customer Service continue to insist that it is a maintenance issue, despite it clearly being a design flaw. I voiced my concerns about the safety implications, but they offered no explanation or comment other than reiterating that it's a maintenance issue. I warned them that when someone dies as a result of this problem, they will eventually have to pay for the strut mounts and face additional lawsuits. They informed me that the conversation was being recorded, and I hope someone with authority will listen to it. It's not a matter of if, but when these strut mounts fail, endangering the safety and lives of others on the road. respectfully [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 20, 2025 · WA

Periodically the Instrument Cluster(Speed, Tach and other gauges) goes black. When this happens you have know knowledge of any information about the vehicle speed, etc.. This lasts a variety length of times, but no longer that about 1minute. The instrument cluster then reappears, but usually will go out again in a few minutes. A message appears, "Service Instrument Cluster'" This will happens 4 or 5 times in a period of around 10 minutes then it will never happen again the rest of the current drive. This may not happen again for a couple of months of driving then it does it again.