Key Features of the 2025 GMC Sierra 2500 HD

6.6L V8 & Duramax® 6.6L Turbo-Diesel Powertrains

The heart of the 2025 GMC Sierra 2500 HD is its range of robust engine options. Standard across the lineup is the 6.6L V8 gas engine paired with the remarkable Allison® 10-speed automatic transmission, delivering responsive torque, fast gear shifts, and a smooth overall drive. For those requiring even more strength, the available Duramax® 6.6L Turbo-Diesel V8, also mated to the Allison® 10-speed, sets new standards for towing and payload capacity. With this setup, the Sierra 2500 HD can conventionally tow up to 20,000 lbs and supports a maximum gooseneck/fifth-wheel trailer rating of 21,870 lbs—making it ideal for heavy hauling, work trailers, or recreational vehicles. This engine’s refined power ensures steady acceleration and confidence whether you’re navigating urban traffic or open highways. For owners in and around Georgetown or Bee Cave, the Sierra 2500 HD is built to conquer every task without compromise.

GMC MultiPro™ Tailgate

Leading the segment with its innovative approach to utility, the GMC MultiPro™ Tailgate is both functional and versatile. Available on most trims and standard on the SLT and above, the MultiPro™ Tailgate offers six distinct functions. These include a primary gate, a full-width step for safe bed access, a load stop for longer items, an inner gate work surface, and more. This design simplifies loading and unloading—whether you’re carrying tools to a job site or transporting recreational equipment for a weekend getaway. With the optimal bed height for comfortable lift-in and the largest cargo box volume in its class, loading bulky or heavy items becomes less of a chore. Upgrade options, such as the MultiPro Tailgate Audio System by Kicker®, further enhance the experience, making your tailgate parties or job breaks more enjoyable and convenient near Austin, TX.

Premium GMC Infotainment System with Google Built-In

The 2025 Sierra 2500 HD elevates technology with its available 13.4-inch diagonal GMC Premium Infotainment System, incorporating Google built-in for a truly connected drive. Standard on SLE and above trims, this state-of-the-art system delivers a rich user experience with customizable screens, navigation, and seamless access to your favorite apps. The digital Driver Information Center complements the main display, keeping critical driving data front and center. Wireless compatibility for Apple CarPlay® and Android Auto™ is also standard, allowing drivers in the Austin area to stay connected safely, handle calls, or stream music without fumbling with wires. Add the available Bose® Premium Sound System for concert-level audio, and the Sierra 2500 HD’s cabin becomes your personal command center—ideal for both everyday commutes and long road trips.

Comprehensive Safety Suite: Sierra HD Pro Safety

Every 2025 Sierra 2500 HD comes equipped with Sierra HD Pro Safety, ensuring advanced protection for driver and passengers alike. This suite features Forward Collision Alert, Lane Departure Warning, Following Distance Indicator, Automatic Emergency Braking, Front Pedestrian Braking, IntelliBeam® automatic high beams, and the Buckle to Drive system. These intelligent technologies work together to help avoid or mitigate accidents on city streets or highways. Enhancements like up to 13 available camera views—including industry-first transparent trailer view and HD Surround Vision—as well as Adaptive Cruise Control with trailering, provide an added layer of security. Whether you’re maneuvering through Austin traffic or backing up a trailer on your property, you have the confidence that comes from premium engineering and leading-edge driver assistance.

Best-in-Class Crew Cab Comfort & Interior Utility

Inside, the 2025 Sierra 2500 HD makes no compromise on comfort. Crew Cab models boast best-in-class front head and leg room, allowing all occupants—driver and passengers alike—to stretch out and enjoy the ride. Attention to detail is visible in the quality of materials used, from soft-touch surfaces to available perforated leather appointments. The spacious rear seating in Crew Cab configurations ensures even backseat passengers won’t feel cramped during extended drives. Available amenities include heated and ventilated 10-way or even 16-way power front seats, dual-zone automatic climate control, a heated steering wheel, and smart storage throughout the cabin. Whether you’re on a job site near Georgetown or traveling through the Texas Hill Country, the interior of the Sierra 2500 HD is engineered for enduring comfort and practical utility.