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.
Fig 1: Installing Air Inlet Grille
Courtesy of GENERAL MOTORS CORP.
Install the air inlet grille to the body.
Install the air inlet grille retainers (1).
Fig 2: Installing Retainers To Air Inlet Grille
Courtesy of GENERAL MOTORS CORP.
Position the windshield wiper arms to the down position.