2021 GMC Sierra 1500 AT4 3.0L Duramax
Premium off-road capability meets refined diesel performance in this 2021 GMC Sierra 1500 AT4 Duramax, a rugged full-size truck built to handle tough terrain while delivering upscale comfort and advanced technology. Under the hood is the smooth and efficient 3.0L Duramax turbo-diesel inline-6 producing 277 horsepower and 460 lb-ft of torque, paired with a refined 10-speed automatic transmission and a capable 4x4 system for confident performance in all conditions. With impressive low-end torque, a quiet diesel powertrain, and excellent ride quality, the Sierra AT4 offers both serious capability and everyday comfort. The AT4 trim is built for adventure, featuring a factory 2-inch suspension lift, Rancho monotube shocks, skid plates, hill descent control, red recovery hooks, and an automatic locking rear differential for enhanced off-road performance. Inside, the cabin blends rugged styling with premium finishes, offering leather-appointed seating, heated front seats, a heated steering wheel, Bose premium audio, navigation, and a touchscreen infotainment system with Apple CarPlay & Android Auto. The bold AT4 styling, dark accents, and aggressive stance give this Sierra a commanding presence on the road or trail. With its no reported accident history, this truck delivers added peace of mind along with premium diesel capability.
✅ 3.0L Duramax Turbo-Diesel Inline-6 — 277 HP and 460 lb-ft of torque
✅ 10-Speed Automatic Transmission with 4x4
✅ AT4 Package — Factory 2" lift & off-road suspension
✅ Rancho Shocks, Skid Plates & Red Recovery Hooks
✅ Leather Interior with Heated Front Seats & Heated Steering Wheel
✅ Navigation, Bose Premium Audio & Smartphone Integration
✅ No Reported Accidents
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