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2003 GMC Sierra Light Duty Full-Size Pickup Truck

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GMC's light-duty Sierra trucks in half-ton 1500 models include Wideside and Sportside body styles, rear-wheel and four-wheel traction models, and cabs of regular and extended lengths. New issues earn new gear for safety and comfort -- redesigned seats, air bags that detect when a rider occupies a seat, multi-zone climate systems, optional eight-button steering wheel controls and a fresh instrument panel. Sierras also show a revamped face with bold new grille with chrome bumpers on base editions or body-colored fascia for up-level trims. Deluxe Sierra Denali with all-wheel-drive (AWD) system stocks Delphi Automotive's Quadrasteer, which controls the direction of rear wheels so all four wheels work together more efficiently than when only the front ones turn. Powertrains contain new electronic throttle controls. The V8 packages range from a base 4.3-liter at 200 hp to a 5.3-liter version for 285 hp and the 6.0-liter V8 worth 300 hp for Sierra but in Sierra Denali it's pushed to 325 hp.