Its cargo box is bigger in all configurations. Headlights and taillights are improved. The chassis is stronger and more rigid. The ride is quieter. Also, its rear seat is angled to be more comfortable than the previous Sierra or its current-generation competitors.
Front belts are now seat-mounted.
Brake rotors are larger. So are brake pads. And the Sierra is the only full-size pickup with rear head restraints, said Mary Ann Combs, director of body and structure for the GM Truck Group. What the truck doesn't have is a fourth door. Dodge offers it now.