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2021 GMC Sierra 3500HD AT4
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Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock #
25-030A
Trim Details
AT4
2021 GMC Sierra 3500 HD SRW AT4 – The Ultimate Heavy-Duty Off-Road Performer
🔥 INDUSTRY-LEADING DURAMAX POWER
✔ 6.6L Duramax Turbo-Diesel V8 (445 HP / 910 lb-ft torque) – Best-in-class torque ✔ Allison® 10-Speed Automatic Transmission – Unmatched towing smoothness ✔ AT4 Off-Road Package – Enhanced for rugged terrain ✔ Up to 18,500 lbs conventional towing – Built to work
🏔️ AT4 OFF-ROAD CAPABILITY
✔ 2-inch factory lift – Increased ground clearance ✔ Rancho® monotube shocks – Off-road tuned suspension ✔ Skid plates – Critical component protection ✔ Hill Descent Control – Confident downhill braking ✔ All-terrain tires – 18-inch or available 20-inch wheels
💎 PREMIUM COMFORT & TECHNOLOGY
✔ AT4-exclusive leather-appointed seats – Heated/ventilated front seats ✔ 15-inch multicolor Head-Up Display – Keeps eyes on the trail ✔ 13.4-inch diagonal touchscreen – With navigation & Google Built-In ✔ Bose® Premium Audio System – 12-speaker surround sound ✔ MultiPro Tailgate – 6 functions for ultimate utility
🛡️ ADVANCED SAFETY FEATURES
✔ GMC Pro Safety Plus Package:
Automatic Emergency Braking
Adaptive Cruise Control
Lane Keep Assist
HD Surround Vision ✔ Trailer Camera Provisions – Up to 9 camera views ✔ Integrated Trailer Brake Controller
📌 WHY THIS SIERRA 3500 HD AT4?
✅ Most capable off-road heavy-duty truck ✅ Luxury interior with work-ready capability ✅ Duramax reliability built for 250,000+ miles ✅ Stronger resale value than competitors
📞 SCHEDULE YOUR TEST DRIVE TODAY!
VSA DEALER #10374
Packages & Options
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