The contact owns a 2014 Chevrolet Silverado 2500. The contact stated while driving at 45-49 MPH, with cruise control mode, he sustained a seizure and became unconscious. The vehicle veered off the road, drove over a curb and landed into a 6-foot ditch. The vehicle then drove over three driveways and crashed into a tree while the contact was unconscious. The air bags failed to deploy. There was no further information provided. The contact stated that the incident occurred within 175 yards. The contact was transported out of the vehicle and to the hospital by emergency units. The contact sustained a broken sternum caused by the seat belt. The contact was unsure whether a police report was filed. The vehicle was towed to a body shop; however it was not repaired. An unknown dealer was notified of the failure and contacted the manufacturer. The vehicle was not diagnosed or repaired. The contact referenced NHTSA Campaign Number: 21V054000 (Air Bags).The manufacturer contacted the contact and advised him that the issue would be submitted to another claim department. The contact was awaiting a call back from the manufacturer. The failure mileage was approximately 233,000.