WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
Remove the sliding door opening weatherstrip from the sliding door pinch-weld flange.
Clean all adhesive from the pinch-weld flange.
Fig 1: Removing Sliding Door Opening Weatherstrip From Sliding Door Pinch-Weld Flange