2026 GMC Sierra HD vs. 2026 Ford Super Duty: Why McAlester’s Hardest-Working Trucks Wear a GMC Badge

If you pull a gooseneck around Pittsburg County — cattle, hay, equipment, a toy hauler — the choice usually comes down to the GMC Sierra HD and the Ford Super Duty. Both are heavy-duty trucks, but they’re built on different philosophies: Ford chases headline numbers with specialty configurations, while GMC loads the capability and trailering equipment into the trucks people actually buy. Here’s the 2026 comparison.

Engines and transmissions

Sierra HD does it with two proven engines, each paired with an Allison-branded 10-speed automatic — the transmission name heavy-duty buyers have trusted for decades:

• 6.6L V8 gas: 401 hp, 464 lb-ft
• 6.6L Duramax turbo-diesel: 470 hp, 975 lb-ft

Super Duty needs four engines to cover the same ground — a 6.8L gas V8 (405 hp), a 7.3L gas V8 (430 hp), and two versions of its 6.7L diesel (475 hp / 1,050 lb-ft, and a High Output at 500 hp / 1,200 lb-ft). Ford’s biggest torque number is real — but it lives only in the High Output diesel, in the heaviest configurations. The Duramax delivers its 975 lb-ft through the Allison in every Sierra HD diesel, from a 2500 work truck on up.

Maximum towing (properly equipped)

Read the Ford column carefully: those top figures require dual rear wheels, the High Output diesel, a 4.10 axle and specific packages stacked just right. In the configurations working people actually buy — like a 2500 crew cab 4×4 with a gooseneck — the Sierra HD is right there: 22,390 lbs of gooseneck capacity against the F-250’s 23,000, and 36,000 lbs from the Sierra 3500 HD. And capability you don’t have to special-order is capability you can use.

Trailering equipment: what GMC includes vs. what Ford charges for

This is where the trucks separate:

• Trailer brake controller: standard on the Sierra HD — even on the base Pro work truck. On the F-250 XL, Ford charges $300 extra for its integrated controller.
• Camera systems: the Sierra offers up to 14 camera views, including Transparent Trailer View, which makes a gooseneck or fifth-wheel trailer effectively see-through when you’re backing and maneuvering. Ford has no answer to it.
• Trailering app: GMC’s ProGrade Trailering System (SLT and up) stores trailer profiles, runs pre-departure checklists, and monitors trailer tire pressure and temperature from the cab.
• Bed access: every Sierra HD gets the six-function MultiPro tailgate with built-in step and work surface, plus CornerStep bumper steps. Ford’s tailgate step is a $375 option.

Ford will sell you some clever extras — onboard scales, a 2 kW power outlet — as paid add-ons. GMC’s approach is to put the trailering hardware that matters in the truck from the start.

Payload and pricing

The Sierra 3500 HD hauls up to 7,290 lbs of payload and the 2500 HD up to 3,759 lbs — serious numbers, achieved without the payload-package fine print behind Ford’s advertised maximums. On price, the Sierra 2500 HD starts around $49,295 including destination. Ford advertises a lower starting figure on the base F-250 XL — then starts adding: $300 for the brake controller, $375 for the tailgate step, and more for equipment the Sierra includes. Build both trucks the way you’d actually work them and the gap shrinks fast. The only honest comparison is out the door, comparably equipped.

The bottom line for McAlester buyers

The Sierra HD gives you the Allison transmission, the best trailering camera system in the class, and the key trailering equipment standard — in a truck that tows within a few percent of Ford’s best at every level. That’s why so much of Pittsburg County’s work runs on GMC.

Prove it to yourself: bring us a written quote on a Super Duty — from the Ford store across the street or anywhere else — and use our dealer program. We’ll put a comparably equipped Sierra HD next to it, out the door, in writing, including our published $589 documentation fee. Then hook up, test-drive both, and decide with real numbers.