Built for serious work, our diesel-powered 2026 GMC Sierra 3500 SLE Double Cab 4X4 in Summit White provides strong pulling authority, composed handling, and dependable performance for heavy-duty tasks. Powered by a TurboCharged 6.6 Litre DuraMax Diesel V8 providing 470hp and 975lb-ft of torque to a 10 Speed Allison Automatic transmission. This Four Wheel Drive truck also features responsive handling even under heavy loads, thanks to a 2-speed transfer case and automatic locking rear differential. Our Sierra 3500 SLE Regular Cab exterior includes LED lighting, 18-inch alloy wheels, cargo bed lighting, trailering mirrors, and side bed steps with rear corner steps for convenient bed access. Our SLE cabin is arranged for everyday work with supportive cloth seating, a leather-wrapped multifunction steering wheel, single-zone climate control, and keyless access with pushbutton ignition. Infotainment is centered on a 13.4-inch touchscreen paired with a 12.3-inch driver display, providing Google Built-In, wireless Apple CarPlay®/Android Auto®, WiFi compatibility, Bluetooth®, and AM/FM/USB audio. On the clock or off, GMC helps keep you safe with automatic braking, lane-departure warning, forward collision warning, hitch guidance, an HD rearview camera, hill start assistance, trailer sway control, stability/traction control, and more. With all that, our Sierra 3500 SLE won't complain when the big jobs call! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership! Drive a Little, Save a Lot. Really Experience the Murray Difference.