The Sierra is all-new for 2014, even though you might not guess it at first glance. It’s true that the 4.3L V6 (285 horsepower), 5.3L V8 (355 horsepower) and 6.2L V8 (420 horsepower) are all the same size as before, but these are completely new engines featuring direct injection and cylinder deactivation. All are more powerful and more fuel-efficient than their predecessors. For now, only a six-speed automatic gearbox is available. Elegant, refined and full of thoughtful design touches, the Sierra is able to pull up to 12,000 lbs.