The contact owns a 2023 GMC Yukon. The contact stated that while driving 40 MPH, the vehicle lost motive power. In addition, the contact attempted to restart the vehicle; however, the vehicle failed to immediately restart. The contact stated that after several attempts, the vehicle restarted. The vehicle was driven to the shoulder of the road. The vehicle was then towed to the dealer; however, the failure was not duplicated. The contact stated that previously, the failure had occurred, and the vehicle was taken to the dealer. The dealer updated an unknown software. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure and a case was filed. The failure mileage was 16,855. VIN tool confirms parts not available.