Probable power brake booster failure, in a panic stop attempt when another motorist ran a red light the vehicle brake pedal became very hard and did not want to stop the vehicle. Other instances include spongy and soft pedal going to the floor with very poor braking. This vehicle was included in FoMoCo Customer Satisfaction Program 13N02 but did not exhibit these symptoms until just recently. These are the exact symptoms covered by the program but time and mileage has expired for this build date even though later models are still covered.