THE MULTI FUNCTION SWITCH HAS MALFUNCTIONED THIS IS A COMMON OCCURRENCE ON THESE CARS. THE MALFUNCTION OF THIS SWITCH HAS MEANT THAT THE BRAKE LIGHTS DO NOT WORK CAUSING SOMEONE TO RUN INTO THE BACK OF MY CAR AS I WAS SLOWING IN TRAFFIC. THE SHIFT LEVER LOCK WILL NOT ENGAGE LEAVING THE KEYS UNABLE TO BE REMOVED AND THE SHIFTER CAN BE MOVED OUT OF PARK WITHOUT THE BRAKE PEDAL BEING PRESSED. THE IGNITION SWITCH AND HARNESS MALFUNCTION CAUSING THE FAN TO NOT WORK IN ANYTHING BUT 5. LOOK AT THE MESSAGE BOARDS ALL THREE A COMMON OCCURRENCE AND WORSE GM KNOWS OF THESE PROBLEMS AND HAVE REFUSED TO ADDRESS THEM. *TR