NHTSA Complaint #10322903 — 2006 BUICK LUCERNE

ON 4 SEPARATE OCCASIONS MY '06 BUICK LUCERNE (3.8 L)WENT INTO UNCONTROLABLE EXCELLERATION. ON LONG ROAD TRIPS, WITH THE CRUISE CONTROL ENGAGED AND DOING APPROXIMATELY 70 MPH, WHEN I EXCELLERATEDHARD, INSTEAD OF RETURNING TO THE CRUISE SPEED IT SEEMED TO LOCK INTO A PASSING GEAR. BRAKING DIDN'T STOP IT, PUTTING IT INTO DID NOT SLOW THE ENGINE REVS., HOWEVER TURNING OFF THE KEY AND RESTARTING AFTER COASTING A LITTLE WHILE WORKED ONCE OR TWICE TO STOP THE REVS.. THE OTHER TIMES I HIT THE BRAKES REALLY HARD AND IT DISENGAGED THE CRUISE AND EXCELLERATION PROBLEM. FORTUNATELY THERE WAS NO ACCIDENT OR DAMAGE, SINCE I HAD ROOM ON THE HIGHWAY TO DO THIS. THE BUICK DEALER WHERE I BOUGHT THE CAR SAID THEY NEVER HEARD OF THIS BEFORE AND COULD NOT DUPLICATE WHEN THEY TRIED. THERE WAS APPROXIMATELY 60,000 MILES ON THE CAR WHEN THE LAST INCIDENT OCURRED. PS TURNING OFF THE CRUISE SWITCH DIDN'T HELP EITHER.