1990 CHEVROLET SUBURBAN Service Brakes, Hydraulic Problems

AFTER BRAKING 2 TO 3 TIMES THE BRAKES STAGGER, SHUDDER GRABBING AND STICKING, SEEMS LIKE THE ANTILOCK SYSTEM IS HAPPENING EACH AND EVERY TIME BRAKES ARE APPLIED.

WHILE MAKING A SUDDEN STOP THE VEHICLE CONTINUES TO TRAVEL. CONSUMER DEPRESSED THE BRAKES TO THE FLOORBOARD IN ORDER TO STOP. PLEASE PROVIDE FURTHER INFORMATION. *AK

I WAS ENTERING THE I-205 SOUTHBOUND ON RAMP OFF OF MILL PLAIN BLVD IN VANCOUVER, WA WHEN THE DRIVER OF THE CAR IN FRONT OF ME SUDDENLY APPLIED HER BRAKES. I ATTEMPTED TO APPLY MY BRAKES, BUT THE BRAKE PEDDLE WENT LIMP ALL THE WAY TO THE FLOOR. I TRIED TO PUMP THE BRAKES, BUT THE PEDDLE STAYED LIMP AND ALL THE WAY TO THE FLOOR. I DIDN'T PANIC BECAUSE I DIDN'T SEE ANY REASON FOR THE DRIVER TO SLAM ON HER BRAKES--THERE WAS NO ONE IN FRONT OF HER AND THERE WAS NO ONE PULLING IN FRONT OF HER, AND WE WERE ENTERING THE I-205 ON-RAMP. THERE WAS PLENTY OF ROOM BETWEEN OUR VEHICLES. I FIGURED THAT THE DRIVER OF THE OTHER VEHICLE WOULD MOVE ON AS WE WERE ON THE FREEWAY ON-RAMP. SHE THEN CAME TO A COMPLETE STOP ON THE FREEWAY ON RAMP. AT THIS POINT THE SPEED WAS PROBABLY LESS THAN 20 MPH. AS I WAS REACHING FOR THE EMERGENCY BRAKE, MY SUBURBAN BUMPED INTO THE BACK OF HER 1987 ACURA. AFTER THE ACCIDENT, THE BRAKES ON MY SUBURBAN WORKED FINE. I TOOK MY FOOT OFF OF THE BRAKE PEDDLE AFTER BOTH VEHICLES CAME TO A COMPLETE STOP FROM THE IMPACT MOTION. I THEN PUSHED ON THE BRAKE PEDDLE AND IT WAS GOOD. I BACKED UP A BIT AND THE BRAKES WORKED FINE. I DROVE FORWARD A BIT AND UNTO THE SHOULDER AND THE BRAKES WORKED FINE. THE ROAD WAS DRY AND THE SKY WAS SUNNY. I COULDN'T EVEN FATHOM THE BRAKES FAILING FOR A COUPLE OF DAYS, THEN IT DAWNED ON ME THAT SINCE THEY FAIULED ONCE THEY COULD FAIL AGAIN ABD POSSIBLY WITH MORE TRAGIC CONSEQUENCES. I TOOK THE SUBURBAN TO VANCOUVER CHEVROLET FOR A BRAKE CHECK AND EXPLAINED TO THE WHAT HAD HAPPENED. THEY SAID THAT THE MASTER CYLINDER WAS LEAKING DOWN AND REPLACED THE MASTER CYLINDER. I DON'T FULLY UNDERSTAND WHAT MASTER CYLINDER LEAKING DOWN MEANS. I CHECKED THE BRAKE FLUID LEVEL AFTER I GOT HOME AFTER THE ACCIDENT AND IT WAS GOOD. I HAD NEVER HAD ANY PROBLEM WITH A LIMP BRAKE PEDDLE ON THE SUBURBAN BEFORE. I NEVER HAD ANY PROBLEM WITH THE BRAKE PEDDLE. THERE NEVER WAS ANY SPONGINESS OR ANY ANY INDICATION OF A BRAKE PEDDLE PROBLEM PRIOR TO THIS INCIDE

WHEN THE BRAKES ARE APPLIED THE LIGHT COMES ON , THE VEHICLE EXPERIENCES EXTENDED STOPPING DISTANCE. THE DEALER HAS BEEN NOTIFIED. *AK

ANTI LOCK BRAKES FAILED ON SEVERAL OCCASIONS.

WHILE DRIVING VEHICLE ABOUT 55 TO 60 MPH THE ABS LIGHT COME BLINKING ON AND OFF. THEN WHEN STEPPING ON THE BRAKE PEDAL, THE IT DOESN'T FEELS LIKE IS WORKING AS IF SHE STEPPED ON BRAKES HARDER, THE BRAKES MAKES A METAL NOISE. MANUFACTURER HAD BEEN CONTACTED, AND CONSUMER HAD MADE AN APPOINTMENT WITH DEALER. *AK

ANTI-LOCK BRAKES FADE IN EMERGENCY SITUATIONS, RESULTING IN A COLLISION.

ANTI LOCK BRAKES FAIL TO STOP VEHICLE EFFICIENTLY, CAUSING EXTENDED STOPPING DISTANCE.

OCCASIONALLY DURING NORMAL BRAKING THE BRAKE PEDAL WILL GO TO THE FLOOR. *AK

ABOUT 20 FEET BEFORE A COMPLETE STOP REAR ANTI LOCK BRAKES GO OUT. TT

ABS: WHENEVER TOWING BOAT TRAILER, APPLY BRAKES; NO REAR BRAKES; FRONT BRAKES LOCKS UP DURING WET WEATHER; SLIDES; EXTENDED STOPPING. TT