WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Liftgate Trim Finish Panel Pull Cup
Courtesy of GENERAL MOTORS COMPANY
Callout
Component Name
1
Liftgate Trim Finish Panel Pull Cup Procedure Use a flat bladed plastic tool to remove.