I WAS DRIVING ON THE INTERSTATE AT APPROXIMATELY 55-60 MPH AND MERGED RIGHT TO TAKE AN OFF RAMP TO A SIDE STREET WHEN BOTH SIDE AIR BAG CURTAINS DEPLOYED WITHOUT INCIDENT. THERE WERE FOUR PEOPLE IN THE VEHICLE AT THE TIME OF INCIDENT AND MY WIFE SUFFERED SERIOUS CHEST BRUISING FROM THE SEATBELT LOCKING UP. THE SEATBELT LOCKING MECHANISM FRONT PASSENGER AND FRONT DRIVER SIDE WILL NOT RETRACT. AT THE TIME OF INCIDENT I WAS CLEARLY THE ONLY THING ON THE ROAD WITH NO OBSTRUCTIONS. THIS COMPLAINT SHOULD BE TAKEN VERY SERIOUSLY AND CHECKED INTO BY GENERAL MOTORS FOR THE SAFETY OF MYSELF AND OTHERS. *TR