Certified. Certification Program Details: 3 Month/3,000 Mile Certified Warranty.The 2021 GMC Sierra 2500HD Denali delivers heavy-duty diesel capability, premium luxury, and advanced towing technology in a powerful full-size truck. Finished in Ebony Twilight Metallic, this Denali combines rugged performance, upscale comfort, and professional-grade capability for towing, hauling, and everyday driving.Performance & Capability 6.6L Duramax Turbo-Diesel V8 Engine 10-Speed Automatic Transmission Four-Wheel Drive Gooseneck / 5th Wheel Prep Package X31 Off-Road Package Exhaust Brake and Heavy-Duty Trailering EquipmentLuxury Interior & Comfort Heated and Cooled Front Seats Heated Rear Seats Power Driver and Passenger Seats with Memory Dual-Zone Automatic Climate Control Power Sunroof Premium Interior Trim Rear Seat Storage PackageTechnology & Connectivity Navigation System Apple CarPlay and Android Auto Premium Sound System Heads-Up Display Aerial View Camera System Bed View Camera Universal Garage Door OpenerSafety & Driver Assistance Blind Spot Monitoring Lane Departure Warning Front Collision Warning Front Collision Mitigation Rear Parking Aid Cross-Traffic Alert Automatic High Beams Ready to take the next step Online Purchasing & Delivery Now Available Backed by our 3 Month / 3000 Mile Certified Warranty for added peace of mind. Prefer to talk Call us at 334-491-7444 Transparency Guarantee    Delivery    FAQ