The contact owns a 2015 Chevrolet Silverado 1500. The contact stated that while driving approximately 40-50 MPH, the driver's side curtain and front air bags, and the passenger's side curtain air bag deployed without impact. The contact stated that the front driver's side seat belt automatically retracted during the failure, but both the front driver's side and passenger's side seat belts had failed to retract manually after the failure. The contact was able to pull over to the side of the road. The air bag warning light illuminated after the failure. The contact sustained a burn on the back of the upper arm and a cut on the front of the forearm. The contact did not receive medical assistance. The contact was able to continue driving. The dealer and the manufacturer were not contacted. The vehicle was not yet diagnosed or repaired. The failure mileage was approximately 272,200.