2021 GMC Sierra 2500HD AT4

Meet the 2021 GMC Sierra 2500HD AT4, a heavy-duty truck engineered to handle serious work and deliver commanding presence on any road. This black powerhouse combines rugged capability with premium comfort, making it an exceptional choice for those who demand both performance and refinement.

- Duramax 6.6L V8 Turbodiesel engine with 445 hp and 910 lb-ft of torque
- 10-Speed Automatic transmission with 4WD
- AT4 Premium Plus Package with premium features and enhancements
- Gooseneck/5th Wheel Package with bed view camera and trailer camera provisions
- Power-retractable black assist steps with LED lighting
- Heated and ventilated front bucket seats with leather interior
- Power sunroof and power driver/passenger seats with memory functions
- Premium GMC Infotainment System with Apple CarPlay and Android Auto
- Blind spot monitor, lane departure warning, and forward collision alert
- Multicolor 15" head-up display with 8" driver information center
- Ultrasonic front and rear park assist with HD surround vision
- Alloy wheels with new tires
- Rear backup camera and bed view camera system

The Sierra's turbocharged diesel engine delivers the torque you need for towing and hauling, while the heavy-duty front spring and camper package provides the structural support for demanding applications. At 95,756 miles, this truck shows responsible use and remains well within its operational prime, backed by the durability GMC diesel owners trust.

Inside, the cabin reflects AT4's commitment to comfort during long drives. Leather seating surfaces, heated and ventilated front seats, and a heated steering wheel create an environment focused on driver and passenger wellbeing. The power sunroof adds natural light and ventilation, while dual-zone automatic climate control keeps everyone comfortable regardless of conditions.

Technology integration throughout the Sierra prioritizes both connectivity and safety. The premium infotainment system responds to your smartphone through Apple CarPlay and Android Auto, keeping you connected without distraction. The blind spot monitor, lane departure warning system, and forward collision alert work together as active safety layers. The multicolor head-up display projects essential information directly into your line of sight, reducing the need to look away from the road.

The truck bed is equipped with a spray-on liner featuring the AT4 logo, protecting your cargo investment while maintaining the truck's aesthetic. The bed view camera combined with trailer camera provisions transforms backing up and hitchingâ€"critical features when precision matters. Wireless phone projection and a 4G LTE Wi-Fi hotspot capable system ensure you stay connected wherever the road takes you.

This 2021 Sierra 2500HD AT4 represents a significant investment in capability, comfort, and reliability. We invite you to schedule a test drive and experience firsthand how this truck responds to both highway cruising and off-road demands.