The contact owns a 2017 GMC Acadia. The contact stated while attempting to shift into park(P), the vehicle failed to turn off, with the ‘Shift to Park’ message displayed on the instrument panel. The contact stated that after several attempts, the vehicle eventually turned off. The dealer was notified of the failure and informed the contact that the vehicle was not included in NHTSA Campaign Number: 17V516000 (POWER TRAIN). The vehicle was not repaired and remained with the dealer. The manufacturer was not notified of the failure. The failure mileage was unknown.