Strong and Diesel powered, our 2026 GMC Sierra 1500 SLT Crew Cab 4X4 is built to break boundaries in Onyx Black! Motivated by a TurboCharged 3.0 Liter DuraMax Diesel 6 Cylinder supplying 305hp and 495lb-ft of torque to a 10 Speed Automatic transmission complemented by a locking rear differential. Our Four Wheel Drive truck relies on that setup for serious capability and scores nearly 26mpg on the highway. Proudly poised for action, our Sierra boasts LED lighting, fog lamps, 18-inch alloy wheels, a MultiPro tailgate, perimeter lighting, bed lighting, chrome bumpers, and matching mirror caps.Our SLT cabin keeps the benefits coming with heated leather power front seats, a heated-wrapped steering wheel, dual-zone automatic climate control, remote start, keyless access, pushbutton ignition, and 12V/120V outlets. Tech lovers can enjoy the 13.4-inch touchscreen and a 12.3-inch driver display that support Google Built-in, wireless Apple CarPlay®/Android Auto®, Bluetooth®, WiFi compatibility, and six-speaker audio.GMC helps you avoid harm's way with Professional Grade driver assistance from automatic braking, lane departure warning, forward collision warning, a rearview camera, lane-keeping assistance, pedestrian detection, tire pressure monitoring, hill-start assist, and more. Crafted to exceed expectations, our Sierra 1500 SLT is an excellent choice! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership!