The 2026 GMC Sierra 2500 brings impressive capability through a powerful engine lineup and heavy duty construction. Its standard 6.6 liter V8 gas engine works with a 10 speed automatic transmission to deliver dependable performance for tough jobs, long hauls and routine driving. For those who need even more pulling strength, the available Duramax 6.6 liter turbo diesel V8 produces 470 horsepower and 975 lb ft of torque for outstanding towing confidence.

When properly equipped, the 2026 GMC Sierra 2500 can tow up to 21,870 pounds, giving drivers the strength to move large trailers, work equipment, boats and more. The available ProGrade Trailering System and in vehicle trailering app help simplify hauling by giving you greater visibility, control and confidence. With advanced trailering assistance technologies and Tow Haul mode, this heavy duty pickup is ready for demanding tasks.

• Available Duramax 6.6 liter turbo diesel V8 with 470 horsepower and 975 lb ft of torque
• Standard 6.6 liter V8 gas engine with 10 speed automatic transmission
• Maximum towing capacity up to 21,870 pounds
• Available ProGrade Trailering System with in vehicle trailering app
• Traction Select System with Tow Haul mode
• Available off road suspension with Rancho shocks and skid plates

The 2026 GMC Sierra 2500 offers smart, user-friendly technology to keep drivers connected, informed and in command. An available 13.4 inch diagonal center touchscreen provides a large, easy-to-use display for entertainment, navigation and vehicle settings. A 12.3 inch digital Driver Information Center places key driving details and alerts directly in view, helping you access important information quickly.

Wireless Apple CarPlay and wireless Android Auto compatibility make smartphone integration simple without requiring cords. Available premium features further enhance the driving experience, including a Bose premium audio system with 12 speakers, an available Head Up Display and the MultiPro Tailgate Audio System by Kicker. Together, these technologies help make every drive more convenient and enjoyable.

• 13.4 inch diagonal touchscreen infotainment system
• 12.3 inch digital Driver Information Center
• Wireless Apple CarPlay and wireless Android Auto compatibility
• Available Bose premium audio system with 12 speakers
• Available Head Up Display with key driving information
• MultiPro Tailgate Audio System by Kicker

The 2026 GMC Sierra 2500 is designed with advanced safety and driver assistance features that help support awareness on the road and at the job site. Available Adaptive Cruise Control with trailering capability can help reduce fatigue during long drives by automatically adjusting speed to maintain a selected following distance, even while towing. This makes highway travel and heavy hauling feel more controlled and convenient.

Visibility is another major strength of the 2026 GMC Sierra 2500. With up to 14 available camera views, including Transparent Trailer View, drivers can better monitor trailers, surroundings and tight spaces. HD Surround Vision, the available Rear Camera Mirror and additional trailering assistance technologies help improve confidence when backing up, changing position or maneuvering through busy areas.

• Available Adaptive Cruise Control with trailering capability
• Up to 14 available camera views including Transparent Trailer View
• HD Surround Vision for enhanced visibility
• Advanced trailering assistance technologies
• Available Rear Camera Mirror
• Integrated trailer brake controller

The 2026 GMC Sierra 2500 interior combines heavy duty practicality with premium comfort. Higher trims offer upscale materials such as available full grain leather seating surfaces and authentic wood trim, creating a refined cabin environment. The available 16 way power front seats with massage functionality help provide exceptional support during long workdays, road trips or towing journeys.

Comfort-focused features like heated and ventilated front seats, a heated steering wheel and spacious seating make the cabin well suited for both professional use and family travel. Thoughtful storage options and durable materials add everyday functionality, while detailed craftsmanship gives the Sierra 2500 a more premium feel. This balance of comfort and capability helps the truck stand out in the heavy duty segment.

• Available 16 way power front seats with massage feature
• Available full grain leather seating surfaces
• Heated and ventilated front seats
• Heated steering wheel
• Authentic wood trim accents
• Spacious cabin with premium materials

The 2026 GMC Sierra 2500 exterior has a strong, commanding look that reflects its heavy duty performance. Bold design elements, including the available Vader Chrome grille and available 20 inch machined aluminum wheels, give select trims a confident and upscale presence. The available MultiPro Tailgate adds practical versatility with multiple configurations that help with loading, unloading and reaching items in the cargo bed.

Functionality is built into the Sierra 2500 exterior from every angle. Available power assist steps make cabin and bed access easier, while AT4 trims add off road suspension components, skid plates and rugged styling cues for tougher terrain. With durable construction and purposeful design details, the 2026 GMC Sierra 2500 is built to look capable and work hard.

• Available MultiPro Tailgate with multiple configurations
• Available 20 inch machined aluminum wheels
• Signature Vader Chrome grille on premium trims
• Available power assist steps
• Off road suspension and skid plates on AT4 trims
• Durable heavy duty truck design