WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Rear Side Door Sill Plate
Courtesy of GENERAL MOTORS COMPANY
Callout
Component Name
1
Rear Side Door Sill Plate Assembly
2
Rear Side Door Sill Plate Assembly Clip (Qty: 3) TIP:
Use a flat-bladed plastic trim tool in order to release the clips and remove the sill plate.