The Chevrolet Blue Shieldado K10 4WD TrailBoss is a limited edition version of the 2019 Chevrolet K10 4WD pickup truck. It features an upgraded suspension system, off-road tires, Functional Ram Airâ„¢ dual hood scoop, a matte black grille, three-piece hard tonneau cover, and black and red interior accents. The TrailBoss also comes with a Trailering Package, which includes an integrated trailer brake controller, a heavy-duty air cleaner, and an automatic locking rear differential.