
The 2021 GMC Sierra 1500 AT4 is a rugged and capable off-road pickup that's ready to take on any adventure. Equipped with a powerful 3.0L I6 Duramax Diesel engine and 4-wheel drive, this Sierra AT4 delivers impressive performance and capability.
- Engine Block Heater
- 3.0L I-6 Diesel Turbocharged (Duramax) (277 hp, 460 lb-ft of torque)
- AT4 Preferred Package (Universal Home Remote, Rear Sliding Power Window, Premium GMC Infotainment with Navigation, Bose Premium Audio System, Wireless Charging)
- LT275/65R18C MT Blackwall Goodyear Wrangler DuraTrac Tires
This Sierra AT4 is packed with premium features to enhance your driving experience, including a Bose premium audio system, wireless charging, and an 8-inch diagonal premium GMC Infotainment system with navigation. The off-road-tuned suspension and 4-wheel drive system ensure you can tackle any terrain with confidence.
The exterior of the Sierra AT4 makes a bold statement with its rugged good looks. The body-color grille surround, 18-inch machined aluminum wheels, and spray-on bedliner with the AT4 logo all contribute to the truck's tough, capable appearance.
Inside, the Sierra AT4 offers uncompromising comfort and convenience. Heated and ventilated front seats, a heated steering wheel, and dual-zone automatic climate control keep you comfortable no matter the weather. The premium leather-appointed seating and brushed aluminum accents create a refined, premium cabin environment.
This 2021 GMC Sierra 1500 AT4 is the perfect blend of power, capability, and luxury. Experience the ultimate in off-road performance and premium features. Visit our showroom today to take this Sierra AT4 for a test drive.


