The GMC Sierra 1500 is positioned in the middle of ... automatic locking rear differential, underbody transfer case shield, 18-inch wheels wrapped by all-terrain tires, unique grille, spray ...

And with these new methods of testing, GM can now officially rate both the Silverado and its GMC Sierra twin as being ... 5.7-foot box and 3.73 rear axle was rated at 11,200 pounds in 2014 ...

Base trim shown Body style Seating capacity Dimensions Drivetrain View all 2012 GMC Sierra ... locking rear differential and side curtain airbags. New for 2012 The Sierra 1500 Hybrid gets a ...