The contact owns a 2017 Jeep Cherokee. The contact received notification of NHTSA Campaign Number: 25V011000 (Power Train); 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 not made aware of the issue. The contact stated that while driving at approximately 45 MPH, the vehicle started losing motive power. The contact depressed the accelerator pedal and the vehicle engine revved but failed to respond as needed. The contact stated that there were no warning lights illuminated. The contact stated that this was the second time the vehicle had lost motive power. The contact had taken the vehicle to a local dealer who diagnosed the vehicle and related the failure to NHTSA Campaign Number: 25V011000 (Power Train); however, the part to repair the vehicle was not yet available. The manufacturer was made aware of the failure. The failure mileage was approximately 55,000. VIN tool confirms parts not available.