The GMC Sierra delivers stout towing and hauling ability, a quiet cabin, and distinctive styling. GMC Sierra is built on the same platform and shares many mechanical pieces and body panels with the Chevrolet Silverado. Front-end styling and some details vary, but if you ever needed service either dealership could do it.
Sierra was redesigned for the 2014 model, and the 2015 Sierra gets some noteworthy updates. All 2015 Sierra models offer a spray-in bedliner with molded GMC logo, OnStar and 4G LTE with built-in wi-fi, and tow ratings adhere to SAE J2807 standards. New towing mirrors have LED guide lights for reversing, and IntelliLInk adds text messaging alert and Siri eyes free. The 6.2-liter V8 option now comes with an 8-speed automatic transmission. And the 2015 Sierra Denali comes with magnetic ride control.
The GMC Sierra 1500 offers a choice of three cabs and three bed lengths: Regular Cab standard and long bed, Double Cab standard, and Crew Cab standard or short bed. Nearly all offer 2WD or 4WD.
Three engines include a V6 and two V8s, all favoring torque over horsepower and sharing the same fuel-saving technologies often reserved for optional engines. The V6 has the highest torque of any full-size base V6, and the 6.2-liter V8 is the most powerful engine in a light-duty full-size pickup. The smaller engines use a 6-speed automatic and can run E85; the 6.2 uses an 8-speed.
Sierra trim levels vary from work truck with wind-up windows to Denali in stitched perforated leather trimmed with genuine aluminum. Front rows offer seats for two or three, rear seats have three belts, and multiple child-seat anchors, but we don’t recommend them for three adults.
Beyond the appearance relative a Silverado, the Sierra offers LED front position lights and Elevation and Carbon Edition specials Silverado does not. Sierra Denali has a unique instrument panel and magnetic ride control not offered on Silverado. Sierra has a higher level of standard equipment. GMC’s Pro Grade plan covers some routine maintenance for the first two years or 24,000 miles.
Sierra competes against the Ford F-150, Ram 1500, Nissan Titan, Toyota Tundra and Chevrolet Silverado. If Sierra is too small, try GMC Sierra HD; if it’s too big, try GMC Canyon.