Features of the Sierra All Terrain package include 4WD with Eaton locking rear differential; Z71 Off-Road suspension package with Rancho monotube shocks, high-capacity air cleaner, Hill Descent Control and underbody transfer case shield; Rear Park Assist; unique grille with body-color surround and tinted chrome accents; body-color front and rear bumpers (rear bumper with corner steps); spray-on bedliner; All-Terrain-logo instrument cluster and nclinometer in the driver information center.