You need to remove the door panel for a number of differen.
How to remove rear door panel chevrolet express 2013.
You ll need to remove screws that are by the door handle arm rest under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don t want to break them.
Remove the right side rear door trim plate from the right side rear door.
Using a suitable and long flat bladed tool pry the retaining clips apart in order to disengage the clips.
Remove the right side rear door trim panel from the door.
How remove rear door panel.