WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Front Carpet Retainer
Courtesy of GENERAL MOTORS CORP.
Callout
Component Name
1
Front Side Door Opening Floor Carpet Retainer
2
Side Door Opening Floor Carpet Retainer Clip (Qty: 2)