Find your next pre-owned vehicle at Red Rock GMC. Our carefully selected inventory of used cars, trucks, and SUVs offers exceptional value, dependable quality, and competitive pricing. Whether you're searching for a reliable daily driver, a capable truck, or a family-friendly SUV, our team is here to help you find the right vehicle with a simple, transparent, and hassle-free buying experience.

- Duramax 6.6L V8 Turbodiesel with 10-Speed Automatic and 4WD
- Gooseneck/5th Wheel Prep Package
- X31 Off-Road Package with Hill Descent Control and 2-Speed Active Transfer Case
- Heated and Ventilated Front Bucket Seats
- Integrated Trailer Brake Controller with Hitch Guidance and Hitch View
- Bed View Camera with 2 Trailer Camera Provisions
- Remote Vehicle Starter System and Keyless Open & Start
- Premium GMC Infotainment System with Apple CarPlay and Android Auto
- 4G LTE Wi-Fi Hotspot Capable with OnStar & GMC Connected Services
- Spray-On Pickup Box Bed Liner with AT4 Logo
- LED Cargo Area Lighting and 120-Volt Power Outlets
- Front Premium Floor Liners with Removable Carpet Insert
- Heated Steering Wheel
- SiriusXM with 360L and HD Radio

This 2021 GMC Sierra 2500HD AT4 presents a versatile platform designed for both work and weekend adventures. The commanding Duramax diesel engine pairs with a 10-Speed Automatic transmission, delivering the torque and control needed for demanding tasks. The 4WD system ensures capable traction across varied terrain and weather conditions.

The AT4 package establishes this truck as a serious off-road contender. The X31 Off-Road Package includes Hill Descent Control and a 2-Speed Active Transfer Case, allowing you to navigate challenging topography with confidence. The rugged exterior features a painted black surround grille, red recovery hooks, and a spray-on bed liner with the AT4 logo, reinforcing its capable character.

Technology and convenience features enhance daily usability. The truck accommodates wireless phone projection with Apple CarPlay and Android Auto compatibility. Premium floor liners protect the cabin, while heated and ventilated front seats and a heated steering wheel contribute to comfort during cold weather. The integrated trailer brake controller and multiple camera systems simplify towing operations, whether you're managing a gooseneck, fifth wheel, or standard trailer.

Power and comfort permeate the interior. Ten-way power seat adjusters with lumbar support provide customized positioning for both driver and passenger. Dual-zone automatic climate control maintains individual comfort preferences. Multiple USB ports and 120-volt power outlets throughout the cabin and bed support modern device charging and portable equipment.

This Sierra 2500HD AT4 in black demonstrates the durability and capability you expect from GMC's heavy-duty lineup. With thoughtfully integrated packages and features addressing work, towing, and recreational needs, this truck offers genuine utility paired with modern conveniences.

Select Shield includes a 3-month or 3,000-mile limited warranty on select vehicles, valid in all 50 states. Excludes as-is, tax, tow, salvage, or lemon law vehicles. Vehicle information, options, and features may vary due to multiple data sources. Verify all details with the dealer. The dealer is not responsible for errors or omissions. See dealer for complete details.