Sierra 2500

AT4X

Spider

AWD4WD

8-Cylinder Turbo

Diesel

Drivers in Lakeland, Polk County, and across Central Florida choose the Regal Automotive Group for a wide selection of new vehicles and a dealership experience built around convenience and transparency. With multiple locations in Lakeland, Regal makes it easy to find the right vehicle to fit your lifestyle. - Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque - 10-Speed Automatic transmission with 4WD - Gooseneck/5th Wheel Prep Package with hitch platform and bed-mounted 7-pin harness - Dual 220-Amp Primary and 170-Amp Auxiliary Alternators - Upfitter Switch Kit with five configurable circuits for electrical accessories - Engine Block Heater for cold weather reliability - Black Badging Package with black GMC emblems and Sierra nameplates - Console-Mounted Safe for secure storage - Auxiliary Trailer Camera with wired installation provisions - Multicolor 15 Diagonal Head-Up Display with trip computer - Premium GMC Infotainment System with Apple CarPlay and Android Auto - Bose Premium Series 12-Speaker System with SiriusXM 360L Trial Subscription - Full Grain Leather Seats with 16-way power adjustment and lumbar support - Heated and ventilated front seats with heated rear seats - Advanced safety features including Automatic Emergency Braking, Lane Departure Warning, and Rear Cross Traffic Alert This 2026 GMC Sierra 2500HD AT4X arrives in White and delivers the capability you need for serious work and daily driving. The powerful Duramax turbodiesel engine produces substantial torque for towing and hauling, while the 10-speed automatic transmission ensures smooth power delivery. With 4WD and an off-road suspension, you have the traction and control required for challenging terrain and unpredictable weather. The AT4X trim elevates your truck with purposeful exterior styling, including the black badging package, gloss black door handles, and distinctive grille design. LED smoked amber roof marker lamps and LED cargo area lighting add modern capability to the truck bed. The spray-on pickup bedliner with GMC logo protects your investment while providing a professional appearance. Inside, full grain leather seating with heated and ventilated functions keeps you comfortable in any season. The 16-way power driver and passenger seats with lumbar support ensure proper positioning for long drives. The multicolor head-up display projects essential information directly into your line of sight, reducing distraction while keeping you informed. Wireless charging and multiple USB ports throughout the cabin keep your devices powered and connected. For those who work with trailers, this Sierra 2500HD is fully equipped. The gooseneck and 5th wheel prep package includes a hitch platform, stamped bed holes, and a bed-mounted 7-pin trailer harness. The auxiliary trailer camera provisions and in-vehicle trailering system app provide visibility and control when towing. The upfitter switch kit with five configurable circuits allows you to add aftermarket electrical accessories tailored to your specific needs. Safety technology surrounds you with features like automatic emergency braking, forward and rear pedestrian braking, ultrasonic front and rear park assist, and a bed view camera with surround vision. Lane departure warning, trailer side blind zone alert, and rear cross traffic alert help protect against accidents. The safety alert seat and occupant sensing airbags work together to keep you and your passengers secure. For nearly 50 years, the Regal Automotive Group has proudly served Lakeland and Polk County drivers. With a large inventory of quality vehicles, competitive pricing, and aggressive financing options, our team is committed to delivering a straightforward buying experience and excellent customer service.

New 2026 GMC Sierra 2500 AT4X AWD/4WD

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