2026 GMC Sierra 2500 HD for Sale in Mexia, TX

Trim Levels and Powertrains

The 2026 GMC Sierra 2500HD offers seven distinct trim levels to match your specific needs and preferences: Pro, SLE, SLT, AT4, AT4X, Denali, and Denali Ultimate. Each trim provides a unique combination of features, allowing you to select the perfect configuration for your lifestyle and work requirements.

Powering the Sierra 2500HD lineup features two key engine options. The base 6.6-liter V8 gasoline engine delivers 401 horsepower and 464 pound-feet of torque, with Direct Injection and Variable Valve Timing for improved performance. For heavy-duty towing and hauling, there's an optional 6.6-liter Duramax™ turbodiesel V8, which generates 470 horsepower and 975 pound-feet of torque. With proper configuration, the Sierra 2500HD can tow up to 22,500 pounds and handle a maximum payload of 4,000 pounds..

Interior Comfort and Convenience

The 2026 GMC Sierra 2500HD proves that a heavy-duty truck can offer exceptional interior refinement. Depending on the trim level, you'll find a range of seating options, from durable vinyl and cloth to luxurious perforated leather and full-grain leather. The spacious cabin accommodates up to six passengers in most configurations, with generous legroom and headroom throughout.

Standard features across the lineup include power door locks, power windows with driver express up/down, and cruise control with steering wheel-mounted controls. Higher trim levels add dual-zone automatic climate control, heated and ventilated front seats, heated second-row outboard seats, and, on premium trims, available 16-way power-adjustable front seats with lumbar support and massage functions.

The GMC MultiPro™ Tailgate, available on select trims, offers six functional load and access features that enhance versatility. Premium floor liners with removable carpet inserts provide both protection and refinement. At the same time, the up-level rear seat with storage package includes a fold-out center armrest with cupholders and full cab-width under-seat storage.

Advanced Technology Features

Stay connected and entertained with the Sierra 2500HD's advanced tech. The Pro trim has a 7.0-inch GMC Infotainment System, while SLE and higher trims upgrade to a 13.4-inch Premium system with Google apps, navigation, and voice assistance. Wireless Apple CarPlay®, Android Auto™, and Bluetooth streaming come standard. The In-Vehicle Trailering App offers trailer checklists, maintenance, security alerts, and tire pressure monitoring. Hitch Guidance with Hitch View includes image adjustment for easy hitching. Higher trims add a 15-inch Head-Up Display and Rear Camera Mirror.

Other features include wireless charging, USB ports, SiriusXM® with 360L, and available Bose audio. The Denali Ultimate adds a 12-speaker Bose Premium system with CenterPoint, Richbass, and AudioPilot.

Safety and Driver Assistance

GMC prioritizes safety with the Sierra HD Pro Safety suite, including Forward Collision Alert, Automatic Emergency Braking, Front Pedestrian Braking, Lane Departure Warning, IntelliBeam high beams, and Following Distance Indicator. The StabiliTrak system features Proactive Roll Avoidance, trailer sway control, and hill start assist. Available driver assists include Adaptive Cruise Control, HD Surround Vision, and Trailer Blind Zone Alert, among others. Teen Driver technology allows customized vehicle settings for safe driving, while OnStar® offers Automatic Crash Response and emergency services..