I am reporting a serious and extremely concerning brake failure involving my 2026 Chevrolet Silverado 2500 Diesel. Traffic ahead of me began to slow down. I saw the traffic slowing and immediately began applying the brakes to slow my vehicle. Although I was pressing the brake pedal, the truck was not slowing or stopping as it should have. When I realized the vehicle was not going to stop, I pressed the brake pedal as hard as I possibly could. The brake pedal went completely down to the floor, yet the vehicle still failed to stop, resulting in a collision. I want to be very clear: I saw traffic slowing, I applied the brakes, and when the truck failed to respond properly, I applied maximum pressure to the brake pedal. Despite this, the brake pedal traveled all the way to the floor and the vehicle did not stop. Because of the seriousness of the incident and our concern regarding the braking system, we had the vehicle towed from the scene rather than driving it. This was an extremely dangerous incident involving a 2026 vehicle. A braking system that fails to respond when the driver is actively attempting to stop presents a serious safety concern and could result in severe injury or death. I am requesting that this incident be formally documented and thoroughly investigated as a potential vehicle safety defect. I also request that all relevant vehicle data, diagnostic information, braking-system data, and electronic crash data related to this incident be preserved and reviewed.