I WAS EXITING A PARKING LOT MAKING A RIGHT HAND TURN FROM A DEAD STOP. I GRADUALLY PRESSED THE ACCELERATOR WHEN WITHOUT WARNING THE VEHICLE BEGAN TO ACCELERATE UNCONTROLLABLY. I PRESSED THE BRAKE PEDAL AS HARD AS POSSIBLE, HOWEVER THE POWER OF THE MOTOR WAS TOO MUCH FOR THE BRAKES TO OVER COME. THE FRONT BRAKES LOCKED UP AND I WAS NO LONGER ABLE TO STEER THE VEHICLE. DURING THIS EVENT I WAS BAFFLED, IT TOOK A MINUTE TO GRASP THE FACT THAT TRUCK WAS ACCELERATING ON ITS OWN. THE VEHICLE CRASHED INTO A GUARD RAIL AT APPROXIMATELY 15-20 MPH WHERE IT CONTINUED TO ACCELERATE UNTIL I TURNED OFF THE IGNITION. I CONTACTED CHRYSLER WHO CAME OUT AND TOWED THE VEHICLE TO THEIR SHOP. I AM CURRENTLY WAITING A RESPONSE FROM THE MANUFACTURER. *TR