Table 1 shows one common engine and engine cooling related problems of the 2023 Chevrolet Bolt Ev.
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems |
While driving at approximately 45 mph, the regenerative braking feature of the vehicle suddenly failed, and also generated a master caution light on the dashboard display. This is the second time this has happened while driving and resulted in a sudden, alarming change in vehicle dynamics. Regenerative braking is the normal operation regime of the vehicle, with the traditional mechanical-hydraulic brake pedal available for added braking, as demonstrated by the Chevrolet dealership during a test drive and confirmed with the vehicle manual. Furthermore, the vehicle will no longer shut itself off and could pose a fire risk when stored in a garage, parking deck, other vehicles, etc. These issues happened in November 2024. The car was returned to the dealer for warranty repair. Even after extensive repairs to the electrical system, the car has repeated the alarming failure mid-drive. This indicates that there is a serious problem with the electronic and poses a serious safety risk.
Twice now within three months while I was backing up as I was parking the car parallel to the curb, the car suddenly accelerated at a much faster pace and projected the car backwards. Luckily no property or individuals were hurt. It would appear that the accelerator or speed control failed at the lower speeds required when backing up to parallel park. I saw no warning lights on the dash however may have been looking back as I was parking. The dealer did not find any code to indicate a system failure. They suggested that we removed the after-market mats.
Sudden rapid acceleration of car while parking vehicle on December 20, 2023 at approximately 2:00pm. The sudden rapid acceleration caused the vehicle to jump a curb and hit the base of the light pole damaging the right front of the car. Car was towed to the dealership and is currently there. If the car had not hit the base of the light pole, the car could have continued on into a driving lane possibly striking another car or pedestrian. To date , 12/31/23, the car has not been inspected to my knowledge. There was no warning lamps or messages. While reaching down to push the park button, the engine, which is normally quiet, made a loud whirring noise and then lurched forward.
Was sitting at a stop light when I accelerated on green I felt a lurch, it felt like someone had hit me from behind. Within 15 seconds of acceleration this light came on, a car with an exclamination point on it, and said to pull over ASAP. Car would not go any faster than 30mph and luckily I was not on an interstate or major highway. I was able to pull over in a parking lot and at that time the car was disabled. I could not put it in driver or reverse and it did not want to turn off I had to open the door to turn it off. On star diagnostics said it was the electric drive unit not preforming as expected, codes p0a3f and p0a40. Car would not move and luckily it was daylight in the area I was at, at night this would have been bad as I would have feared for my safety as a female alone in a car that would not go. Car had to be towed to dealership and from the dealer "drive motor position sensor erratic. Found bulletin 19-na-220 to replace engine harness (42840881 2525c f-harness) for this concern due to improper instatallation of harness causing issues due to terminal damage".