2015 Buick Enclave Brakes Problems

2015 Buick Enclave put in Park, doors unlocked, got out and the vehicle moved while in park.

TL* THE CONTACT OWNS A 2015 BUICK ENCLAVE. THE CONTACT STATED THAT WHILE STOPPED AT A TRAFFIC LIGHT THE ENGINE SHUT OFF AND THE VEHICLE WOULD NOT MOVE FORWARD. THE ENGINE RPMS REVVED UP WITH SEVERAL WARNING LIGHTS ILLUMINATED. THE VEHICLE RESTARTED AFTER AN HOUR WITH NO FURTHER ISSUES. THE FAILURE RECURRED SIX TIMES. THE DEALER (JERRY'S AUTOMOTIVE INC, 501 E 25TH ST, BALTIMORE, MD 21218 AND ANDERSON BUICK GMC 10125 YORK RD, COCKEYSVILLE, MD 21030 (443) 578-4924, WERE CONTACT BY PHONE AND STATED THE ISSUE WAS CAUSE BY THE BRAKE BOOSTER AND MASTER CYLINDER MALFUNCTION. THE VEHICLE WAS NOT REPAIRED. THE CONTACT WAS INFORMED BY THE MANUFACTURER THAT THE WARRANTY HAD EXPIRED. THE FAILURE MILEAGE WAS 48,000.

ON TWO SEPARATE OCCASIONS ALL FOUR VEHICLE BRAKES LOCKED UP WHILE THE VEHICLE WAS IN MOTION. THE FIRST TIME WAS IN A NEIGHBORHOOD AND THE VEHICLE WAS COMING TO A STOP AT A STOP SIGN WHEN THE REAR BRAKES LOCKED AND WOULD NOT RELEASE. THE VEHICLE WAS SHUT DOWN FOR AN EXTENDED PERIOD AND THEN WAS ABLE TO BE MOVED A SHORT PERIOD. THE BRAKES UNLOCKED AFTER SITTING OVERNIGHT. THE LOCAL DEALERSHIP SERVICED THE VEHICLE AND SAID THE BRAKE SYSTEM WAS OUT OF CALIBRATION. TWO DAYS LATER ALL FOUR BRAKES LOCKED WHILE DRIVING DOWN A INDUSTRIAL AREA STREET. THE VEHICLE WAS ABLE TO BE FORCIBLY MOVED OFF THE ROADWAY WHERE IT SAT FROM TWO HOURS AWAITING A TOW. AN ABS SYSTEM MALFUNCTION WAS BLAMED FOR THIS FAILURE AND RESULTED IN A VERY COSTLY REPAIR, NOT COVERED BY THE MANUFACTURER.

ON THURSDAY, 7/26/2018, I HAD PARKED MY CAR IN A RESTAURANT PARKING LOT. I APPEAR TO HAVE PULLED THE VEHICLE UP ONTO A CONCRETE SPACE DIVIDER. WHEN I TRIED LEAVING THE RESTAURANT, I COULDN'T BACK OFF OF THE SPACE DIVIDER, THE CAR WOULDN'T MOVE BACKWARD, SO I TRIED PULLING FOREWORD. WHEN THE CAR CAME FREE FROM THE DIVIDER, IT SHOT FOREWORD. APPLYING THE BREAKS HAD NO EFFECT. IN FACT THE CAR APPEARED TO ACCELERATE. I WAS HEADED DIRECTLY TOWARD A CONCRETE BUILDING, SO TO AVOID HITTING THE BUILDING HEAD ON, I HAD JUST ENOUGH TIME TO TURN THE STEERING WHEEL SLIGHTLY CAUSING THE VEHICLE TO SIDE SWIPE THE BUILDING BUT IT CRASHED INTO TWO PARKED VEHICLES. IT CAUSED EXTENSIVE DAMAGE TO MY VEHICLE AND ONE OF THE PARKED VEHICLES AND ONLY SLIGHT DAMAGE TO THE THIRD. IT APPEARED THAT THE VEHICLE ACCELERATED BEYOND THE EFFORT I APPLIED TO THE GAS PEDAL, IT RAN AWAY AND THE APPLICATION OF THE BRAKES HAD NO OR LITTLE EFFECT IN SLOWING THE VEHICLE. IS THERE, OR HAS THERE BEEN, REPORTS OF SIMILAR PROBLEMS WITH ACCELERATION PROBLEMS WITH THE BUICK ENCLAVE, 2015 MODEL ?

INTERMITTENT DIFFERENT LEVELS IN BREAK PEDAL TRAVEL. AT TIMES MY CAR STOPS NORMALLY WHEN THE BRAKE PEDAL IS FIRST PRESSED (ABOUT 2 INCHES). OTHER TIMES THE BRAKE PEDAL TRAVEL IS MUCH GREATER (ABOUT 4 INCHES OR MORE), AND THE PEDAL HAS A SPONGY FEEL. I HAVE TAKEN THE CAR BACK TO BUICK NUMEROUS TIMES, AND THEY STATE THEY CAN NOT FIND ANY PROBLEM. THIS IS A VERY SERIOUS PROBLEM, ESPECIALLY AT HIGHWAY SPEEDS, WHERE I AM NEVER SURE I WILL BE ABLE TO STOP THE CAR IN TIME TO AVOID AN ACCIDENT.