2026 GMC Sierra HD Trim Levels

Are you in need of a truck that can keep up with your heavy-duty demands? If so, you should think about upgrading to a brand-new GMC Sierra HD (heavy-duty) truck! The HD is available in several trims, and it can tow up to 36,000 pounds. Check out the available 2026 trims and performance highlights below before visiting our dealership to find your very own GMC Sierra HD.

What Is The 2026 GMC Sierra 2500 HD & 3500 HD Lineup?

The Heavy-Duty lineup consists of the GMC Sierra 2500 HD and the GMC Sierra 3500 HD, providing hard-working configurations that are ready to tackle tough jobs. Both models have the same trim lineup, so Early drivers will be able to drive their favorite trim regardless of which model they choose.

Which 2026 GMC Sierra 2500 HD Trims Can You Choose From?

You can choose from seven distinct 2026 GMC Sierra 2500 HD trim configurations, giving you options that range from heavy-duty workhorse capability to top-tier luxury:

• Pro
• SLE
• SLT
• AT4
• Denali
• AT4X
• Denali Ultimate

Which 2026 GMC Sierra 3500 HD Trims Are Available?

The available 2026 GMC Sierra 3500 HD trims include the same robust lineup as the 2500 HD, allowing you to select your ideal package in the 3500 HD class:

• Pro
• SLE
• SLT
• AT4
• Denali
• AT4X
• Denali Ultimate

What Are The 2026 GMC Sierra HD Performance Highlights?

The 2026 GMC Sierra HD performance highlights center around sharing the same powerful engine options across both the 2500 HD and 3500 HD, maintaining nearly identical performance levels with differences only in towing and payload capacities.

Here are the performance highlights of both models:

What Are The Performance Capabilities Of The 2026 GMC Sierra 2500 HD?

The performance capabilities of the 2026 GMC Sierra 2500 HD are driven by standard gasoline and available diesel V8 engines that deliver massive towing and payload capabilities:

• Standard 6.6L V8 gas engine, capable of 401 hp and 464 lb-ft of torque
• Available 6.6L Duramax turbo-diesel V8 engine, capable of 470 hp and 975 lb-ft of torque
• Allison® 10-speed automatic transmission
• Maximum towing capacity of 22,390 pounds
• Maximum payload capacity of 4,049 pounds

What Are The Performance Capabilities Of The 2026 GMC Sierra 3500 HD?

The performance capabilities of the 2026 GMC Sierra 3500 HD maximize your utility on heavy-duty worksites by boosting maximum trailering limits up to 36,000 pounds:

• 6.6L Duramax turbo-diesel V8 engine
• Up to 470 hp
• 975 lb-ft of torque
• Allison® 10-speed automatic transmission
• Maximum towing capacity of 36,000 pounds
• Maximum payload capacity of 7,290 pounds

If you want to be able to tow and haul the largest amount of weight possible in Stephenville, then you’ll want to choose the 3500 HD. That being said, the 2500 HD offers plenty of power under the hood. Whichever model and trim you’re thinking about, you can schedule a test drive right here at our dealership.

How Can You Choose Your GMC Sierra HD In Comanche?

You can choose your GMC Sierra HD in Comanche by visiting our showroom or connecting with our team to schedule an in-person test drive today. We’re conveniently located near Eastland. In the meantime, be sure to apply for financing online and get a trade-in estimate for your current vehicle. Don’t forget to check out our new vehicle specials as well.

Frequently Asked Questions

What is the maximum towing capacity of the 2026 GMC Sierra 3500 HD?

The 2026 GMC Sierra 3500 HD delivers a maximum towing capacity of up to 36,000 pounds when properly equipped.

What are the engine specs of the available 6.6L Duramax turbo-diesel V8?

The available 6.6L Duramax turbo-diesel V8 engine produces up to 470 horsepower and 975 lb-ft of torque.

How many trim levels are offered in the 2026 GMC Sierra HD lineup?

Both the GMC Sierra 2500 HD and 3500 HD models offer the same seven trims: Pro, SLE, SLT, AT4, Denali, AT4X, and Denali Ultimate.