2002 CHEVROLET SUBURBAN — SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP

DRIVING ON FREEWAY ALONG CARPOOL LANE WHEN THE CAR AHEAD OF US STOPPED TO MOVE TO THE NEXT LANE AND WE ALL HAD TO STOP. I HAD A GOOD DISTANCE FROM THE VEHICLE IN FRONT OF ME WHEN I HIT THE BRAKES. THE BRAKES WENT ALL THE WAY TO THE FLOOR(LITERALLY) BUT STILL DIDN'T STOP UNTIL I CRASHED INTO THE CAR IN FRONT OF ME. THE ABS BRAKES FEELS UNUSUAL. I ALSO HEAR A CLANKING SOUND ON THE DIFFERENTIAL EVERY TIME I HAVE TO DECELERATE AND GO BACK TO NORMAL SPEED OR JUST MOVING FROM "PARK" TO "REVERSE" OR FROM "NEUTRAL" TO "REVERSE". *NLM