2026 GMC Sierra 2500 HD Engine Options and Specs
When you need a truck in Kansas City that works as hard as you do, the 2026 GMC Sierra 2500 HD is ready. If you are hauling heavy equipment to a job site, towing your fifth-wheel, or just need a reliable truck for the daily duties, the 2026 GMC Sierra 2500 HD delivers confident performance.
For the 2026 model year, GMC gives you two powerful engine options in gas and diesel options. Let’s break down the specs.
6.6L V8 Gas Engine
For drivers who want traditional gas power without sacrificing capability, the standard 6.6L V8 is a powerful option. The gas 6.6L V8 is an excellent choice for daily driving and standard towing duties.
- Horsepower: 401 hp
- Torque: 464 lb-ft
- Rear Axle Ratio: 3.73
- Transmission: Paired with an Allison® 10-speed automatic transmission
- Fuel System: Capless fuel fill for easier fill-ups
Duramax 6.6L Turbo-Diesel V8
If your day involves heavy towing or hauling heavy payloads, the available Duramax Diesel is a great available option. This engine offers massive torque for effortless pulling power.
- Availability: Standard on Denali Ultimate; Available on Pro, SLE, SLT, AT4, AT4X, and Denali.
- Horsepower: 470 hp
- Torque: 975 lb-ft
- Rear Axle Ratio: 3.42
- Cooling: Engine after-run feature for cooling performance and engine block heater
- Braking: Exhaust brake included
- Fuel System: Capped fuel fill with Diesel Exhaust Fluid (DEF) fill located in the fuel door
- Transmission: Paired with an Allison® 10-speed automatic transmission
- Note: May require additional optional equipment.
Allison® 10-Speed Automatic Transmission
Both engine options in the 2026 Sierra 2500 HD are paired with the world-class Allison® 10-speed automatic transmission, allowing you to maintain control and improve efficiency when towing.
- Tow/Haul Mode: Reduces shift cycling for better control and improved cooling when towing or hauling heavy loads.
- Auto Grade Braking: Automatically downshifts when needed to enable engine braking, helping to slow the vehicle on downhill grades and reduce brake wear.
- Electronically Controlled: Features overdrive for smooth highway cruising.
Towing Capacity That Matters
Kansas City truck owners know that torque numbers are great, but real-world towing capability is what counts. The 2026 Sierra 2500 HD is built to handle heavy towing.
The GMC Sierra 2500 HD Crew Cab offers available max towing of up to 21,870 lbs.*
Find Your 2026 Sierra 2500 in Kansas City Today
Ready to find your new GMC Sierra 2500 HD? At Cable Dahmer Buick GMC of Kansas City, we carry a great selection of new GMC Sierra 2500 models for sale.
Contact us and visit our showroom today to test drive the new heavy-duty GMC Sierra lineup.
*Requires a Crew Cab long bed 2WD model with available Duramax 6.6L Turbo-Diesel V8 engine, Max Trailering package, Gooseneck/Fifth-Wheel Prep Package, 18″ or 20″ wheels and tires and gooseneck/fifth-wheel hitch. Maximum trailering ratings are intended for comparison purposes only. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The trailering capacity of your specific vehicle may vary. The weight of passengers, cargo and options or accessories may reduce the amount you can trailer.
The 2026 GMC Terrain AT4 stands as a premier choice for drivers who seek a compact SUV blending off-road capability, sophisticated technology, and practical design. Ideal for traversing Kansas City’s urban landscape and exploring Missouri’s scenic routes, the Terrain AT4 offers reliability and confidence for daily commutes and adventurous getaways.
Interior Size, Versatility, and Comfort
The GMC Terrain AT4 comfortably seats five, with a cabin crafted for both passenger comfort and maximum utility.
- Front headroom: ~40.5 inches; Front legroom: ~44 inches provide generous space for tall drivers and front passengers.
- Cargo capacity: 63.5 cubic feet behind the first row and 29.8 cubic feet behind the second row, easily accommodating gear for family trips or outdoor pursuits.
- Versatile 60/40 split-folding rear seats, an underfloor storage compartment, and center console pass-through storage allow flexible arrangements for larger or longer items.
- Available panoramic sunroof with power sunshade lets in ample natural light, elevating driving comfort.
- Features like dual-zone automatic climate control and heated front seats contribute to a premium feel, while AT4-specific seating design and multiple storage bins enhance everyday usefulness.
Advanced Technology and Connectivity
Dominating the dash is the 15-inch Premium GMC Infotainment System touchscreen, paired with an 11-inch Driver Information Center for comprehensive vehicle insights.
- Customizable digital instrument clusters and intuitive menu layouts make technology easy and enjoyable to use.
- Animated headlamps and taillamps provide striking visual appeal.
- Google Built-In offers Google Assistant and Google Maps, enabling hands-free operation of navigation and texts.
- Wireless Apple CarPlay and Android Auto, wireless phone charging pad, USB-C ports, and available Wi-Fi hotspot guarantee smartphone convenience on the go.

Camera and Driver Assist Features
Safety and convenience are prioritized with:
- HD Rear Vision Camera for clear backing views
- Available HD Surround Vision with up to 8 camera perspectives
- Bird’s-eye view parking aids and enhanced off-road navigation visibility
Professional-Grade Performance for Kansas City and Beyond
Under the hood, the 1.5L Turbo 4-cylinder engine delivers 175 horsepower and 203 lb-ft of torque, paired with an 8-speed automatic transmission and standard all-wheel drive for assured traction in all weather.
- Fuel economy is rated at 24 MPG city / 28 MPG highway, making it efficient for metro commuting and highway cruising.
- Trailering Package boosts towing capacity up to 1,500 lbs, ideal for recreational equipment or small trailers.
Off-Road Capabilities
The AT4 trim is uniquely equipped for rugged terrain:
- Selectable drive modes: Normal, AWD, Snow, Off-Road, Tow/Haul, and AT4-exclusive Terrain mode with one-pedal crawling functionality.
- Off-road-tuned suspension, lifted ride height (measured ~8.5 inches ground clearance), and durable all-terrain tires help tackle mud, gravel, and rocky paths.
- Red recovery hooks, front steel skid plate, dark AT4 grille styling, roof rails, and LED fog lamps complete the look and utility.
Hill Descent Control ensures controlled speeds on steep grades. While the Terrain AT4 is capable of handling moderate trails and snow, automotive reviews note that for extreme off-road adventures (like deep mud or rocky climbs), buyers might also consider competitors like Ford Bronco Sport Badlands or Jeep Compass Trailhawk for their more advanced drive systems and ground clearance.
Why Buy from Cable Dahmer Buick GMC of Kansas City?
Shopping at Cable Dahmer means benefiting from the Cable Dahmer 5-Year Unlimited Mile Powertrain Warranty, offering exceptional coverage and peace of mind. This warranty covers critical powertrain components (engine, transmission, drive systems) for five years with no mileage limit.
- Additional perks include competitive offers, flexible financing, and a modern service center staffed by factory-trained technicians.
- Proudly serving Kansas City, Overland Park, Olathe, and neighboring communities, Cable Dahmer offers an extensive inventory with premium customer support.
Explore and Shop New Terrain AT4 Inventory
Ready to experience the Terrain AT4 for yourself? Browse our GMC Terrain inventory online and contact us at Cable Dahmer Buick GMC of Kansas City to schedule a test drive.

The ‘Big, Beautiful Bill’ offers a new tax deduction for car buyers who finance their vehicle purchase. We’ll explain how the auto loan interest deduction works, who is eligible, why you should act now on electric vehicles, and how Cable Dahmer Buick GMC of Kansas City can help you save.
Understanding the Auto Loan Deduction for Cable Dahmer Buick GMC of Kansas City Shoppers
Under this new legislation, qualifying taxpayers may deduct up to $10,000 in auto loan interest each year. This deduction is “above-the-line,” which means you can claim it whether you take the standard deduction or itemize. By lowering your adjusted gross income, this benefit can reduce your tax bill and free up cash for other needs.
Auto loan interest has long been treated as a personal expense with no tax break. Now, financing a new vehicle may come with a sizable tax benefit. For example, if you finance a $40,000 Buick SUV at 5 percent interest over five years, you might pay more than $5,000 in total interest. With the ‘Big, Beautiful Bill’, you could deduct your interest paid. Even if your interest charges do not reach $10,000 in one year, you still claim the amount you paid.
Who Qualifies
To take advantage of this deduction, the vehicle and purchaser must meet all of the following criteria:
- Vehicle final assembly is in the U.S.
- Vehicle must be new
- Vehicle is financed through a standard and secured loan
- Vehicle must be for personal-use; commercial vehicles and leases do not qualify.
- Modified adjusted gross income must be below: $100,000 for single filers and $200,000 for joint filers. For every $1,000 of income over these limits, your deduction reduces by $200.
- Must purchase between the beginning of 2025 and the end of 2028.
If you meet these conditions, you can claim this deduction on your tax return.
How to Claim the Interest Deduction
- Gather your documents: Keep Form 1098 and annual loan statements showing the interest you paid.
- Fill out Schedule 1: Enter the deductible interest on the line for other adjustments.
- File your return: Use tax software or a preparer that supports above-the-line deductions. You do not need to itemize to claim this benefit.
With clear records and the right forms, claiming the deduction is straightforward. Our finance team at Cable Dahmer Buick GMC can even estimate your annual interest deduction so you know what to expect before you buy.
Electric Vehicle Incentives Are Ending Soon
If you are considering an electric vehicle, the $7,500 federal tax credit for new electric vehicles expires on September 30, 2025. After that date, no further federal rebate will be available. In addition, some state level rebates and incentives may phase out at different times, so check your local rules.
Models like the GMC Sierra EV and other plug-in vehicles are still currently eligible. Buying before the deadline locks in the full $7,500 credit for qualifying customers. If you lease, remember leases do not qualify for the auto loan interest deduction, but may still receive a portion of the EV credit as of now. Contact us if you have questions about specific vehicle eligibility.
Why Cable Dahmer Buick GMC is Your Dealership
Buying from Cable Dahmer Buick GMC lets you combine the ‘Big, Beautiful Bill’ interest deduction with our dealership advantages:
- Wide selection of new and used cars from Buick, GMC, and more
- Competitive pricing and an easy sales process
- 5-Year Unlimited Mile Powertrain Warranty on new vehicles
- 5-Year 100,000-Mile Powertrain Warranty on select used cars
- Flexible financing options
- Certified Buick and GMC Service and Parts departments
- Free Pick-Up and Delivery with Cable Dahmer Connect for Service Appointments
When you visit Cable Dahmer Buick GMC of Kansas City, our finance team can estimate your annual interest deduction and walk you through the details. We will help you structure a loan that fits your budget for your next vehicle purchase.
Next Steps
To take full advantage of these savings, follow these steps:
- If you plan to buy an EV, purchase before September 30, 2025, to secure the $7,500 credit.
- Finance your new vehicle at Cable Dahmer Buick GMC to qualify for up to $10,000 in deductible interest.
- Consult your tax preparer or use software that supports above-the-line deductions.
- Explore our latest Buick and GMC offers online or in person to find the right model for your needs and budget.
- Contact us to discuss further details regarding eligible vehicles and financing options.
Save With Cable Dahmer Buick GMC of Kansas City
At Cable Dahmer Buick GMC, we make car buying easy. From estimating tax savings to securing competitive financing, our team guides you every step of the way. Visit us in Kansas City or call (816) 663-9962 to schedule your test drive today. Let Cable Dahmer Buick GMC help you save under the Big Beautiful Bill and drive home a great deal.
We Are Your CARFAX Top-Rated Dealer in Kansas City
At Cable Dahmer Buick GMC of Kansas City, we take pride in the services we provide to our customers. Whether it be helping someone find a new Buick SUV or getting a Missouri State Inspection in KCMO, we have all of your automotive needs covered. And now we are proud to say we are officially a CARFAX 5X Top-Rated Dealer. This prestigious award is a reflection of our commitment to the Kansas City area and our desire to provide you with an exceptional dealership experience.
What Is a CARFAX Top-Rated Dealer?
A CARFAX Top-Rated Dealer is a car dealership that meets the high standards of the brand. The average rating of these dealerships is 4.6 out of 5 stars. As a Cable Dahmer dealership, we are recognized for our commitment to transparency and providing a meaningful experience. If you are shopping for a new Buick for sale near you, shopping with us ensures you get the right vehicle for the job.
For decades, area drivers have relied on our dealership for our GM service center and vast selection of inventory. We know that you have options during the car buying process, but no one else offers the Cable Dahmer Difference that we do. You can shop with us online or visit us in Kansas City to get the CARFAX Top-Rated Dealer experience.
2025 GMC Sierra 1500 Safety Technology

December 24, 2024Looking for a truck for sale in Kansas City? With the 2025 GMC Sierra 1500, you can get a pickup that offers the latest safety features. At Cable Dahmer Buick GMC of Kansas City, we want to help inform you what all this vehicle brings to the table. That is why we have put together a rundown of all of the Sierra 1500 safety features and tech.
3 Holiday Events for Kansas City

It might be hard to believe it, but the winter holidays are here! And that means it’s time to take the family or a loved one to enjoy the many events that Kansas City has to offer. From Union Station to metro area parks, there’s a lot to do this time of year. And at Cable Dahmer Buick GMC of Kansas City, we have picked our top three.
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The 2024 GMC Sierra 1500 and Sierra 2500 are two impressive trucks that cater to different needs and preferences. While they share some similarities in design and technology, there are significant differences in their capabilities and intended uses. If you are shopping for a new truck for sale in Kansas City, it is likely one of these GMC pickups could be right for you. So let’s compare the GMC Sierra 1500 to the GMC Sierra 2500.
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