I CAME UP ON AN ACCIDENT THAT WAS ALREADY HAPPENING AND HAD TO SLAM ON BRAKES. AT THAT TIME MY 2003 YUKON DENALI DID NOT STOP IN TIME AND I HIT ANOTHER CAR GOING AT LEAST 45 MILES AN HOUR IN THE REAR. MY WHOLE FRONT END WAS SMASHED IN AND THE PASSENGER HIT THE DASH BUT MY AIRBAGS DID NOT DEPLOY AND THE ONSTAR STOPPED WORKING. *TR