TL* THE CONTACT OWNS A 2008 GMC SIERRA 2500 HD. THE CONTACT STATED THAT WHILE THE VEHICLE WAS STATIONARY, A SECOND VEHICLE CRASHED INTO THE REAR OF THE VEHICLE CAUSING SIGNIFICANT DAMAGE. DURING THE CRASH, THE SEATBELT FAILED TO SECURE THE DRIVER AND A NECK INJURY WAS SUSTAINED. THE CAUSE OF THE FAILURE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 130,000.