ODI has received one (1) complaint alleging that the 2nd row passenger-side seat belt release buckle anchor detached from seat frame during a side impact crash.during the crash, the occupant was thrown from his seat, partially ejected through the rear quarter window of the vehicle.occupant sustained injury.GM has subsequently changed seat belt anchoring design in MY 2000. ODI has completed a preliminary investigation and has determined that further information is needed to determine whether a safety defect exists.