WARNING: This page is about a different car, the 2005 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
Open the hood.
Fig 1: Removing Hood Insulator Push-In Retainers From Hood
Courtesy of GENERAL MOTORS CORP.
Remove the hood insulator push-in retainers from the hood.
Slide the hood insulator rearward. Remove the hood insulator.