I WAS GOING NORTH WHEN A VEHICLE SUDDENLY STOPPED IN FRONT OF ME. I BRAKED AS QUICKLY AS POSSIBLE, THE 2014 CHEVY SILVERADO THAT I WAS DRIVING ONLY SLOWLY CAME TO A STOP. UNFORTUNATELY, I REARENDED ANOTHER VEHICLE. THANKFULLY I HAD NOT GOTTEN UP TO THE SPEED LIMIT (30MPH) AND WAS ONLY GOING 20MPH. MY TRUCK WOULD NOT BRAKE QUICKLY. NO SCREECHING TIRES, NO BLACK MARKS ON THE ROAD. THE STOP WAS SO SLOW THAT I HAD TIME TO TURN THE STEERING WHEEL AND ONLY DAMAGE PART OF MY FRONT END. THE GRILL, BUMPER, AND HOOD WERE SMASHED IN. NO AIRBAGS CAME OUT OF THE TRUCK, AND MY ONSTAR SERVICE SENSOR DID NOT GO OFF. AFTER COLLIDING WITH THE VEHICLE MY 2014 CHEVY SHUT OFF BY ITSELF. I HAD THE BRAKE STILL DEPRESSED & PUT THE TRUCK INTO PARK. *TR