Editor's note: One of life's great pleasures is tearing down a western US highway in a full-size pickup truck, feeling like the big dog as you pass puny little cars, pitiful compact trucks, and minivans with peanut butter and jelly smears on the windows. The GMC Sierra fills the bill on the big dog front but it's also surprisingly agile, handles like a smaller truck and even has a Sport Mode to help you maneuver in tight spots. And it's as good-looking as it is mighty. Enjoy this collection dedicated to an American classic, and get your GMC Sierra wallpaper!