WE WERE DRIVING OFF H-820 N IN FORTWORTH TEXAS..THE CAR COULD NOT SLOW DOWN NOR COULD WE CONTROL IT. WE ENDED UP HITTING THE GUARD RAIL IN ONE CAR ACCIDENT AND IT WAS A TOTAL LOSS. BEFORE THAT, SAME CAR WAS SERVICED BY IGNITION PROBLEM BY CHEVROLET DEALER OFF 1-20 IN ARLINGTON,TX..STILL I WAS EXPERIENCING SAME PROBLEM. *TR