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.

- 6.6L V8 Diesel Turbocharged (Duramax) engine with 470 hp and 975 lb-ft of torque
- 10-Speed Automatic transmission with 4WD
- Off-Road Suspension and 2-Speed Active Transfer Case
- Multicolor 15" Diagonal Head-Up Display
- GMC Premium 13.4" Diagonal Information Display
- Premium GMC Infotainment System with SiriusXM 360L
- Bose Premium 7-Speaker Sound System
- Heated and Ventilated Front Seats with 10-Way Power Adjustment
- Heated Steering Wheel
- HD Surround Vision with Bed View Camera and Trailer Camera Provisions
- Ultrasonic Front and Rear Park Assist with Hitch Guidance
- Automatic Emergency Braking with Front Pedestrian Braking
- All-Weather Floor Liners and Premium Rear Floor Liners with Removable Carpet Insert
- 20" High Gloss Black 8 Spoke Aluminum Wheels
- X31 Off-Road Package and AT4 Premium Plus Package

The 2026 GMC Sierra 3500HD AT4 arrives with the legendary Duramax 6.6L turbodiesel engine, engineered to deliver commanding power and efficiency on any terrain. With 975 lb-ft of torque at your command, this truck handles demanding work and towing with unmatched capability. The advanced 10-Speed Automatic transmission paired with 4WD and a 2-Speed Active Transfer Case ensures smooth power delivery whether you're navigating city streets or challenging off-road conditions.

Inside the cabin, you'll find a sanctuary designed for both comfort and control. The Bose Premium 7-Speaker Sound System fills your space with premium audio quality, while the GMC Premium Infotainment System with SiriusXM 360L keeps you connected and entertained. The Multicolor 15" Head-Up Display projects critical information directly into your line of sight, reducing distractions while driving. Dual-zone automatic climate control, heated and ventilated front seats, and a heated steering wheel ensure your comfort in any season.

Safety and awareness features work together to protect you and your passengers. The HD Surround Vision system with Bed View Camera and multiple trailer camera provisions gives you complete visibility around your truck. Ultrasonic Front and Rear Park Assist removes guesswork from tight spaces, while Automatic Emergency Braking and Front Pedestrian Braking provide added peace of mind. Lane Departure Warning, Rear Cross Traffic Alert, and Trailer Side Blind Zone Alert actively monitor your surroundings.

This AT4 model comes equipped with premium all-weather floor liners and removable carpet inserts, protecting your investment while maintaining interior appeal. The spray-on pickup bedliner with GMC logo provides durable cargo protection. LED cargo area lighting and automatic high-beam headlights enhance functionality and safety. The truck sits on 20" High Gloss Black aluminum wheels, complemented by off-road styling cues including black power-retractable assist steps and heated power mirrors with turn signal indicators.

The X31 Off-Road Package and AT4 Premium Plus Package deliver serious capability for adventurous driving. Off-Road High Clearance Steps, Hill Descent Control, and an Exhaust Brake combine with the sophisticated suspension to handle rutted trails and steep grades confidently. Wireless device charging and wireless phone projection keep your technology integrated seamlessly into your daily life.

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, salvage, or lemon l