NHTSA Complaint #11376909 — 2011 GMC YUKON

HAVING AN ONGOING ISSUE WHILE DRIVING. I'VE BEN ON THE HIGHWAY IN THE RAIN AND SNOW GOING 65-70 MPH AS WELL AS DRY PAVEMENT. ALL OF A SUDDEN MY DASHBOARD WILL LIGHT UP SAYING SERVICE TRACTION CONTROL, BRAKE SYSTEM, ABS , PARK ASSIST OFF AND CHECK ENGINE LIGHTS UP AND BLINKS . I WILL LOOSE MY BRAKES I THEN HAVE TO PUMP MY BRAKES SEVERAL TIMES TO GET TO EVEN SLOW DOWN OR STOP . IT'S ALSO HAPPENED WHEN I AM DRIVING DOWN A RESIDENTIAL STREET. WHEN I PULL OVER TURN THE TRUCK OFF AND GOES BACK TO NORMAL FOR A SHORT DISTANCE. WEATHER DOESN'T SEEM TO BE A FACTOR OR SPEED. TAKEN VEHICLE TO DEALERSHIP AND THEY DON'T FIND ANYTHING WRONG. HAD THEM REPLACE BEARINGS AS WELL AS SPEED SENSORS AND IT IS STILL HAPPENING. AND I HAD A CODE COME UP FOR CYLINDER MISFIRE AND KNOCK SENSOR. THEN TAKE IT GARAGE AND NOTHING IS WRONG.