- Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel Compatible
- Wheels; 20" (50.8 Cm) Machined Aluminum
- Gooseneck / 5Th Wheel Package
- Leather Seats
- Snow Plow Prep/Camper Package
- Bed View Camera
- High Idle Switch
- Alternator; 220 Amps
- Upfitter Switch Kit; (5)
- Engine Block Heater
- Keyless Start
- Lamps; Smoked Amber Led Roof Marker; (Led)
- Cooled Front Seat(S)
- At4 Preferred Equipment Group
- Audio System; Premium Gmc Infotainment System With 8" Diagonal Color Touch-Screen
- Emissions; Federal Requirements
- Exhaust Brake
- Gooseneck / 5Th Wheel Prep Package
- Gvwr; 12;100 Lbs. (5488 Kg) With Single Rear Wheels
- Jet Black With Kalahari Accents; Perforated Front Leather Seating Surfaces
- License Plate Kit; Front
- Rear Axle; 3.42 Ratio
- Seats; Front Bucket With Center Console
- Summit White
- Tires; Lt275/65R20 All-Terrain; Blackwall
- Transmission; Allison 10-Speed Automatic
- Winter Grille Cover
2021 GMC Sierra 3500HD AT4 | Duramax Diesel | 1-Owner Clean Carfax Available Now at AutoNation Dodge Ram Broadway 5600 S Broadway, Littleton, CO 80121 720.842.7793 Not every truck is born equal. Some are built to haul weight. This one was built to carry kingdoms. This 2021 GMC Sierra 3500HD AT4 is more than a heavy-duty pickup—it’s a weapon of endurance, a fortress on wheels, and a command center for every journey. With only 87,925 miles, a 1-owner clean Carfax, and a legacy of rugged refinement, this AT4 is ready to take its place as your battle-tested ally. Performance & Power (The Warrior’s Arsenal) Duramax® 6.6L Turbo-Diesel V8 – $9,890 option, unmatched torque & stamina Allison® 10-Speed Automatic Transmission X31 Off-Road Suspension w/ Rancho Shocks & Skid Plates Auto-Locking Rear Differential 2-Speed Autotrac Transfer Case Gooseneck / 5th Wheel Prep Package – towing dominance with stamped bed holes, harness, & bed-view camera Snow Plow Prep / Camper Package – built to command winter & wilderness alike 12,100 GVWR rating – engineered for true heavy-duty conquest Technology & Control (The Commander’s Edge) ProGrade™ Trailering System + Trailer Brake Controller Digital Variable Steering Assist for precision under load 220-Amp Alternator + Upfitter Switches (5) for gear & upgrades 120V Power Outlets (Cab & Bed) – worksite ready GMC Premium Infotainment System w/ 8" HD Touchscreen Wireless Apple CarPlay® & Android Auto™ 4G LTE Wi-Fi® Capable + OnStar® Services SiriusXM® Ready Interior Luxury (The King’s Quarters) Heated & Ventilated Front Seats + Heated Rear Outboard Seats 10-Way Power Front Buckets w/ Memory Dual-Zone Climate Control Heated, Leather-Wrapped Steering Wheel 60/40 Split-Folding Rear Seat w/ Storage Package Premium Floor Liners Exterior Strength (The Banner You Ride Behind) 20" Machined Aluminum Wheels w/ Black Accents LED Roof Marker Lamps + Red Recovery Hooks Power-Folding/Extending Heated Trailer Mirrors GMC MultiPro Tailgate – six functions, endless adaptability Spray-On Bedliner with AT4 Logo CornerStep & Side Bedsteps – utility with precision LED Headlamps, Fog Lamps, & Cargo Lighting Owner Benefits 3-Year / 36,000-Mile* Bumper-to-Bumper Limited Warranty 5-Year / 100,000-Mile* Powertrain Warranty, Roadside Assistance & Courtesy Transportation First Maintenance Visit Included (*Whichever comes first – see GMC.com or dealer for terms, details & limits) The Sierra 3500HD AT4 is more than a truck. It is a threshold guardian of roads and realms, a machine forged for those who build, conquer, and endure. If you are seeking not just horsepower—but heritage—this is your calling. AutoNation Dodge Ram Broadway 5600 S Broadway, Littleton, CO 80121 720.842.7793 ? Disclaimer: Options and equipment listed are based on manufacturer information at the time of original production. Please confirm all vehicle details with dealer.
