OER Parts offers a wide selection of Package Tray / Rear Seat Shelf your Buick GS. OER Parts offers Buick GS OEM Style Rear Seat Shelves, Buick GS Rear Seat Shelf, Buick GS Deluxe Rear Seat Shelf, Buick GS Deluxe Mesh Rear Seat Shelf, Buick GS Vinyl Covered Seat Shelves, Buick GS Seat Shelves with speaker cutouts, Buick GS Seat Shelves without speaker cutouts, and Buick GS Seat Shelves with with or without center speaker.