AI Damage2020 Chevrolet Corvette: common problems
Owners of the 2020 Chevrolet Corvette filed 34 complaints with NHTSA, most often about structure and powertrain. The maker issued 904 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 34
- involving a crash
- 1
- Technical service bulletins (TSB)
- 904
What fails most often
- 1 Structure 29% of all complaints
- 2 Powertrain 18% of all complaints
- 3 Engine 12% of all complaints
- 4 Visibility 12% of all complaints
- 5 Electrical system 9% of all complaints
- 6 Service brakes 9% of all complaints
- 7 Suspension 6% of all complaints
- 8 Engine and cooling 3% of all complaints
- Structure: 10 complaints (29% of all); manufacturer bulletins for this component: 61.
- Powertrain: 6 complaints (18% of all), 1 of them with a crash reported by the owner; manufacturer bulletins for this component: 130.
- Engine: 4 complaints (12% of all); manufacturer bulletins for this component: 72.
- Visibility: 4 complaints (12% of all); manufacturer bulletins for this component: 20.
- Electrical system: 3 complaints (9% of all); manufacturer bulletins for this component: 222.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 6.2 L · petrol · 8 cyl
- automatic, 8-speed
Drive: RWD
Symptoms owners describe
How many of the 34 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Structure | 10 | 0 | 61 |
| Powertrain | 6 | 1 | 130 |
| Engine | 4 | 0 | 72 |
| Visibility | 4 | 0 | 20 |
| Electrical system | 3 | 0 | 222 |
| Service brakes | 3 | 0 | 44 |
| Suspension | 2 | 0 | 32 |
| Engine and cooling | 1 | 0 | 125 |
| Wheels | 1 | 0 | 52 |
| Exterior lighting | 1 | 0 | 16 |
| Backover prevention | 1 | 0 | 14 |
| Fuel/propulsion system | 1 | 0 | 6 |
| Equipment | 0 | 0 | 254 |
| Fuel system | 0 | 0 | 24 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
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.
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.
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
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.
Rear back up camera becomes unresponsive randomly, causing it to become unsafe when backing up
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.
The contact stated that the light turned green, the accelerator pedal was depressed, and the vehicle started jerking with a rumbling sound coming from the engine compartment.
2020 chevrolet corvette stingray. Consumer writes in regard to rusting shock tower housing.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 1,029 of 2,102 model years in the NHTSA data (top 49% most complained about).
On average one model year of the Corvette has 68 complaints (10 years in the data). This year has 34, below average.
What to check before buying
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it
- This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance
- Certain vehicles listed above may have a condition in which drivers may not be notified of a rear…
Certain vehicles listed above may have a condition in which drivers may not be notified of a rear turn-signal lamp failure. GM will update software calibrations in the vehicle’s exterior lighting control module. For…
- PI to help diagnose A/C concern
- This Preliminary information communicates to dealership technicians that if they encounter a customer…
This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with this concern, to perform the steps listed and should be able to reprogram the module and correct this.
- This preliminary information communicates information about how to determine if a wheel and tires size…
- This Preliminary information communicates that characterizing certain parts is no longer required, the…
This Preliminary information communicates that characterizing certain parts is no longer required, the service instruction was changed but technicians are still trying to perform the function causing further confusion.
- This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a…
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
- This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic…
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
- This PI provides diagnostics tips to dealership techs when trying to diagnose a CAN Bus communication…
This PI provides diagnostics tips to dealership techs when trying to diagnose a CAN Bus communication issue after an event like a lightning strike, battery jump started backwards, failure over the air update, etc.
- This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered…
This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
- This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic…
NHTSA lists 904 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2020 Chevrolet Corvette?
Owner complaints to NHTSA most often mention: structure, powertrain, engine. Total complaints: 34. The most frequent symptoms in complaint texts: warning lights, check engine (12%), A/C or heater (6%), jerking, harsh shifts (6%).
How many service bulletins (TSB) were issued for the 2020 Chevrolet Corvette?
NHTSA lists 904 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2020 Chevrolet Corvette from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2020 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.