2025 GMC Sierra 1500 AT4 3.0L Duramax Diesel 4x4 AT4 Premium Technology Package One Owner Duramax diesel efficiency, AT4 off-road capability, and premium technology make this Premier Certified 2025 GMC Sierra 1500 AT4 Crew Cab an outstanding luxury off-road truck. Powered by the 3.0L Duramax I6 diesel, this Sierra is loaded with the AT4 Premium Package, Technology Package, HD Surround Vision, 15-inch Head-Up Display, Bose audio, leather, and advanced trailering technology. Finished in Onyx Black with Jet Black/Kalahari perforated leather, this Sierra pairs the 3.0L Duramax I6 with a 10-speed automatic and 4WD. It features a CARFAX One-Owner history and is rated at an impressive 22 city / 26 highway MPG. Top Buyer-Search Features Premier Certified CARFAX One-Owner 3.0L Duramax I6 Diesel 10-Speed Automatic 4WD AT4 Premium Package AT4 Preferred Package Technology Package HD Surround Vision 15 Multicolor Head-Up Display Rear Camera Mirror Bed View Camera & Hitch View Trailering Package Integrated Trailer Brake Controller In-Vehicle Trailering App Trailer Camera Provisions Trailer Side Blind Zone Alert Heated & Ventilated Front Leather Seats Heated 2nd-Row Outboard Seats Bose Premium 7-Speaker Audio Navigation Wireless Apple CarPlay & Android Auto Wireless Phone Charging Remote Start & Push-Button Start Spray-On Bedliner with GMC Logo Off-Road High-Clearance Steps Red Recovery Hooks 20 Machined-Aluminum Wheels 3.0L Duramax AT4 Capability The 3.0L Duramax turbo-diesel is one of the biggest highlights, delivering diesel performance while achieving up to 26 MPG highway. It's paired with a 10-speed automatic, 4WD, auto-locking rear differential, Hill Descent Control, heavy-duty air filter, and AT4 off-road equipment. Premium AT4 Interior The Jet Black interior with Kalahari accents and perforated leather gives the AT4 its distinctive premium look. Heated and ventilated front seats, heated rear outboard seats, dual-zone climate control, power steering column, and premium floor liners provide excellent comfort. Technology & Trailering The Technology Package brings some of GMC's most desirable equipment, including a 15-inch Head-Up Display, HD Surround Vision, Rear Camera Mirror, Bed View Camera, front and rear parking sensors, and advanced camera technology. For towing, you'll have an integrated trailer brake controller, Hitch View, In-Vehicle Trailering App, trailer camera provisions, and Trailer Side Blind Zone Alert. For shoppers searching for a 2025 GMC Sierra AT4 diesel, 3.0 Duramax Sier
