Car Will Not Accelerate problems of the 2014 Buick Enclave

Tl-the contact owns a 2014 Buick Enclave. The contact stated that while driving at approximately 45 mph, the vehicle jerked and the check engine warning light illuminated. The vehicle failed to accelerate after multiple attempts. The vehicle was taken to the dealer where it was diagnosed that there was a misfire code. The vehicle was not repaired. The contact received a notification of NHTSA campaign number: 14v614000 (electrical system) however, the part to do the repair was unavailable. The manufacturer was notified of the failure. The failure mileage was 14,000. Djr.