WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Luggage Shade
Courtesy of GENERAL MOTORS CORP.
Remove the sunshade from the side hooks in the rear of the vehicle.
Place the sunshade cover in the pocket and store in the rear of vehicle.