The contact owns a 2024 cadillac xt6. The contact stated that while driving at various speeds, the transmission malfunctioned, and the vehicle failed to properly accelerate. Also, while driving at an undisclosed speed, the transmission erroneously switched from the automatic mode to the manual mode and the vehicle would not remain in the proper gear. The vehicle was towed to the local dealer who diagnosed the vehicle and determined that the transmission was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 114.