The GMC Sierra 1500 was completely redesigned in 2007, alongside the nearly identical Chevrolet Silverado, and because of its conservative but tasteful style, it still looks fresh today. Car and Driver compliments the Sierra on its "excellent combination of good looks." According to Kelley Blue Book, it shares "the 'strong, silent-type' handsomeness of the Silverado." Automobile notes "the distinction is all in exterior design. Each of these twins has its own front fenders, hood, grille, and front fascia." The Sierra can seem a little plain, though-more assertive than the Chevy truck, not as arrogantly square as the Ford F-150, nor as butch and bold as the Dodge Ram. The Sierra's wide, tall grille is its hallmark, with big GMC lettering inside. Cars.com admires the Sierra's "chiseled front end mainly because it looks manlier-always a good thing where trucks are concerned-and more assertive." The boxy flares around its fenders are subtle reminders that this is the same brand that sells the extreme-looking 2010 Terrain crossover. Autoblog mentions that the Sierra Hybrid sports "the requisite chin spoiler and tonneau cover to help reduce aerodynamic drag" as one of the few distinctions for the gas-electric versions.
Inside the Sierra's cabin, some models have a simple, upright design with larger controls and door handles-better suited for work duty-while pricey versions have an interior that would fit in a luxury sedan. The upgraded instrument panel has a smoother, lower design, as well as surfaces and materials that come together nicely. Edmunds says the Sierra has "an attractive dash design," but Cars.com derides "the vast planks of plastic 'wood' that attempt to warm up the interior" and adds they're "undermined by the occasional unsightly wavy spots that give away their clear fakeness." The 2010 GMC Sierra Hybrid is more of the same; unless it's fitted with the optional hybrid decal package and the hybrid LCD readouts, observers will likely not notice it as different from a standard Sierra pickup. Cars.com reviewers point out that "the Sierra Hybrid adopts the boxier of the Sierra's two available interiors, with a flat cowl that spans the gauges and center controls." ConsumerGuide, meanwhile, joins a chorus of other reviewers in mentioning that "the gauges are easy to see and read." The 2010 model year brings only minor changes to the Sierra, including revised interior door panels.