WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Open the hood.
Remove the rear hood seal from the inlet grille panel studs.
Remove the seal from the inlet grille panel.
Fig 1: Removing Seal From Inlet Grille Panel - Hood Rear