The contact owns a 2017 Cadillac ATS. The contact stated that the vehicle was experiencing intermittent loss of power steering functionality. The vehicle was taken to Auto Repair Garage, where a routine inspection was performed, and the contact was informed that no failure was found. The contact stated that the failure progressively increased. The contact stated that upon starting the vehicle, and while driving at various speeds, the vehicle lost power steering functionality, and the steering wheel was significantly difficult to turn. There was no warning light illuminated. Additionally, the contact stated that the infotainment system screen was frozen. The dealer was notified of the failure and informed the contact that the VIN was not included in NHTSA Campaign Number: 25V175000 (Steering). An appointment was scheduled for a diagnostic test. The manufacturer was notified of the failure and informed the contact that the VIN was not included in the recall. The failure mileage was unknown.