This 2021 GMC Sierra 1500 AT4 in black presents a capable workhorse designed for those who demand both performance and sophisticated capability.- 3.0L Duramax Turbocharged Diesel I-6 engine with 277 hp and 460 lb-ft of torque- 10-Speed Automatic transmission with 4WD- 20 Machined Aluminum wheels with Carbon Grey Metallic accents- Goodyear Wrangler Territory LT265/60R20 MT Blackwall tires- Premium GMC Infotainment System with Apple CarPlay and Android Auto compatibility- SiriusXM 360L satellite radio with 6-speaker audio system- Off-Road Suspension with Hill Descent Control and auto-locking rear differential- Spray-On Pickup Bed Liner with AT4 logo- Heated and ventilated leather front seats with 10-way power adjustment- Heated second row outboard seats- ProGrade Trailering System with integrated trailer brake controller and hitch guidance- 4G LTE Wi-Fi hotspot capable with OnStar and GMC Connected Services- HD Rear Vision Camera- Remote Vehicle Starter System with keyless open and startThe Sierra 1500 AT4 combines rugged capability with refined comfort. The turbocharged diesel engine delivers strong torque for towing and hauling, while achieving 22 city and 26 highway mpg. The off-road focused suspension and locking rear differential provide confidence on challenging terrain, yet the ride remains composed on daily drives.Inside, the cabin reflects thoughtful design with perforated leather seating for both driver and passenger, complemented by heated and ventilated front seats. Climate control extends to the rear outboard seats as well. The 10-way power driver seat with lumbar adjustment ensures comfort during long hauls, while the premium infotainment system keeps you connected with wireless smartphone integration and satellite radio entertainment.The truck's capability extends to trailering with the ProGrade system, which includes an integrated trailer brake controller and hitch guidance technology with rearview camera integration. These features work together to make towing safer and more manageable. Recovery hooks provide additional assurance when venturing off the beaten path.This Sierra 1500 AT4 stands ready to handle your toughest demands while providing a comfortable, well-equipped cab for the journey. The combination of diesel efficiency, off-road engineering, and premium amenities makes this truck an excellent choice for serious truck owners. We invite you to experience this vehicle firsthand at our showroom.