Monday, June 21, 2021
News 2020 C8 Chevrolet Corvette Experiencing Check Engine Light Warnings

2020 C8 Chevrolet Corvette Experiencing Check Engine Light Warnings

The cause of the new Chevy Corvette’s warning is known by GM and they’re working on a fix

  • The amber glow comes with a warning: “Reduced Engine Power.”

  • The issue is limited to some 2020 Corvettes.

  • The bug is apparently only software-based.

Nobody wants to see the feared and nightmare-inducing “Check Engine Light” glow in their car. This is all the more true when the car is new and especially terrible if you waited months and months to get your all-new C8 Chevrolet Corvette.

Unpleasant as this may be for anyone, C8 Corvette owners have also had to deal with a follow-up message from the car that says: “Reduced Engine Power.” As reported by Carbuzz, this was enough for one C8 owner to consider ditching the car for fear of an accident.

2020 Chevrolet Corvette Stingray | Photo: Chevrolet

The good news is that GM’s been aware of the issue for a while and is actively on a fix. The bug appears to be nothing more than software-based and to address it, GM technicians will perform a number of software refreshes. The service bulletin related to the issue clearly states that “These conditions are not a performance issue with the TCM or transmission assembly” meaning that there’s physically nothing wrong with the car.

Thankfully, there have been no reports of C8 Corvettes actually suffering power losses or related incidents.

2020 Chevrolet Corvette Stingray | Photo: Chevrolet

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Matt St-Pierre
Matt St-Pierre
Trained as an Automotive Technician, Matt has two decades of automotive journalism under his belt. He’s done TV, radio, print and this thing called the internet. He’s an avid collector of many 4-wheeled things, all of them under 1,500 kg, holds a recently expired racing license and is a father of two. Life is beautiful. Send Matt an emai


  1. Your vehicle’s check engine light is at the forefront to alert you to impending vehicle problems. If yours lights up, call your mechanic so that they may diagnose the problem. It could be a minor problem that can be put off until later. but it could also be an alert to a big, costly problem that needs remedied now.

  2. I am so thankful for my car’s check engine light! One day I was driving along and my CEL lit up. I pulled over to consult my owner’s manual. It said to restart my car to see if it came back on…and it did. I called my mechanic and he allowed me to come right over. After he performed a code reading, he informed me that it was a good thing I had come right in or the damage would have been much worse.

  3. If you are a fan of a certain comedy sitcom that is about 4 male scientists and their blonde haired neighbor lady, you have probably heard references to the neighbor lady’s car. Whenever she drives one of the men to work, he always makes remarks about her check engine light being on. She makes dismissive comments and ignores it. Most of us know that this is a very bad idea. Your car’s check engine light is there for a reason…to let you know there is an issue within the vehicle.

  4. Your vehicle’s check engine light is a handy little gizmo. The main job for this little illuminated feature on your vehicle’s dashboard is to alert you to potential problems within your vehicle’s systems. If you ever notice the check engine light begin to glow, consult your car’s owner’s manual for steps to take. The most likely suggestion will be to take your car in to the mechanic as soon as possible.


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