A power sliding door for a motor vehicle comprises a door structure, a power drive assembly, a latch assembly, and a single motor for operating both the latch assembly and the power drive assembly. The door structure is mounted on a track associated with the motor vehicle, the door structure being movable along the track between opened and closed positions. The power drive assembly is connected with the door and capable of being driven to move the door along the track between the opened and closed positions. The latch assembly is mounted on the door and movable between latched and unlatched positions. The single motor is mounted on the door structure operatively connected with both the power drive assembly and the latch assembly. The motor drives the power drive assembly and thus enables the power drive assembly to move the door along the track between the opened and closed positions. The motor assists movement of the latch assembly to the latched position after the power drive assembly moves the door to the closed position.