2025 GMC Sierra 2500 HD near Castle Rock, CO
2025 GMC Sierra 2500 HD Overview
Capability, refinement, and advanced technology meet in the 2025 GMC Sierra 2500 HD, a heavy-duty truck engineered to carry big loads and even bigger ambitions. At Alpine Buick GMC South, our team understands what hard-working drivers expect from a pickup, and we pair that know-how with a curated inventory and expert guidance. From jobsite grit to family road trips, this truck is built to perform with confidence, offering available ProGrade® Trailering tech, best-in-class Crew Cab front legroom, and up to 14 available camera views for smarter visibility. For shoppers near Castle Rock, CO, the combination of strength, comfort, and thoughtful features makes the Sierra HD stand out day after day. Whether prioritizing an off-road-focused AT4/AT4X or the detail-rich Denali trims, we help match you to the configuration that fits your towing and lifestyle demands. Ask us about the 2025 GMC Sierra 2500 HD near Castle Rock, CO and how its cab, bed, and 2WD/4WD choices adapt to your work and weekend plans. Drivers from Pueblo and Canon City also choose our store for our straightforward, professional support and factory-trained service that keeps every mile productive and enjoyable.
Exterior - GMC Dealer serving Castle Rock, CO
The Sierra HD projects authority the moment it arrives. A strong, confident stance, bold grille designs, and LED projector headlamps with signature animated lighting sequences make it look every inch the premium pulling machine. Sierra HD optimizes real-world utility with a bed designed for work—offering more heavy-duty cargo bed volume than any competitor in its class—plus a height tailored to make lift-in loading more comfortable and to help with gooseneck/fifth-wheel clearance. Available trailering mirrors with power extension, power-folding, auto-dimming upper glass, perimeter lighting, amber clearance lamps, and auxiliary spot lamps improve your view around truck and trailer. The world’s first MultiPro Tailgate brings six helpful functions that simplify loading, unloading, and reaching into the bed; add the available MultiPro Tailgate Audio System by KICKER® to bring sound to the jobsite or campsite. Available spray-on bedliner, power-retractable assist steps with LED perimeter lighting, multiple tiedowns, and CornerStep rear bumper steps round out the smart utility. With 17-, 18-, or 20-inch wheel options, a choice of bed lengths, and trims ranging from SLT to Denali Ultimate, Alpine Buick GMC South can tailor the look and capability that match how you work and play.
Interior - 2025 GMC Sierra 2500 HD near Castle Rock, CO
Climb into a cabin designed for long-haul comfort and all-day productivity. The 2025 Sierra Heavy Duty features best-in-class Crew Cab front legroom, so you can settle into supportive seats and stretch out with confidence. SLE and SLT trims add a 13.4-inch diagonal GMC Premium Infotainment System with Google built-in, plus a 12.3-inch diagonal digital Driver Information Center that places key data front and center. Wireless Apple CarPlay® and Android Auto™ compatibility streamlines your daily routine, while available Bose® Premium audio adds immersive sound. Dual-zone automatic climate control can actively heat or cool the cabin to your preferred setting, and available heated front seats, ventilated front seats, and a heated steering wheel help you dial in comfort year-round. Rear passengers will appreciate generous leg room on Crew Cab models, complemented by smart storage solutions, rear air vents, and available USB-C ports to keep devices powered. Thoughtful touches—like an available power sunroof and premium materials on SLT, Denali, and Denali Ultimate—elevate every commute. Whether you’re making jobsite rounds or cruising near Castle Rock, CO, this is a workspace and retreat built to keep you alert, organized, and refreshed mile after mile.
GMC Sierra 2500 HD Mechanical specs
Underneath the high-strength sheet metal lies a chassis engineered to earn its keep. The Sierra HD frames in stout ride-and-handling manners, balancing heavy-load control with a planted highway feel. Choose 2WD or 4WD configurations and the cab and bed combination that best suits your needs, from Regular Cab Long Bed to Crew Cab Long Bed. For adverse terrain and rugged job sites, the X31 Off-Road Package adds twin-tube Rancho shocks and skid plates for additional underbody protection. Step up to AT4 for an off-road suspension calibration designed for backcountry trails, or to AT4X for a factory-installed 1.5-inch lift with Multimatic® DSSV dampers and a rear electronic-locking differential that helps both rear wheels turn together when traction is scarce. Trailering confidence comes courtesy of an integrated trailer brake controller and the available ProGrade® Trailering System with In-Vehicle Trailering App—offering customizable profiles, pre-departure checklists, and tire pressure and temperature monitoring for compatible trailers. Up to 14 available camera views, including HD Surround Vision and Transparent Trailer View, support low-stress maneuvering. If your daily demands include the 2025 GMC Sierra 2500 HD near Castle Rock, CO, these systems lighten the workload and help you make the most of every mile.
Powertrain - GMC Dealership near Castle Rock, CO
Power comes standard with a 6.6L V8 gas engine paired to the Allison® 10-speed automatic transmission, delivering confident acceleration and smooth, consistent power under heavy loads. For maximum pulling strength, the available Duramax® 6.6L Turbo-Diesel V8 with the Allison 10-speed provides abundant torque, an integrated Exhaust Brake, and exceptional control when hauling serious weight. The 2025 GMC Sierra 2500 HD offers maximum available conventional trailering up to 20,000 lbs and up to 21,870 lbs for gooseneck/fifth-wheel when properly equipped, supported by a max available GCWR up to 30,000 lbs. Tow/Haul mode and the Traction Select System work with the transmission’s close ratios to help optimize performance with varying loads and grades. Smart cooling strategies, robust driveline components, and available 4WD with a two-speed transfer case provide durability and control whether you’re towing equipment to the site or a camper into the mountains. These powertrains are designed to deliver consistent performance in high-altitude environments and on hot summer days, and are complemented by gearing and braking technologies that help you stay steady and composed with a trailer. The 2025 GMC Sierra 2500 HD proves that heavy-duty power and refined manners can coexist.
Safety - 2025 GMC Sierra 2500 HD dealer
Confidence is not an afterthought with Sierra HD Pro Safety, a suite of active safety and driver-assistance features included on every Sierra Heavy Duty. Forward Collision Alert, Automatic Emergency Braking, Lane Departure Warning, Following Distance Indicator, Front Pedestrian Braking, IntelliBeam, and Buckle to Drive help support awareness in everyday traffic. Available Adaptive Cruise Control with trailering takes into account the added drag and increased braking distances when you’re towing, helping maintain smoother gaps on the highway. Up to 14 available camera views—such as HD Surround Vision, Bed View Camera, and the industry-first Transparent Trailer View—assist with parking, hitching, and lane changes with a compatible trailer. An available Rear Camera Mirror can broaden your rearward perspective, especially useful when the bed is fully loaded. The available multicolor 15-inch diagonal Head-Up Display can present speed and alerts in your line of sight, and OnStar services provide enhanced peace of mind, including the OnStar Guardian® app for 24/7 help on the go. Our team can walk you through feature availability by trim and recommend the right driver-assistance combinations for your needs, ensuring your truck works as hard at protecting you as it does at pulling your payload.
Request more 2025 GMC Sierra 2500 HD near Castle Rock, CO information
When your day demands capability without compromise, the Sierra Heavy Duty is the tool you can trust. From its high-strength frame and advanced trailering technologies to its spacious cabin and thoughtful amenities, it’s built to go the extra mile on your schedule. If you’re considering a 2025 GMC Sierra 2500 HD for your business, ranch, or travel adventures, our specialists will help you navigate cab, bed, 2WD/4WD, and trim choices to build a truck that feels purpose-built for your life. We back that guidance with factory-trained service and genuine parts support to keep your heavy-duty investment performing at its best. Alpine Buick GMC South welcomes you to explore our inventory, test the technology, and experience the confidence this truck inspires from the driver’s seat. Whether you’re planning the next big job or the next big weekend, the 2025 GMC Sierra 2500 HD is ready—so are we, with answers, walkarounds, and a seamless process from selection to delivery.
Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
Dealer Discount applied to everyone
Prices include all active discounts, incentives and $689.50 dealer handling fee. Prices exclude tax, tag, title, and dealer-installed accessories. $2,499 will be added to all new vehicle prices for our Alpine Package add-on that includes the following: ikon tracking package, clear bra, window tint, and a lifetime powertrain warranty. Additional discounts and rebates may be applied depending on the zip code of where the vehicle will be titled. For the maximum discount, you must purchase from in-stock inventory and finance with GM Financial. GM Financial financing rebates, APR and lease rates can vary based on zip code and individual credit score. While we make every effort to ensure the information listed on our website is correct, there may be instances of errors resulting in vehicle prices, options and/or features to be listed incorrectly. The dealer is not responsible for any of these errors. Please contact a dealership sales representative for additional details and to verify the accuracy of the information on this website.
The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.