Service Brakes Problems of Chevrolet Bolt Ev - part 2

There is an intermittent rapid tapping noise coming from the brake booster upon opening a door, or releasing the brake pedal (standing still or while in motion), or unplugging the power cord. The behavior is more frequent on colder days. This tapping noise typically continues for nearly a minute. Tapping the brake pedal causes the noise to cease momentarily. Very slight movement on the brake pedal can sometimes stop the tapping. This behavior began more than a year ago. I took the car to the Chevrolet dealer and was told a firmware update would be provided in q1 2021. I am concerned the behavior may be an early warning sign of brake system failure, which could occur while driving.

See all problems of the 2017 Chevrolet Bolt Ev 🔎.

Tl- the contact owns a 2020 Chevrolet volt. The contact stated the vehicle was in "l" mode before the vehicle lunged foward into the wall. "l" mode is progressive mode to save battery usage. The failure occurred Jan 29, 2020. Approximate failure mileage 500. Bh VIN tool confirms 0 unrepaired recalls heritage Chevrolet owing mills (11234 reisterstown rd, owings mills, MD 21117) heritage Chevrolet Buick owings mills VIN: 1g1fy6s04l4107643 VIN tool confirms 0 unrepaired recalls heritage Chevrolet owing mills (11234 reisterstown rd, owings mills, MD 21117) heritage Chevrolet Buick owings mills VIN: 1g1fy6s04l4107643.

See all problems of the 2020 Chevrolet Bolt Ev 🔎.

Braking failures. After driving the vehicle for a few miles with normal operation of the regenerative braking system, the car was in motion (about 45 mph) when the car's regenerative braking system was requested by completely removing the foot from the accelerator in "l" mode (the "one foot driving" mode that automatically brakes as less pressure is applied to the accelerator). The car continued to move forward at full speed toward a red traffic light at a normally busy intersection. At that point I validated that the car was in "l" mode and decided to use the regenerative brake paddle connected to the steering wheel. That also failed to engage, and the car continued at full speed toward to the red light. At that point I engaged the brake pedal briskly and barely came to a stop before entering the intersection. Nearly the exact same problem happened a second time on the drive back about 5 minutes into the drive, and after the car had been resting about 30 minutes. The car gave no notifications or warnings of anything abnormal. Many drivers of the chevy bolt rely on the regenerative braking system nearly exclusively for all braking scenarios. Because of this, any failure can result in an extreme hazard to the driver and nearby pedestrians or vehicles. When contacting gm, they said that under some conditions the regenerative braking system will not engage. They will not investigate or fix the issue.

See all problems of the 2019 Chevrolet Bolt Ev 🔎.

The Bolt Ev has a steering-wheel mounted regenerative breaking paddle, which applies the regenerative breaking, slowing the vehicle. However, when the battery is fully charged, this paddle does nothing, which has resulted in some near misses. A warning indicator should be present, or the documentation should suggest enabling "hilltop reserve" to prevent this from occurring. I have reported this to chevy, but no responses were received.

See all problems of the 2018 Chevrolet Bolt Ev 🔎.

On a somewhat crowded freeway on ramp, started to accelerate when cars ahead stopped. Fully depressing the brake pedal did not apply maximum braking power. The car slowed but did not stop before colliding with the car in front, despite the fact that there was plenty of room between us for the speed we were going. Later experiments showed that applying the left hand brake control together with the brake pedal applied significantly more braking power and would have stopped the car well short of the collision. Fully depressing the brake pedal should apply maximum braking power, and the hand brake control should not be needed to stop the car as quickly as possible in an emergency situation. I consider this a safety issue, for all drivers whose instinct is to press fully on the pedal, but more importantly for any driver who cannot use the left hand brake due to a disability that otherwise would not impair their ability to drive.

2017 Chevrolet bolt. Consumer writes in regards to regeneration during braking feature.

3 times in the first1500 miles small stones have become lodged in the breaking, in both front wheels and never I the back wheels. There is a design defect that allows stones to enter between the backing plate and the rotor. The become stuck (lodged) there and, in addition to creating a loud screeching noise, could impair braking and steering, creating a safety hazard. All this happens when the car is moving.

The contact owns a 2017 Chevrolet bolt. While operating the vehicle, a loud howling type noise was present coming from the front end of the vehicle. The vehicle was taken to the dealer (banks Chevrolet in concord, nh) who discovered that small stones had become stuck into the braking system between the backing plate and the rotor. The stones were removed and the failure was remedied, but the failure recurred on three separate occasions on both the front driver and passenger side brakes. The manufacturer was notified of the failure. The failure mileage was 1,500. Updated 8/2/jb.

In sept 2020, gm issued service bulletin 20-na-170 regarding rapid popping or clicking noises coming from the I-booster hardware under the hood in the bolt braking system. Earlier fixes for this issue involved replacing the I-booster hardware, but that didn't solve the problem. The new fix called for a software update to the brake booster control module. The bulletin states: "correction -- do not replace the I-booster assembly. Update the brake booster control module with the latest software. " what happens to the brake system if the software update is not applied? does the I-booster hardware eventually fail because of the 1000's of unnecessary use cycles, and then what happens? why hasn't a recall been issued for this possible safety issue caused by a software defect?.