The contact owns a 2018 Ford F-550. The contact stated while the vehicle was parked, the contact stated that the frame was cracked between the bed and the cab. There were no warning lights illuminated. The vehicle was taken to a dealer where it was confirmed that the vehicle was previously repaired under a related unknown recall and declined to perform the recall repair on a second occasion. The dealer determined that the frame needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was not made aware of the failure. The failure mileage was approximately 73,000.