The contact owns a 2019 Chevrolet Silverado 1500. The contact stated while driving 30 MPH, the brake pedal was depressed and failed to respond. There was a message displayed that the vehicle may be stopped. The contact turned on the hazard lights, and the brake pedal traveled to the floorboard. The contact was able to stop the vehicle at the red light; however, the vehicle was unable to restart. The vehicle was towed to the residence. The vehicle was not taken or towed to be diagnosed. On another occasion, the transmission failed, and the vehicle was repaired. The vehicle was not repaired after the most recent failure. The dealer was not made aware of the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 49,000.