The C / D pillars are mainly in larger vehicles such as SUVs, mini vans or vehicles with 3rd row seating. These beams are typically molded as one single peice so to access D pillar removal of C pillar is neccessary. The D pillars are located on the left and right side of your rear windshield. Often made of plastic and colored tan, black or grey. We will install Stars in the  C / D pillars.