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 push-pins that retain the baffle.
Remove the bolts that retain the baffle to the radiator support.
Remove the radiator baffle from the vehicle.
Fig 1: Removing Bolts That Retain Baffle To Radiator Support