WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Outer Sealing Strip And Door
Courtesy of GENERAL MOTORS CORP.
Completely lower the window.
Gently pry the outer sealing strip (1) from the door (2) using a taped flat bladed tool.