WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Install the front air seal to the hood.
Fig 1: Identifying Hood Front Seal
Courtesy of GENERAL MOTORS CORP.
Install the push-in retainers to the front air seal into the hood.