A cover assembly for an opening in a sliding vehicle door system including a linkage arm operably associated with the vehicle door and a vehicle body. Also included is a tambour door panel associated with the linkage arm. Further included is a channel located proximate a door trim panel having at least one slot, the channel including an opening capable of allowing the linkage arm to pass through at least a portion of the channel, where at least a portion of the tambour door panel slidably travels within the channel, wherein a sliding motion of the vehicle door imparts movement on the linkage arm, the linkage arm sliding within the at least one slot and the channel, and wherein the linkage arm simultaneously imparts movement on the tambour door panel.