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| 2026 GMC Sierra 2500 HD AT4 | vs. | 2026 GMC Sierra 2500 HD Denali |
| 6.6L Duramax V8 gas | Standard Engine | 6.6L Duramax V8 gas |
| 21,190 pounds | Maximum Towing Capacity | 20,000 pounds |
| 3,524 pounds | Maximum Payload Capacity | 3,812 pounds |
| 10.1 inches (11.1 inches with AT4X) | Ground Clearance | 10.4 inches |
| 69.5–83.5 cubic feet | Cargo Space | 69.5–83.5 cubic feet |
Whether you need something to help you with job site visits around Fresno or something to help you haul your boat or camper, you’ll be thoroughly impressed with the GMC Sierra 2500 HD. While its base-level trims are certainly impressive, the upper-level AT4 and Denali trims offer even more features and amenities. Which trim is better suited for you: the GMC Sierra 2500 HD AT4 or the Denali? Gill GMC compares both trims to help you decide!
After comparing the GMC Sierra 2500 HD AT4 and the GMC Sierra 2500 HD Denali, visit our dealership to take either model for a test drive.
Both models come with the same standard and available engines, producing the same level of horsepower. The only noticeable differences between their performance capabilities are their towing and payload capacities. We’ve listed those differences below:
AT4:
AT4X:
Denali:
Denali Ultimate:
As you can see, the AT4 offers slightly higher towing capacity, while the Denali has slightly higher payload capacity. Either model offers more than enough power to help you get the job done around Merced or anywhere.
Schedule a test drive of the GMC Sierra 2500 HD AT4 or the GMC Sierra 2500 HD Denali at our dealership!
The dimensions of these truck models are nearly identical, and the only significant difference is that the AT4 has different ground clearance measurements than the Denali.
Take a closer look at their dimensions:
AT4:
AT4X:
Denali:
Denali Ultimate:
Compare the GMC Sierra 2500 HD AT4 and the GMC Sierra 2500 HD Denali in more detail at our dealership. We’re conveniently located in Madera, and we’ll pair you with a GMC Sierra 2500 HD that has all the features you need!
Which truck will you choose to drive around Clovis? We can’t make the decision for you, but we can certainly guide you toward the right option. See which one of our GMC Sierra 2500 HD AT4 or Denali models stands out to you. When you find your preferred truck model, be sure to ask us about our new vehicle specials.
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