WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Door Inside Handle Open At Bezel Locking Tabs
Courtesy of GENERAL MOTORS CORP.
Position the bezel around the inside door handle.
Push firmly on the bezel engaging the bezel locking tabs to the door.