Our diesel-powered 2026 GMC Sierra 2500HD Pro Regular Cab 4X4 in Summit White is a bold work truck for people who need the best! Motivated by a TurboCharged 6.6 Litre DuraMax Diesel V8 delivering 470hp and 975 lb-ft of torque to a 10 Speed Allison Automatic transmission engineered for energetic towing and hauling. This Four Wheel Drive truck also features an automatic locking rear differential and a 2-speed transfer case for getting a grip on your next challenge. Our Sierra sets a high bar for style with LED lighting, chrome bumpers, front recovery hooks, trailer mirrors, cargo-area lighting, side bed steps, and rear corner steps. Comfort and convenience are built into our Pro cabin, which boasts supportive seats, a tilt-adjustable steering wheel, single-zone climate control, power accessories, a 12V power outlet, and a 3.5-inch driver display. Impressive infotainment awaits with a 7-inch touchscreen, Android Auto®, Apple CarPlay®, Bluetooth®, and an AM/FM/USB stereo system. There's plenty of intelligent interior storage space, too! On the clock or off, GMC helps you stay safer with features like an HD rearview camera, automatic braking, lane-departure warning, hill start assistance, trailer sway control, hitch guidance, forward collision warning, stability/traction control, and more. When tough jobs call, our Sierra 2500 Pro is ready to answer! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership! Serving the Westman area for decades, our award-winning dealership and our professional sales staff are here to make your auto shopping experience hassle-free.