This 2023 GMC Sierra 3500HD AT4 represents a serious work truck built for demanding tasks and challenging terrain. With its Duramax 6.6L V8 Turbodiesel engine and 10-speed automatic transmission paired with 4WD capability, this Sierra 3500HD delivers the power and traction you need for heavy-duty applications.

- Duramax 6.6L V8 Turbodiesel with 10-Speed Automatic and 4WD
- 2-Speed Active Transfer Case
- ProGrade Trailering System with Integrated Trailer Brake Controller
- X31 Off-Road Package with Hill Descent Control
- Off-Road Suspension with Front Anti-Roll Bar
- Spray-On Pickup Bed Liner with AT4 Logo
- 18 Machined Aluminum Wheels
- Premium GMC Infotainment System with Apple CarPlay and Android Auto
- Heated and Ventilated Leather Front Seats with 10-Way Power Adjustment
- Heated Steering Wheel
- Heated 2nd Row Outboard Seats
- HD Rear Vision Camera with Hitch Guidance and Hitch View
- SiriusXM Satellite Radio with 360L
- Wi-Fi Hotspot Capable with OnStar and GMC Connected Services
- Keyless Open & Start with Remote Vehicle Starter System

The AT4 trim elevates this truck with premium appointments and connectivity features. The interior includes perforated leather-appointed front seats with heating and ventilation, along with heated rear outboard seats for passenger comfort. The 10-way power driver and passenger seat adjusters with lumbar support ensure you stay comfortable during long workdays. The heated steering wheel and automatic temperature control add convenience throughout the year.

Technology keeps you connected and in control. The premium GMC infotainment system integrates Apple CarPlay and Android Auto compatibility, while the 4.2 color driver information center provides trip data and vehicle diagnostics. Multiple USB ports throughout the cabin—including 2nd row dual USB charge-only ports—keep devices powered. Wi-Fi hotspot capability and OnStar connectivity options mean you're never disconnected, whether in the field or on the job site.

Trailering capability defines this Sierra 3500HD's purpose. The ProGrade Trailering System with integrated trailer brake controller manages heavy loads with precision. Hitch guidance with integrated hitch view camera and the in-vehicle trailering system app simplify hookup and maneuvering. The 3.73 rear axle ratio optimizes towing performance, while red recovery hooks provide additional security for your cargo.

Safety and visibility are engineered throughout this truck. The standard four-wheel disc ABS brakes deliver responsive stopping power. Electronic stability control, traction control, and hill descent control work together to maintain control on varied terrain. Multiple airbags protect occupants, while the HD rear vision camera with hitch view provides critical visibility during reversing and hitching operations.

The exterior reflects the AT4's capable design. This white Sierra 3500HD features a painted black surround grille with high-gloss black mesh, LED cargo area lighting, and auto-dimming side mirrors. The spray-on bed liner with AT4 logo protects the cargo area from daily wear. Body-color bumpers and a rear step bumper complete the purposeful appearance.

This 2023 GMC Sierra 3500HD AT4 is ready to work while delivering the comfort and technology you expect from a premium truck. We invite you to experience its capabilities firsthand at our showroom.