Tl* the contact owns a 2008 gmc yukon. while driving at approximately 25 mph and approaching a stop sign, the brake pedal was depressed but the vehicle did not stop. the accelerator pedal was depressed, but the vehicle did not accelerate. another vehicle crashed into the front passenger of the contact's vehicle. the air bags did not deploy. the contact suffered a concussion and the pregnant front passenger sustained back injuries and received medical attention. a police report was filed. the vehicle was towed to an independent mechanic where it was not diagnosed or repaired. the manufacturer was not made aware of the failure. the failure mileage was approximately 100,000.