The contact owns a 2024 Jeep Grand Cherokee. The contact stated while driving at various speeds, the vehicle was jolting forward. The check engine warning light was intermittently illuminated. The vehicle was taken to the dealer, where it was diagnosed that the transmission had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The contact was denied vehicle rental assistance. The contact had just undergone a heart surgery and was concerned for his safety. The failure mileage was approximately 12,000.