GMC Sierra Heavy Duty
2026 GMC Sierra 2500HD for Sale
A three-quarter-ton heavy-duty truck built for serious towing, with two 6.6L V8 engines, seven trims from $47,000, and up to 22,390 lbs of gooseneck pulling power. Browse current inventory at Allen Tillery Buick GMC in Hot Springs.
See what is on the lot right now, then read on for engines, trims, pricing, and towing. Browse the full 2026 Sierra 2500HD inventory or keep scrolling to find the right configuration for your work.
The 2026 GMC Sierra 2500HD is GMC's three-quarter-ton heavy-duty pickup, sitting between the half-ton Sierra 1500 and the one-ton Sierra 3500HD. It runs from $47,000 for the work-ready Pro to $94,200 for the diesel-powered Denali Ultimate, with a standard 401-horsepower 6.6L gas V8 and an available 470-horsepower Duramax turbo-diesel under the hood. For contractors around Hot Springs, farmers near Malvern, and anyone towing a gooseneck or fifth-wheel to Lake Ouachita, it is built to work hard.
Allen Tillery Buick GMC has been a family-owned Hot Springs dealership since 1967, and we keep Sierra 2500HD trucks on the ground for Benton, Malvern, and El Dorado drivers. This page walks through the engines, the full trim lineup and pricing, towing and payload, the technology, and which configuration fits your job. When you are ready, check live inventory or start financing.
Engines & Powertrain
2026 Sierra 2500HD Engines and Powertrain
Every 2026 Sierra 2500HD pairs its engine with the heavy-duty Allison 10-speed automatic transmission, with Tow/Haul mode and Auto Grade Braking to manage loaded trailers on grades.
Standard 6.6L V8 Gas: 401 hp / 464 lb-ft
The standard 6.6L gas V8 produces 401 horsepower and 464 lb-ft of torque. It is standard on Pro through Denali and handles the large majority of heavy-duty hauling without the diesel's price premium. It is a strong everyday choice for daily-driven work trucks.
Available Duramax 6.6L Turbo-Diesel: 470 hp / 975 lb-ft
The available Duramax 6.6L Turbo-Diesel V8 makes 470 horsepower and 975 lb-ft of torque, the engine to choose for the heaviest gooseneck and fifth-wheel work. It can be ordered on every trim and comes standard on the Denali Ultimate. On steep grades and at slick spring boat ramps, the diesel's exhaust braking and the Allison's Tow/Haul mode keep a loaded gooseneck composed.
Trims & Pricing
2026 Sierra 2500HD Trim Lineup and Pricing
Seven trims span work truck to flagship luxury. Starting prices below are GMC MSRP and exclude destination freight, tax, title, license, and dealer fees; dealer sets final price.
| Trim | Starting MSRP | What it adds |
|---|---|---|
| Pro | $47,000 | Work-truck foundation: gas V8, Trailering Package, trailer brake controller, best-in-class HD bed volume, wireless Apple CarPlay and Android Auto. |
| SLE | $54,000 | 13.4-inch touchscreen, 12.3-inch driver display, Traction Select with Tow/Haul, available MultiPro Tailgate and camera views. |
| SLT | $65,200 | 10-way power heated front seats, heated steering wheel, ProGrade Trailering System with in-vehicle trailering app, 18-inch wheels. |
| AT4 | $72,200 | Off-Road Suspension Package with Rancho shocks and skid plates, 20-inch gloss-black wheels, HD Surround Vision, leather seating. The popular off-road pick. |
| Denali | $75,200 | Chrome Denali styling, premium leather and authentic wood, upgraded interior materials and tech. |
| AT4X | $85,200 | 35-inch Goodyear Territory MT tires, 1.5-inch factory lift, Multimatic DSSV dampers, rear locking differential; AT4X AEV Edition available. The trail-ready HD. |
| Denali Ultimate | $94,200 | Flagship luxury with the Duramax diesel standard, 16-way power front seats with massage, full-grain leather and Alpine Umber interior. |
Every trim from Pro through Denali can be ordered with the available Duramax diesel; the AT4X and Denali Ultimate make the diesel their headline powertrain. For a section-by-section breakdown of standard and available equipment, see the full trims and pricing guide.
Capability
2026 Sierra 2500HD Towing and Payload
The Sierra 2500HD tows up to 22,390 lbs of maximum available gooseneck or fifth-wheel weight when properly equipped: a Crew Cab long-bed 2WD model with the Duramax diesel, Max Trailering and Gooseneck/Fifth-Wheel Prep packages, and the right wheels and hitch. Conventional and per-trim ratings are lower; on a gooseneck or fifth-wheel hitch the AT4 is rated up to 21,300 lbs and the AT4X up to 18,500 lbs.
Payload varies by configuration. A 4WD Crew Cab AT4 is rated at 3,428 lbs, with lighter gas configurations carrying their own ratings. The full towing-and-payload-by-configuration breakdown, including conventional versus gooseneck numbers, is on the Sierra 2500HD towing capacity guide.
Technology & Comfort
Technology, Interior, and Safety
Higher trims center on a 13.4-inch diagonal touchscreen and a 12.3-inch driver display, with wireless Apple CarPlay and Android Auto. For towing, the Sierra 2500HD offers up to 14 available camera views, including a Transparent Trailer view that lets you see through a hitched trailer, plus the ProGrade Trailering System with an in-vehicle trailering app.
GMC's MultiPro Tailgate, with available MultiPro Audio System by Kicker, adds six functions for loading and access. Inside, available features climb to 16-way power front seats with massage on the Denali Ultimate. Driver-assistance features include Adaptive Cruise Control with trailering and HD Surround Vision on equipped trims.
Find Your Fit
Which 2026 Sierra 2500HD Is Right for You?
- Pulling a heavy gooseneck or fifth-wheel for work. Order an AT4 or Denali with the Duramax for up to 22,390 lbs of capability. Browse the 2500HD inventory.
- A daily work truck on a budget. The Pro or SLE with the gas V8 covers most jobs without the diesel premium. Browse the 2500HD inventory.
- Hard-working luxury for long hauls. The SLT and Denali pair leather comfort with full trailering tech. Browse the 2500HD inventory.
- Job sites plus weekend trails. The AT4 handles both, and the AT4X steps up to 35-inch tires and Multimatic dampers for serious terrain. Browse the 2500HD inventory.
A well-equipped SLT diesel Crew Cab lands in the mid-$70,000s before options. Estimate a monthly payment to see where your build fits.
Why Allen Tillery
Why Buy the 2026 Sierra 2500HD at Allen Tillery Buick GMC
Allen Tillery Buick GMC has sold and serviced GMC trucks in Hot Springs since 1967, and we treat every customer like family. We stock Sierra 2500HD work trucks and diesels for drivers across Benton, Malvern, El Dorado, and the wider Lake Ouachita area, with a GMC-certified service department to keep them working. Call us at (501) 881-4160, view current inventory, explore financing options, or start with the Sierra 2500HD research hub.
FAQs
2026 GMC Sierra 2500HD Frequently Asked Questions
How much can the 2026 GMC Sierra 2500HD tow?
Up to 22,390 lbs of maximum available gooseneck or fifth-wheel towing when properly equipped with the Duramax diesel on a Crew Cab long-bed 2WD model. Conventional and per-trim ratings are lower.
What engines does the 2026 Sierra 2500HD offer?
A standard 6.6L gas V8 with 401 horsepower and 464 lb-ft of torque, and an available Duramax 6.6L Turbo-Diesel V8 with 470 horsepower and 975 lb-ft of torque. Both use an Allison 10-speed automatic.
How much does the 2026 Sierra 2500HD cost?
Starting MSRP runs from $47,000 for the Pro to $94,200 for the Denali Ultimate, excluding destination, tax, title, license, and dealer fees. Dealer sets final price.
How many trims does the 2026 Sierra 2500HD have?
Seven: Pro, SLE, SLT, AT4, Denali, AT4X, and Denali Ultimate. They span work truck to flagship luxury, with off-road AT4 and AT4X grades in between.
Is the 2026 Sierra 2500HD redesigned?
The 2026 model is largely a carryover with new exterior colors; a next-generation Sierra HD is expected. Buyers cross-shopping the 2025 and 2026 trucks will find them mechanically similar.
Should I choose the gas V8 or the Duramax diesel?
The gas V8 handles most heavy-duty work and costs less. Choose the Duramax diesel for the heaviest gooseneck towing, long highway hauls, and the strongest grade control from its 975 lb-ft of torque.
What cab and bed configurations are available?
Regular Cab, Double Cab, and Crew Cab, with a 6-foot-9-inch standard bed or an 8-foot long bed depending on cab and trim.
Find your 2026 Sierra 2500HD at Allen Tillery
Browse what is in stock, get pre-qualified in minutes, or call (501) 881-4160 to talk through gas versus diesel and the right trim for your work.
Explore the Sierra 2500HD Research Hub
May not represent actual vehicle. (Options, colors, trim and body style may vary)
The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.