Discover the latest lineup of new GMC trucks and SUVs at Red Rock GMC. From the rugged Sierra to the versatile Acadia and luxurious Yukon, you'll find Professional Grade capability, advanced technology, and exceptional comfort in every model. Our team is here to help you find the right GMC with a straightforward, hassle-free buying experience.

- Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque
- AT4 Premium Plus Package with power sunroof and Technology Package
- Gooseneck/5th Wheel Prep Package with hitch platform
- Power-retractable black assist steps with LED lighting
- Multicolor 15" Head-Up Display with advanced driver information
- HD Surround Vision camera system with trailer camera provisions
- Bose Premium 7-Speaker sound system with SiriusXM 360L
- Heated and ventilated front seats with 10-way power adjustment
- Wireless smartphone charging and Apple CarPlay/Android Auto compatibility
- Automatic emergency braking with forward collision alert
- Ultrasonic front and rear park assist with trailer side blind zone alert
- Power sunroof and automatic climate control with front dual-zone operation
- 20" high gloss black aluminum wheels with all-weather floor liners
- X31 Off-Road Package with hill descent control and off-road suspension

This 2026 Sierra 2500HD AT4 arrives in striking silver with professional-grade engineering built for serious work and refined daily driving. The legendary Duramax diesel engine delivers substantial power and torque while maintaining the reliability you expect from GMC's Heavy-Duty lineup. Ten-speed automatic transmission and 4WD capability provide confident control on any road surface, whether you're navigating city streets or challenging terrain.

The AT4 Premium Plus Package elevates this truck with premium comfort and capability features. Heated and ventilated seats keep you comfortable through changing seasons, while the power sunroof adds an open-air atmosphere to the spacious cab. The 15-inch head-up display provides critical driving information at a glance, allowing you to keep your focus on the road ahead.

The gooseneck and fifth-wheel prep package positions this Sierra for serious towing applications. The hitch platform accepts both gooseneck and fifth-wheel hitches, with stamped bed holes and a bed-mounted seven-pin trailer harness ready for immediate use. This thoughtful engineering eliminates retrofit requirements and protects your investment.

Technology seamlessly integrates throughout the cab. The HD Surround Vision system with trailer camera provisions gives you complete visibility during hitching and maneuvering. Wireless smartphone projection with Apple CarPlay and Android Auto keeps you connected, while the Bose audio system with SiriusXM 360L provides premium sound quality for every drive. Ultrasonic park assist and trailer side blind zone alert add practical safety to every maneuver.

Built for durability and long-term dependability, this Sierra 2500HD includes an engine block heater, 220-amp alternator, and heavy-duty 80-amp battery to support demanding work cycles. The spray-on bedliner with GMC logo and all-weather floor liners protect your investment from the elements. Off-road suspension and the X31 Off-Road Package with hill descent control demonstrate GMC's commitment to capable, confident performance.

Whether you're outfitting your fleet or upgrading your personal truck, this 2026 Sierra 2500HD AT4 combines professional-grade capability with premium comfort and advanced technology. Schedule your visit to experience this truck's commanding presence and refined engineering.

Select Shield includes a 3-month or 3,000-mile limited warranty on select vehicles, valid in all 50 states. New vehicles receive coverage beginning after the manufacturer's basic warranty ends. Excludes as-is, tax, tow, salva