The contact owns a 2024 Jeep Wrangler. The contact stated that the manual transmission failed to operate as designed, and the vehicle intermittently hesitated while shifting gear. The contact stated there was no warning light illuminated. The vehicle was taken to a dealer who was unable to duplicate the failure or determine the cause of the failure. The dealer contacted the manufacturer about replacing the transmission under warranty; however, the manufacturer denied the request. The vehicle remained with the dealer unrepaired. The failure mileage was approximately 5,000.