NHTSA Complaint #10294293 — 2005 BUICK TERRAZA

I WAS DRIVING MY 2005 TERRAZA WITH ABOUT 79,000 MILES ON DRY, SMOOTH CITY STREETS WHEN SUDDENLY THE CAR STARTED BRAKING ON ONE SIDE AND, I BELIEVE, TRIED TO CONTROL THE STEERING. THIS HAPPENED THREE TIMES ON THREE DIFFERENT STREETS ON THE SAME TRIP ACROSS TOWN. EACH TIME WITH THE MESSAGE "STABILITY CONTROL ACTIVE" . I DRIVE THESE ROADS REGULARLY AND THERE WAS NO REASON FOR THIS TO HAPPEN. I WAS DRIVING SLOWLY WHEN AT THE FIRST OCCURRENCE AND WAS ABLE TO GET THE CAR STOPPED. THE SECOND TIME I WAS PROBABLY AROUND 40 MPH AND BECAUSE I WAS FIRMLY GRIPPING THE WHEEL WITH LITTLE TRAFFIC I WAS ABLE TO GET THE VAN ONTO THE SHOULDER AND STOPPED. BY THE THIRD TIME I WAS PROBABLY UNDER 20 MPH AND TERRIFIED. I WAS AGAIN ABLE TO GET THE CAR STOPPED SAFELY. I PARKED IT AND TURNED IT OFF. IT HAS DRIVEN FINE FOR ABOUT 150 MILES SINCE WITH NO RECURRENCE. THE DEALER HAS DRIVEN IT OVER 100 MILES WITH THEIR SPECIAL SENSOR ON AND FOUND NOTHING. THERE ARE NO CODES. THEY HAVE CHECKED THE CONNECTORS FOR TIGHTNESS AND CORROSION, AGAIN NOTHING SUSPICIOUS. THEY HAD TURNED THE ROTORS, PUT ON NEW BRAKE PADS, AND DONE OTHER MAINTENANCE WORK ABOUT 50 MILES BEFORE THE OCCURRENCE. THEY DO NOT FEEL THIS IS RELATED. THEY ARE NOW PLANNING TO REPLACE THE YAW SENSOR ALTHOUGH THEY DO NOT HAVE EVIDENCE THAT THIS IS THE PROBLEM. THEY DON'T KNOW IF THEY WILL EVER BE ABLE TO FIND THE PROBLEM. *TR