Why the 2026 GMC Sierra 2500 HD AT4X Feels Right at Home around Colorado Springs

Feb 14, 2026

*Not actual model

Alpine GMC South – Why the 2026 GMC Sierra 2500 HD AT4X Feels Right at Home around Colorado Springs

When the workweek ends, and the mountain trails begin, the 2026 GMC Sierra 2500 HD AT4X stands ready to tackle both with equal poise. Built for crews who tow heavy, travel far, and still want a truck that’s comfortable after dark, the AT4X pairs a factory 1.5-inch suspension lift and Multimatic® DSSV dampers with premium cabin materials and advanced towing tech. The result is a heavy-duty pickup that keeps its cool under pressure and feels composed on washboard, snowpack, and steep grades.

From the first start-up, you notice how the AT4X is tuned for real-world demands. Standard 35-inch Goodyear® Territory MT tires add ground clearance and bite, while a rear electronic-locking differential helps put power down on loose surfaces and off-camber climbs. Underbody protection is substantial, with a larger steel transfer case skid plate and a front aluminum skid plate that protects critical components when trail ruts get deep. Inside, the Obsidian Rush interior features full-grain leather seating with technical-grain leather accents and authentic Vanta ash wood, complemented by 16-way heated and ventilated power front seats with massage to reduce fatigue on all-day hauls or late-night returns.

Trailering confidence is central to the AT4X experience. Up to 14 camera views can simplify everything from lining up a weight-distributing hitch to monitoring a gooseneck on tight switchbacks. Pair that with the available Duramax® 6.6L Turbo-Diesel V8, and you gain robust torque and diesel braking that helps keep long descents calm and controlled. Add the available AEV Edition for stamped steel bumpers and additional skid plate protection if you regularly face rocky trailheads or remote jobsites.

Suspension and control: Factory 1.5-inch lift, Multimatic® DSSV dampers, and rear electronic-locking differential support traction and composure
Trail hardware: 35-inch Goodyear® Territory MT tires, front aluminum skid plate, and larger steel transfer case skid plate
Cabin comfort: Obsidian Rush interior with full-grain leather and 16-way seats with massage for long-haul comfort
Trailering tech: Up to 14 camera views and diesel-grade braking confidence with the available Duramax® powertrain
Upgrade path: Available AT4X AEV Edition adds stamped steel bumpers and additional underbody protection

Planning your build is straightforward when you map features to your routes. If your week includes icy pre-dawn jobsite access and weekend trail runs above treeline, prioritize the Multimatic® DSSV dampers and tire package for composure. If you frequently back into tight driveways with a boat or enclosed trailer, set favorites for your preferred camera views and use the In-Vehicle Trailering App’s checklists and diagnostics to keep you organized and proactive.

Define the mission: List your trailer types, average loads, and typical terrain to guide axle and powertrain choices.
Prioritize visibility: Choose the camera views you will use most, such as Transparent Trailer View or hitch guidance.
Tailor comfort: Set seat, mirror, and display profiles to reduce fatigue on long towing days.
Protect essentials: Add bed protection, recovery points, and lighting for low-light loading and trail work.
Validate the setup: Test your route with your trailer profile active, fine-tune trailer gain, and save settings.

For many owners, the AT4X is the right balance of rugged and refined – a heavy-duty truck that can be both a field tool and a highway cruiser without compromise. When you are ready to see how the pieces fit your routine, schedule a demo drive and bring your questions about tires, towing profiles, and accessories. Alpine Buick GMC South will help you shape a confident build that supports your busiest seasons and your most rewarding weekends.

Frequently Asked Questions:

Does the AT4X ride too firmly on daily commutes?

The factory lift and Multimatic® DSSV dampers are tuned to control body motion without feeling harsh, delivering a planted ride on broken pavement and dirt while keeping heavy loads composed.

Can I add the Duramax® 6.6L Turbo-Diesel V8 to the AT4X?

Yes, the available Duramax® powertrain is a popular choice for confident towing and downhill control, especially for owners who frequently haul heavy cargo or travel through mountain passes.

Is the AT4X AEV Edition worthwhile for weekend trail use?

If your adventures include rocky ascents, ruts, or brush, the AEV Edition’s stamped steel bumpers and additional skid plates add durability and front-end protection that pay off on more technical trails.

We are serving Pueblo, Canon City, and Colorado Springs with guided walkarounds, camera view demos, and accessory recommendations tailored to your routes and gear. Bring your questions, your towing scenarios, and your weekend plans – our team will help you dial in the details so you can focus on the road ahead.