SUDDEN AND UNEXPECTED ACCELERATION DURING A LOW SPEED (<5 MPH) TIGHT LEFT HAND TURN. FIRST INCIDENT RESULTED IN CRASH AGAINST HOUSE WALL, DAMAGE TO VEHICLE. VEHICLE REPAIRED BELOW INSURANCE DEDUCTIBLE, NO DAMAGE TO STRUCTURE. SECOND INCIDENT IN A PARKING LOT, ON OR ABOUT MAY 16, 2012, ABLE TO STOP VEHICLE WITH NO CRASH. THIRD INCIDENT OCCURRED AT NEIGHBORS HOUSE JUNE 26, 2012, CAUSING CRASH. DAMAGE TO VEHICLE AND GARAGE DOOR. ALL INCIDENTS OCCURRED WHEN LIFTING FROM ACCELERATOR PRIOR TO STEPPING ON THE BRAKE TO SHIFT INTO REVERSE (VEHICLE STILL IN DRIVE, NO BRAKING). AFTER 3RD INCIDENT VEHICLE WAS DRIVABLE BUT WAS TOWED TO THE SELLING/SERVICING BUICK DEALER. VEHICLE IS STILL BEING INVESTIGATED BY DEALER. CONDITION DOES NOT OCCUR EVERY TIME IN THE SAME TIGHT LEFT HAND TURN. TYPE OF TURN IS 90 DEGREES IN DRIVEWAYS TO SIDE LOADING GARAGES AND INTO PARKING SPACES. *TR