2026 GMC Sierra 2500 HD Trim Level Comparison

The 2026 GMC Sierra 2500 HD is a well-rounded full-size truck. Across its family of seven trims, you’ll find outstanding towing and hauling capability, including class-leading HD cargo bed volume. All of this brawn is balanced against a comfortable cabin and numerous advanced technologies — all qualities that Joyce Buick GMC patrons look for in a pickup.

Powertrain Details

Six of this pickup’s seven trims come standard with a 6.6-liter gasoline V8 engine rated at 401 horsepower and 464 lb-ft of torque. The range-topping Denali Ultimate trim equips a Duramax® 6.6-liter Turbo-Diesel V8 that outputs 470 horsepower and 975 lb-ft of torque. Both engines pair with an Allison® 10-speed automatic transmission. 

Pro

The Pro trim comes ready to work, with standard trailering mirrors and a trailer brake controller. In the cabin of this new GMC truck, you’ll find wireless smartphone compatibility and a 40/20/40-split front bench seat.

SLE

Key upgrades here include a 13.4-inch touchscreen and a 12.3-inch digital driver information center. Plus, the Traction Select System makes it easy to navigate rugged terrain.

SLT

The SLT trim adds to the features menu of the SLE trim with amenities such as a heated steering wheel and 10-way power heated front seats. The SLT trim also gets the upgraded ProGrade® Trailering System with an dedicated in-vehicle Trailering App®.

AT4

This trim takes off-road capability to another level. Standard features include twin-tube Rancho® shocks, skid plates, and exclusive 20-inch wheels with available BFGoodrich® off-road tires.

AT4X

The AT4X trim is the most rugged trim at our Avon, OH GMC dealership. Its extensive upgrades include a 1.5-inch suspension lift, Multimatic® DSSV dampers, and a rear electronic-locking differential.

Denali

“Luxe” is the byword for the Denali trim. It starts with many of the amenities of the SLT trim, and adds ultra-premium interior features such as Forge perforated leather seating surfaces, patterned aluminum trim, and exclusive authentic wood.

Denali Ultimate

The enhancements for this trim are myriad. A partial list includes a signature Vader Chrome grille, an exclusive Alpine Umber interior with full-grain leather seating, and a 12-speaker Bose® Premium Series sound system.

Buy Your 2026 GMC Sierra 2500 HD Near Cleveland, OH

Now that you’re familiar with all seven trims, it’s time to visit Joyce Buick GMC so you can test drive the ones that suit you best. With our competitive finance and GMC lease programs, you’re sure to get a great price on your favorite.