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An adventure in the great outdoors with the GMC Sierra Crew Cab Short Box AT4 show truck has pleasant surprises for outdoors enthusiasts.

GMC’s all-new 2004 Sierra 1500 Crew Cab serves as the base of the Sierra AT4, providing adventure seekers with two- or four-wheel-drive configurations and a new 5-foot, 8-inch (1.7 meter) cargo box that permits easy handling, parking and garage storage.

Building on this solid production base, the Sierra AT4 offers several innovative features that customize functionality and capabilities. It includes a two-tier load floor with cargo box pullout to accommodate and protect gear and versatile storage compartments that fit over the wheel wells to maximize the cargo management capability of the pickup bed. The cargo rail system developed by Let’s Go Aero, combined with tie-down cleats developed by SportRack, allow versatile cargo management capabilities. A gas cap key safe allows the driver to safely stow keys while he or she experiences the outdoors and a cloth roll-back sunroof provides the Sierra AT4 with a larger open-air experience.

“Sierra Crew Cab offers the outdoors enthusiast the ability to haul gear and friends to any outdoor adventure in style,” said Eric Snow, GMC product development manager. “Surprising functionality and comfort make this innovative concept instantly recognizable as a Professional Grade GMC experience.”

Rugged styling inside and out
Style and function take on added dimensions in the Sierra AT4 with innovative Arc’Teryx all-weather material on the seating surfaces and interior appointments and power retractable running boards for easy entry/exit without compromising ground clearance while driving.

An enhanced Bose premium audio system provides tunes for the road and at the campsite. The custom-designed Bose sound system for the GMC Sierra AT4 echoes the spirit of adventure, both inside and out. In addition to the 7-speaker acoustically engineered interior system, the AT4 offers an additional sound system that brings Bose-quality sound to outdoor environments. Modified Bose 251 environmental exterior speakers that mount to the sides of the vehicle’s cargo rail system are controlled by a patented Bose remote key fob.

The Sierra AT4 is outfitted with the right attire for any trip with a custom appearance package that includes wheel flares, a unique grill application, front fascia accent, rear fascia, body side hardware and Khaki Mist optically enhanced paint.

Getting around: From bustling city to remote glade
Whether it’s cruising down highways or cutting through overgrown dirt roads, the Sierra AT4 has the power and suspension package to arrive at the destination. A Vortec 5300 V-8 engine that produces 295 horsepower and 330 lb.-ft. of torque powers the Sierra AT4. Off-road appointments include four-wheel-drive, raised wheel-to-body height for greater ground clearance, all-terrain suspension components and tow hooks.
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