Automatic Emergency Braking problems of the 2025 Chevrolet Silverado 1500

The specific cause has not been identified. On xxx6, my 2025 Chevrolet Silverado 1500 custom lt trail boss unexpectedly rolled away while parked and unoccupied, striking another parked vehicle. The truck remains at modern Chevrolet and is available for inspection. Gm/esis opened a safety and product liability investigation and is arranging inspection/data retrieval. I parked at walmart in [xxx], shut the truck off, exited, locked it, and walked away. Shortly afterward, I heard a sound resembling the key-fob-left-inside warning. My key fob was in my pocket, so I returned and saw the truck moving with no driver. Another person and I tried to stop it. I entered through the driver’s door and pressed start/stop several times, but it would not start while moving. It continued moving and struck another parked vehicle. Vehicle dropped off on xxx and modern Chevrolet could not reproduce the incident or identify the cause. The service advisor stated it “came out of gear but don’t know why” and escalated it to gm. Gm/esis plans to retrieve sdm/airbag data, and I requested any tech ii/mdi scan data. No warning lights, messages, or chimes were observed during the incident. I did not see/hear “shift to park,” and I was able to lock the truck with the key fob outside. In a later controlled test, I left the truck in drive and shut it off. It displayed “shift to park” and sounded a warning chime. Opening the driver’s door also produced a key-fob-left-inside-type alert, which did not occur on xxx. The truck did not automatically shift to park or engage the electronic parking brake and slight movement was felt during the test. No further testing occurred by me after xxx. I have also experienced infotainment freezing after software updates and random electronic parking brake application when shutting off, and remains engaged after restart. The truck received an oil change/tire rotation at modern Chevrolet on xxx. Cause still remains unknown. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

On 3/30/2026, I was driving down the road & suddenly my dash filled with warning lights about brakes, abs etc. Steering the vehicle became almost impossible because power steering was gone. When I attempted to brake, I also found that I had very little braking. The vehicle has 11,036 miles. Got the vehicle to the dealership - capital Chevrolet from which it was purchased. It has been diagnosed as a major brake failure. Master cylinder, booster, reservoir, seals etc. Extremely dangerous situation without any early warning signs, lights or notices.