UPDATE TO COMPLAINT 10098773. BRAKES FAILED TO STOP 2004 SUBURBAN DURING HARD STOP AT UNDER 40 MPH. LOST POWER ASSIST AND SOME STEERING CAPABILITIES. FELT LIKE THE ROTORS WERE DEFECTIVE. BRAKE PEDEL WAS FIRM BUT WOULD NOT SLOW. IMPACT @ AROUND 20MPH CAUSE OVER $10,000 DAMAGE INCLUDING A BENT FRAME. I HAD A DAVIS INSTRUMENTS CARCHIP READER RECORDING SEVERAL METRICS INCLUDING SPEED. CAR WAS NEW IN AUGUST WITH LESS THAN 8,000 MILES. I HAVE ALL THE CARCHIP LOGS FOR THIS CAR FROM AROUND THE TIME I ACQUIRED IT. HAD PROBLEMS WITH THE DEALER FROM DAY ONE DUE TO SUSPECT REPAIRS ON AN EARLIER VEHICLE WHICH HAD EMISSIONS AND TRANSMISSIONS PROBLEMS. DEALER CONVICED ME TO TRADE UP ONCE THEY REALIZED THAT THEY COULD NOT FIX THE OLD CAR AFTER MULTIPLE ATTEMPTS BETWEEN MARCH AND JULY 2004. 22 YEAR COLLISION FREE DRIVING RECORD. ELECTRICAL ENGINEER WITH 18 YEARS EXPERIENCE IN HARDWARE AND SOFTWARE INCLUDING MILITARY WEAPONS SYSTEMS, OPERATING SYSTEMS, NETWORKING AND TELECOMMUNICATIONS. I HAVE NEVER ENCOUNTERED THIS TYPE OF PROBLEM WITH ANY OTHER CAR I HAVE OWNED. CALLED GM 11/18/04. NO RESPONSE YET. MECHANIC FOUND A SERVICE BULLETIN RECALL 04V045000 - POSSIBLE HYDRO-BOOST DEFECT WHICH MATCHES THE DECRIPTION I EXPLAIN. SOME ONE NEEDS TO GET IN FRONT OF THIS ISSUE BEFORE A MORE SERIOUS ACCIDENT OCCURS. I HAVE A 2 YEAR OLD SON WHO THANKFULLY WAS NOT IN THE CAR AT THE TIME. *AK