The contact owns a 2015 GMC Yukon. The contact stated that while driving at 40 MPH, the rear brakes became inoperable, causing the steering wheel to seize, with no warning lights illuminated. Due to the failure, the vehicle crashed into a tree. The contact and the contactâs child sustained injuries and were transported to a local emergency room for medical treatment. The contact suffered a broken nose and a chest fracture. The contactâs child sustained a broken leg due to deployment of the passenger-side air bag. The contact stated that the air bags deployed during the crash; however, the driverâs air bag failed to deploy. A police report was filed. The vehicle was towed to the contactâs residence. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was not available.