2025 Chevrolet Blazer Brakes Problems

Failed Component: Service Brakes, Hydraulic / Electronic Brake Control Module (EBCM) / Automatic Emergency Braking (AEB) Description of Incident & Safety Defect: On June 11, 2026, while operating the vehicle, the primary braking system suffered a complete failure of electro-hydraulic power assist. When attempting to slow down, the electronic brake system failed to engage or command hydraulic assist. The brake pedal became extremely hard and stiff to press, rendering the hydraulic braking system completely ineffective. Simultaneously, the vehicle’s integrated Automatic Emergency Braking (AEB) system failed to activate or provide secondary collision mitigation, resulting in a crash with the vehicle ahead. Technical & Telemetry Evidence: An official Bosch Crash Data Retrieval (CDR) report (dated July 29, 2026) confirmed that during the incident, the brake pedal was physically depressed to 16% pedal travel/movement, yet the hydraulic line pressure registered at 0 kPa. This electronic telemetry proves that despite driver pedal application, the Electronic Brake Control Module (EBCM) never engaged hydraulic pressure or commanded stopping authority. Post-Incident & Out-of-Service Timeline: The vehicle was surrendered to an authorized dealership (Classic Chevrolet, Grapevine, TX) following the crash and has remained continuously out of service in dealer custody since June 14, 2026. General Motors Product Assistance Claims (PAC Case #102143673) closed their investigation on September 2, 2026, performing $0.00 in repairs and issuing a complete denial of assistance. The vehicle remains completely unrepaired, unsafe to drive, held in dealer custody, and subject to an active Texas DMV Lemon Law filing.

NHTSA ID

11770731

Incident

Jun 11, 2026

Was driving on highway and parking break light flashed on - break was not on. Tried to turn off and couldn't - car still driving. Then all these alerts started coming up "break failure", "no AWD" "Break failure cannot accelerate past certain speed". I tried to pull over the stop the car and no breaks would work including parking break. Eventually rolled to a stop without hitting anything. Car under warranty with 11,000 miles, called dealership who had lack of concern for urgency of the issue. This put not only myself and child but also many other drivers on the highway during rush hour. Very concerning and lack of response from dealership even more concerning.

NHTSA ID

11769285

Incident

Oct 6, 2026

I am concerned about a significant safety issue with my 2025 Chevrolet Blazer EV. On at least four separate occasions, the vehicle has unexpectedly applied extremely hard Rear Automatic Braking while I was backing up, despite there being no object, vehicle, person, or obstacle behind the vehicle. The braking is so abrupt and forceful that it feels as though the vehicle has collided with something. Because the driver is typically looking over their shoulder while reversing, the sudden stop causes a violent jolt. This has resulted in neck pain and headaches for me and my son on multiple occasions. One of these incidents also occurred while my son was driving the vehicle. We discussed the event afterward and both experienced the same sudden, aggressive braking with nothing present behind the vehicle. The system appears to be activating falsely. This is a serious safety concern. The unexpected braking could potentially cause injury to the driver or passengers and may also create a hazardous situation if another vehicle is following behind. I am requesting that this issue be investigated and repaired as soon as possible.

NHTSA ID

11763996

Incident

Jan 17, 2026

The vehicle accelerated without input and the brakes failed to respond. I am notifying you that this vehicle is a life-threatening safety risk and should not be rented again until a master technician clears the electronic throttle control and breaking system. This condition presents a serious safety risk and could lead to a car crash or injury. Additionally, the vehicles, climate control system behaved erratically, alternating between extremely hot and extremely cold air without adjustment. This may indicate a broader electronic or system malfunction affecting vehicle city.

NHTSA ID

11726743

Incident

Mar 23, 2026

On two separate occasions the vehicle lost all power while driving. On December 5, 2025 turning on to a main road from parking lot the vehicle shut off with no prior warning lights. Shifted vehicle to park. No power to anything, unable to unlock doors, unable to turn on hazard flashers, stuck in the middle of the road at night. Waited a minute and pressed the start button and vehicle started with no problem. Again, on February 24 , 2026 making a left turn in intersection, without any warning the vehicle shut off… no power at all. Stuck in middle of road with no lights , no hazard flashers ,unable to get out of the car. Few minutes later vehicle started again. The vehicle did not stall while stopped, it completely lost power while moving. Reported problem to West Herr Chevrolet of Hamburg NY , brought vehicle in to dealership on February 25, 2026 and they were “unable to duplicate the concerns” The dealership paperwork states that the vehicle stalled while stopped, this vehicle lost all power while it was moving. We now have the vehicle back in our possession but are extremely concerned for our safety and the safety of others.

NHTSA ID

11720946

Incident

Feb 24, 2026

The contact owns a 2025 Chevrolet Blazer. The contact received notification of NHTSA Campaign Number: 25V433000 (PARKING BRAKE). The contact stated that while driving 35 MPH, the vehicle vibrated abnormally. The contact exited the freeway and the front passenger’s side tie rod detached from the vehicle and the vehicle lost power steering functionality. The contact was able to pull over to the curb. No warning lights were illuminated. The vehicle was inspected the contact noticed that the front passenger’s side wheel was bent and the tire was deflated. The vehicle was towed to the residence. The vehicle was not taken to the dealer or an independent mechanic. The vehicle remained at the residence unrepaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 22,000.

NHTSA ID

11714258

Incident

Jan 8, 2026

Mileage

22,000 mi

On December 22, 2025, I purchased a brand-new Chevrolet Blazer EV SS from a dealership located approximately 1 hour and 10 minutes away from my home. Immediately after leaving the dealership lot, I noticed a grinding / grunting noise coming from the vehicle. This was not a minor rattle or normal “new car” sound—this was an alarming mechanical noise in a vehicle that had just been sold to me as new. Because the selling dealer is so far away, and because I was concerned about driving a potentially unsafe vehicle long distance, I took it to a closer Chevrolet dealer for evaluation. I first brought the vehicle to Ciocca Chevrolet in West Chester, PA. After assessing the issue, they advised me to open a ticket with General Motors (GM) because they believed there was a legitimate defect that required GM involvement. Shortly after that, I left for the Christmas holidays, but the issue did not go away and I remained extremely concerned that I had just bought a defective vehicle. When I returned, I took the Blazer EV to Del Chevrolet in Paoli, PA for a second opinion and a thorough evaluation. After keeping the car and spending an entire day assessing it, Del Chevrolet acknowledged the problem. Despite two separate dealers identifying and acknowledging the issue, I have been unable to get timely action toward a repair. I have been told that GM is requiring additional testing and, most importantly, that GM is not authorizing Del Chevrolet to order the necessary parts. The dealership has indicated they are essentially stuck waiting for GM approval, which means my brand-new vehicle is in limbo with no clear repair timeline. As of now, the vehicle has only about 140 miles on it. This is a brand-new car that developed a serious noise immediately upon delivery, and I have now been forced into a loaner vehicle. It is Jan 17th. The vehicle is still at Del Chevrolet service center. Del Chevrolet, Fred Beans Chevrolet and GM corporate are involved in resolving this issue.

NHTSA ID

11711601

Incident

Dec 22, 2025

The contact owns a 2025 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 had stopped driving the vehicle due to safety concerns. 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.

NHTSA ID

11709693

Incident

Jan 8, 2026