VEHICLE WAS CUT OFF BY ANOTHER VEHICLE. HAD TO APPLY BRAKES (ABS) QUICKLY, WHICH FAILED TO WORK. VEHICLE THEN DOVE INTO CONCRETE COVER. UPON IMPACT, THE DUAL AIR BAGS FAILED TO DEPLOY. THE SEAT BELT JERKED HARD ON DRIVER, CAUSING BRUISES. GMC FILE NUMBER 99-153-17801. *AK