NHTSA Complaint #10157450 — 1997 CHEVROLET SUBURBAN

I HAVE LOST STEERING AND BRAKING ON 1996 6.5 TURBO DIESEL SUBURBAN THREE TIMES NOW I DRIVE NORMALLY. I AM 42 AND HAVE A FAMILY OF SEVEN. WHEN BRAKING THE POWER BOOSTER HAS ZERO PRESSURE AND IT IS VERY HARD TO STOP AND AT THE VERY SAME TIME ALL POWER STEERING IS LOST. I THOUGHT THE POWER STEERING PUMP FAILED, SO I REPLACED IT, NO CHANGE. STILL NO POWER BRAKES OR STEERING. I REPLACED HYDROBOOST UNIT BRAKING AND STEERING RETURNED. I HAVE HAD TO REPLACE HYDROBOOST THREE TIMES IN 8 MONTHS. I COMPLETELY REMOVED THE SOLENOID MAGNET FROM THE POWER STEERING PUMP TO TEST IF THE POWER STEERING PUMP CAUSES THE HYDRO BOOST UNIT TO FAIL, I DID THIS BETWEEN HYDRO UNIT 1 AN 2, I REINSTALLED MAGNET BETWEEN UNIT 2 AND 3 THE FIRST TIME I LOST BRAKING AND STEERING THERE WAS NO WARNING, I WENT TO STOP AND HAD HARD, NON POWER BRAKES AND NO POWER STEERING. THE SECOND, THIRD TIME I KNEW TO REPLACE THE HYDROBOOST UNIT, WHEN BRAKING AND TURNING THE STEERING GETS HARD OR THE BRAKES GET HARD, THEN I REPLACE THE HYDROBOOST UNIT, BRAKE AND STEERING RETURN TO NORMAL I COMPLETELY FLUSHED THE POWER STEERING FLUID EACH TIME INTO A CLEAN BUCKET, NO BIG PARTICLES OR HOSE MATERIAL. THIS BRAKING SYSTEM IS DANGEROUS, IMAGINE DRIVING DOWN A WINDING TWO LANE STEEP DOWNHILL MOUNTAIN ROAD, WITH A HEAVY SUBURBAN AND YOU LOOSE STEERING AND BRAKES I TURNED IN THE ORIGINAL PARTS AS CORES TO GET MY MONEY BACK. *NM