Remove both (front & rear) sill plates (scuff plates), remove the bolt for the lower seatbelt attaching point, remove the lower trim panel. This will expose a couple of bolts holding the upper trim panel you want to remove. All the panels are also held with clips that snap out. It may take a little force to pull them out. It may help if you pull the rubber door gaskets off the body (no problem pushing them back on) .Good luck.