This 2021 GMC Sierra 1500 AT4 delivers commanding capability with refined comfort, ready to handle any task while providing a premium driving experience.- One-owner local trade with clean Autocheck history- EcoTec3 6.2L V8 with 420 hp and 460 lb-ft of torque- 20 machined aluminum wheels with carbon grey metallic accents- Heated and cooled leather seats with 10-way power adjustments- Android Auto and Apple CarPlay integration- Blind-spot monitors with hitch guidance and integrated trailer brake controller- Premium Kicker audio system with SiriusXM 360L- Keyless access with push-button start- Remote vehicle starter system- Spray-on bed liner with AT4 logo- 120-volt bed-mounted and instrument panel power outlets- Off-road suspension with hill descent control and auto-locking rear differential- Trailering package with ProGrade systemThe powerful 6.2L V8 engine uses advanced Dynamic Fuel Management technology, operating in 17 different patterns to optimize both performance and efficiency as driving conditions demand. With 420 horsepower on tap, this truck delivers the authority you need for towing and hauling while maintaining the refinement expected in this class.Inside, the AT4 surrounds you with premium appointments. Perforated leather seats with heating and ventilation keep you comfortable in any season, while the 10-way power driver and passenger seat adjusters with lumbar support let you dial in your ideal position. The heated steering wheel and automatic temperature control make every drive more pleasant, whether you're navigating city streets or heading out on adventure.Technology integrates seamlessly into your daily routine. The premium GMC Infotainment System with multi-touch controls works flawlessly with your smartphone via Apple CarPlay and Android Auto. SiriusXM 360L satellite radio keeps you entertained, while the Kicker audio system delivers impressive sound quality. Multiple USB ports and 120-volt outlets throughout the cabin keep your devices powered.For trailering and hauling, GMC equipped this Sierra with serious capability. The Trailering Package includes ProGrade components, an integrated trailer brake controller, and hitch guidance with hitch view to assist with backing up your trailer. Red recovery hooks and an auxiliary external transmission oil cooler support heavy-duty work, while the spray-on bed liner with AT4 logo protects your cargo area.This AT4 combines the rugged capability GMC is known for with the comfort and convenience today's truck owners expect. One careful owner and a clean history mean you're buying with confidence. Visit us to experience the commanding presence and refined capability this Sierra delivers.