2025 Chevrolet Blazer

The contact leased a 2025 Chevrolet Blazer. The contact stated that while in drive(D) or reverse(R), the parking brake independently engaged. An audible chime sounded, erroneously detecting nearby objects. The vehicle was taken to a local dealer. The manufacturer was made aware of the failure by telephone. The failure mileage was approximately 107,000.

NHTSA ID

11774071

Incident

Apr 15, 2026

Mileage

107,000 mi

Driving this vehicle in cruise control at around 70-80 mph, on an empty freeway early in the morning. No traffic but suddenly and for no reason the collision prevention system activated causing the steering wheel to turn all the way to the right and locking in place, the brakes activating, and leaving me no control sending me and two passengers in an embankment and the car on its passenger side.

NHTSA ID

11772116

Incident

Oct 18, 2026

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

Headlights Daytime running lights only 50% ? no back up lights no Brites, windshield wash not working then on going 6 dealer trips 9 days in shop for info screen / GPS,Radio&Phone

NHTSA ID

11770456

Incident

Jan 16, 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

The contact owns a 2025 Chevrolet Blazer. The contact stated that the vehicle experienced repeated phantom braking while driving at various speeds. The contact stated that the automatic emergency braking system activated erroneously. The automatic emergency braking system was deactivated to prevent the failure; however, after a software update at the dealer during a radio repair, the feature automatically activated. After the update, the phantom braking reoccurred on several occasions. The contact had successfully disabled the feature again but remained concerned that the system might activate unexpectedly while turned off. The failure mileage was approximately 10,000.

NHTSA ID

11765777

Incident

Sep 7, 2026

Mileage

10,000 mi

What component or system failed or malfunctioned, and is it available for inspection upon request? On September 12, 2026, while parked at the top level of a parking garage, the vehicle unexpectedly began rolling forward after being parked and exited. The vehicle subsequently struck a concrete wall. The vehicle is available for inspection upon request. How was your safety or the safety of others put at risk? On September 12, 2026, my son parked the vehicle on the top level of a parking garage. He exited the vehicle while I remained seated in the rear seat and his girlfriend remained in the front passenger seat. I later moved to the driver's seat to speak with her. As I exited the vehicle to meet my son, the vehicle unexpectedly started rolling forward on its own. Nothing was touched or intentionally activated prior to the vehicle moving. Because the vehicle began moving while I was exiting, I fell and suffered injuries including a scraped knee, swelling and injury to my foot, pain in my hands, and abrasions on my arm. The vehicle continued rolling and struck a concrete wall, causing damage to the front of the vehicle. The unexpected vehicle movement placed me, the passenger, and other nearby individuals at risk of serious injury. Has the problem been reproduced or confirmed by a dealer or independent service center? I am reporting these incidents for investigation. The vehicle is available for inspection by Chevrolet, the dealer, NHTSA investigators, insurance representatives, or other authorized parties. No warning lamps, messages, or other alerts were observed prior to the Rear Automatic Braking events or the vehicle roll-away incident. The braking events and vehicle movement occurred unexpectedly and without warning. I no longer feel safe operating this vehicle. Between the multiple false activations of the Rear Automatic Braking system and the incident on September 12, 2026, where the vehicle unexpectedly rolled forward and caused injury

NHTSA ID

11764016

Incident

Sep 12, 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

This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3

• Fixes to help prevent loss of audio • Better connectivity for Bluetooth and CarPlay

PI created to guide technicians through radio restriction process

Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator.

This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.

This Preliminary information communicates to dealers a procedure to reset the radio.