2024 Chevrolet Blazer EV Brake Problems

Mileage when the problem started

Owner reports

Selected complaints filed with NHTSA by 2024 Chevrolet Blazer EV owners, lightly cleaned up (personal details are redacted by NHTSA).

The contact owns a 2024 Chevrolet Blazer EV. The contact stated that while his wife was driving approximately 15-20 MPH and pulling into the driveway, the brake pedal was depressed, but the vehicle failed to respond. The vehicle entered the garage, and struck equipment along with the garage wall, causing structural damage. The contact stated that the front driver's side air bag failed to deploy and the Forward Collision Avoidance system failed to engage as expected. The vehicle was towed to the dealer, where the contact was informed that no braking system failure was found; however, the contact believed that the failure was not identified because the system had rebooted prior to arrival at the dealer. The vehicle was in the process of being repaired at the dealer's body service center. The contact associated the failure with NHTSA Action Number: EA26006 (Service Brakes). …

The contact owns a 2024 Chevrolet Blazer. The contact received a notification of NHTSA Campaign Number: 25V433000 (Parking Brake); however, the part to do the recall repair was not yet available. The contact stated that while reversing at 5 MPH, the rear parking brake independently engaged. No warning lights illuminated. In addition, the contact stated that while driving at 20 MPH, the vehicle had jerked with a sudden acceleration before the rear brakes had independently locked. Injuries were sustained. The contact sought medical attention for injuries sustained to his back, neck, and spine. The front passenger sought medical attention for whiplash and head injuries. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The failure occurred on several occasions. The manufacturer was not made aware of the failure. The failure mileage was approximately 28,989.

My son was driving in stop and go traffic on I-95 and he rear-ended another car. No safety features activated: i.e. dash warning lights, audible noise, auto breaking. Last week I was at teh dealer for the recall that effected the Emergency Breaking system. Talking with the dealer some updated turns the auto system off, or otherwise adjust the settings that I have prior. Backing out of the driveway the car lock up the breaks when it sees my trash can, but not on the highway? The dash warning lights randomly light up with nothing in front of me. I know the system does not prevent every accident, but it seems to pick and chose what it warns about. It is more a hazard then a help in its present state.

I am reporting a potential safety defect involving unintended automatic emergency braking/forward collision warning/brake-control behavior, reverse automatic braking, parking brake behavior, and driver-assistance/sensor calibration. Incident [redacted] ~11:15 AM, [redacted] driving 2024 Chevrolet Blazer EV ~20-25 mph on/near [redacted]. Vehicle displayed red collision alert and abruptly braked hard although the lane was clear; only a car was parked in a driveway on the right. Sudden braking created serious risk of rear-end collision/loss of control. Vehicle used for family transportation; toddler (~30.8 lb) had been in vehicle ~10 minutes before and family includes blind/visually impaired passenger. …

The contact owns a 2024 Chevrolet Blazer. The contact stated that while driving at various speeds, the vehicle independently came to an abrupt stop, with the "Service Parking Brake" message displayed on the instrument panel. The vehicle was taken to a dealer, where an attempt to duplicate the failure was unsuccessful. The contact was informed that the failure was likely a user error and that no issues were found with the vehicle. The failure persisted, and the contact then received notification of NHTSA Campaign Number: 25V433000 (PARKING BRAKE); which the contact linked to the failure. The vehicle was taken back to a dealer for the recall repair. The contact stated that the repair involved the installation of an anti-abrasive tape around the wiring harness. The manufacturer was notified of the failure, and a representative was sent to inspect the vehicle. …

I have had the car for 3 weeks and twice it has slammed on the brakes for an instant at slow speed. Both times I was at least 20 feet behind another vehicle travelling at less than 10mph when the brakes locked up for an instant throwing me against the seatbelt very hard and bringing me to an emergency stop. The first time the stop was so hard I thought the car behind me had hit me but it had not. I thought maybe it was the emergency braking but there was no alert or warning as there usually is when the car warns me of possible collision. The last time I contacted OnStar and asked the run a diagnostic which they said came back with no errors. I have not taken the car to the dealer since i cannot reproduce the problem.

The contact owns a 2024 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, the vehicle abruptly came to a complete stop, after which the contact became aware that the parking brake had been engaged. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V433000 (Parking Brake); the VIN was included, but parts were not yet available. The manufacturer was not notified of the failure. The failure mileage was unknown.

While this vehicle was in motion the brakes suddenly stopped working. The brake pedal went to the floor with no braking. The screen read brake assist failure. Safety was at risk due to being unable to stop the vehicle until it slowed itself down. This could have resulted in a fatality. The vehicle is available for inspection upon request. The vehicle was towed to the dealership today and no answers have been provided. There were no symptoms or signs prior to the total brake failure. Other messages on screen read: one pedal driving disabled, parking brake disabled, rear parking assist disabled.

I am not comfortable with this car, I took this car to the dealership to get fixed and checked on recalls but they could not fix the most important and most dangerous recall. They worked on recall#N252492430 and recall #N242468490 from [redacted] # [redacted] . When I got there, no one gave me an update of the car they only gave me a receipt with 3 pieces of paper and that is it. What can i do in this case? I can not drive this car knowing the brakes will go out and I might have an accident and crash.

The contact owns a 2024 Chevrolet Blazer. The contact received notification of NHTSA Campaign Number: 25V433000 (Parking Brake); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

Related recalls

NHTSA investigations

Brake complaints in other Blazer EV years