Differential Unit problems of the 2024 GMC Sierra 1500

The contact owns a 2024 GMC Sierra 1500. The contact stated that while driving approximately 65 mph, the vehicle rolled over a bump in the highway, and the message to "slow down" was displayed on the instrument cluster. The contact heard an abnormal metal-on-metal sound coming from the vehicle. The contact had taken the vehicle to a local dealer who diagnosed the vehicle and determined that the supports for the differential and the rear axles had been improperly attached and had become loose. The contact had asked the dealer if the repair could be covered under warranty, and was advised that the repairs were not covered. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 48,000.