Abstract: A dual latching arrangement for a pair of laterally spaced slide track assemblies supporting a vehicle seat support structure for horizontal fore and aft movement to a plurality of adjusted positions. The dual latching arrangement consists of a central U-shaped lift bar having each of its longitudinal legs rotationally supported about a transverse pivot axis adjacent the aft end of an associated track. Primary and secondary latching mechanisms are supported on respective upper sliding track members adjacent an associated leg for rotation about the pivot axis. Primary and secondary biasing springs are operative to urge each primary and secondary locking detent toward engagement with a series of openings on an associated lower track member fixed to the vehicle. Upon the lift bar being rotated to its unlatched mode the primary and secondary detents are removed from their lock openings allowing the seat support structure to be longitudinally adjusted.