2026 GMC Sierra HD
2026 Sierra HD | Heavy-duty Pickup Truck
Industrial Strength Meets Professional Grade Luxury
The 2026 GMC Sierra HD, comprising the 2500 HD and 3500 HD, is engineered for those who refuse to settle for anything less than absolute capability. This isn't just a truck built for towing; it is a precision-tuned machine designed to master the most demanding job sites while providing an interior environment that rivals executive lounges. For 2026, the Sierra HD continues to set the standard in the heavy-duty segment with its legendary 10-speed transmission, massive towing capacities, and the kind of sophisticated presence that only a GMC can command.
Unmistakable Stance. Proven Durability.
The 2026 Sierra HD makes its intentions clear with an aggressive front-end design, featuring available animated LED headlamps and a bold, chrome-heavy grille on Denali models. Built on a high-strength steel frame, these trucks offer the structural integrity needed for maximum-duty trailering. Functional features like the standard CornerStep rear bumper, integrated BedSteps, and the worldās first six-function MultiProā¢ Tailgate ensure that the Sierra HD is as practical as it is imposing.
Forged for Professionals: Strength, Grit, and Hard Work in the Sierra HD
Performance: Master the Heaviest Loads
Performance in the 2026 Sierra HD begins with two legendary powertrains. The standard 6.6L Gas V8 engine delivers 401 horsepower and 464 lb-ft of torque. For the ultimate in industrial-grade muscle, the available DuramaxĀ® 6.6L Turbo-Diesel V8 paired with the 10-speed transmission produces 470 horsepower and a staggering 975 lb-ft of torque. This combination allows the 3500 HD Dually to achieve a max towing capacity of up to 36,000 lbs, ensuring that no trailer is too large for your next project.
Technology: Command Your Towing with Confidence
GMC has integrated advanced trailering technology directly into the Sierra HD's DNA. The available ProGradeā¢ Trailering System offers up to 14 camera views, including the industry-first Transparent Trailer View, allowing you to "see through" your camper or equipment. Inside, the massive 13.4-inch diagonal center touchscreen and available 15-inch Head-Up Display keep all critical trailering data and navigation within your line of sight.
Safety: Professional Grade Protection
GMC Pro Safety is standard across the lineup, providing essential driver-assistance technologies. For those towing heavy, the Sierra HD offers specialized safety enhancements like Adaptive Cruise Control with Trailering and Trailer Side Blind Zone Alert, which extends your monitoring range to include the length of your trailer. Standard features include:
- Forward Collision Alert: Monitors traffic to warn of potential impacts.
- Lane Departure Warning: Keeps you alert during long highway hauls.
- Following Distance Indicator: Helps maintain a safe gap even with heavy loads.
Sierra 1500 vs. Sierra HD: Light-Duty vs. Heavy-Duty
While both trucks carry the GMC name and "Professional Grade" philosophy, the Sierra HD is built on a distinct, heavy-duty chassis meant for commercial-grade tasks that exceed the limits of a standard half-ton pickup.
| Feature | 2026 GMC Sierra 1500 | 2026 GMC Sierra HD (2500/3500) |
|---|---|---|
| Max Towing | Up to 13,300 lbs | Up to 36,000 lbs |
| Max Payload | Up to 2,240 lbs | Up to 7,234 lbs |
| Transmission | 10-Speed Automatic | Ā® 10-Speed Automatic |
| Rear Wheels | Single Rear Wheel (SRW) | Single or Dual Rear Wheel (DRW) |
| Best For... | Daily driving & Recreational towing. | Heavy machinery & 5th-wheel trailers. |
Interior & Industrial Comfort
GMC proves that a heavy-duty truck doesn't have to feel industrial on the inside. The 2026 Sierra HD cabin is a sanctuary of quiet and comfort, featuring intuitive controls and premium textures.
- Denali Ultimate Luxury: The flagship trim features an Alpine Umber interior with full-grain leather seating and authentic open-pore Paldao wood.
- Vast Interior Space: Best-in-class Crew Cab front head- and legroom ensure that even the longest drives to the job site are comfortable.
- Quiet Transformation: Acoustic-laminated glass and specialized sound insulation keep engine noise out, even when the Duramax Diesel is under heavy load.
Trim Levels: Features & Pricing
Whether you need a dedicated work truck or the most luxurious heavy-duty machine on the market, the Sierra HD offers a configuration for your lifestyle.
| Trim Level | Starting MSRP* | Best For... | Key Features |
|---|---|---|---|
| Pro | $48,500 | Maximum Utility | 6.6L Gas V8, 10-Speed, GMC Pro Safety. |
| SLE / SLT | $52,300 | Versatile Capability | MultiProā¢ Tailgate, 13.4" Screen, 12.3" Cluster. |
| AT4 | $72,500 | Off-Road Command | Off-Road Suspension, Rancho Shocks, Skid Plates. |
| Denali | $76,800 | Premium Workhorse | Chrome Accents, Forge-Perforated Leather, 20" Wheels. |
| Denali Ultimate | $95,500 | Absolute Luxury | Full-Grain Leather, 12-Speaker Bose, Super Cruise. |
Technical Specifications
| Specification | 6.6L Gas V8 | 6.6L DuramaxĀ® Diesel |
|---|---|---|
| Horsepower | 401 hp @ 5200 rpm | 470 hp @ 2800 rpm |
| Torque | 464 lb-ft @ 4000 rpm | 975 lb-ft @ 1600 rpm |
| Max 3500 Towing | 19,080 lbs | 36,000 lbs |
| Max Payload | Up to 4,039 lbs | Up to 7,234 lbs |
Confidence & Coverage
Ownership is supported by GMCās Professional Grade warranty and service programs, ensuring your heavy-duty truck stays on the job.
- 3-year/36,000-mile Bumper-to-Bumper Limited Warranty.
- 5-year/60,000-mile Powertrain Limited Warranty (100k for Diesel).
- First Service Visit: Complimentary first maintenance visit for oil change, tire rotation, and multi-point inspection.
Why Buy Your 2026 Sierra HD from AutoNation?
At AutoNation, we understand that a truck as capable as the GMC Sierra HD is a vital tool for your business and your family's biggest adventures. As America's leading automotive retailer, we provide a purchasing experience that is as reliable and transparent as the Professional Grade trucks we sell.
- Unrivaled National Selection: With access to a network of over 100,000 vehicles, we can help you find the exact Sierra 2500 or 3500 HD configurationāincluding specialized dually and diesel modelsāthat you need.
- AutoNation Express: Experience a modern car-buying journey. Our digital tools allow you to value your trade-in, personalize your payments, and get pre-approved for financing online, so you can spend your time visiting our team for a test drive, not sitting at a desk.
- Upfront Transparent Pricing: We believe in clear, "No-Haggle" pricing. The AutoNation Price includes all current GMC incentives and rebates, ensuring you get a competitive price with absolute confidence.
- Expert HD Service: Our factory-trained TechXperts specialize in high-torque diesel engines and heavy-duty chassis maintenance. We use only genuine parts and guarantee our work for 12 months or 12,000 miles.
- DRV PNK: Your purchase supports a higher purpose. Through our DRV PNK initiative, AutoNation has raised more than $40 million for cancer research and treatment, giving back to the community with every vehicle we sell.
Accessories and color may vary. Quoted price subject to change without notice to correct errors or omissions. New vehicle pricing may already include applicable manufacturer incentives which may expire at any time. Manufacturer incentive data and vehicle features is provided by third parties and believed to be accurate as of the time of publication. Please contact the store by email or phone for details and availability of incentives. Dealer delivery and handling fee of $799 included in quoted price. Sales tax or other taxes, tag, registration fees, and government fees are not included in quoted price. Certain data and other content displayed herein is copyrighted by AutoNation, Inc. and / or third parties. (In addition, providers of data and other materials to AutoNation, Inc. or such third parties may have a copyright interest in and to such data to the extent that such data and other materials are subject to copyright protection under applicable United States laws.) Such data may not be reproduced or distributed in whole or in part by any printed, electronic or other means without explicit written permission from AutoNation, Inc. All information is gathered from sources that are believed to be reliable, but no assurance can be given that this information is complete and neither AutoNation, Inc. nor its suppliers assume any responsibility for errors or omissions or warrant the accuracy of this information. Displayed MPG is based on applicable EPA mileage ratings. Use for comparison purposes only. Your actual mileage will vary, depending on how you drive and maintain your vehicle, driving conditions, battery pack age/condition (hybrid models only) and other factors.
The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
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