In an age where even heavy-duty trucks are expected to go from the jobsite to the country club, GMC’s refresh of the Sierra 2500HD was timely.

Engine, Drivetrain, and Configuration Choices to Match Individual Priorities
If good daily drivability is high on the list, you’ll appreciate the new 10-speed Allison automatic transmission for the 6.6-liter gasoline V-8 engine option. Its output is rated at 401 hp and 464 lb-ft of torque. But where tough tasks and/or quicker acceleration are the priority, you’ll opt for the increased horsepower and torque from the Duramax 6.6-liter turbodiesel V-8. Also paired to a 10-speed Allison automatic transmission, it’s good for 470 hp. And the turbodiesel more than doubles the amount of torque compared to the gas engine, with a whopping 975 lb-ft.
Sierra 2500 offers the choice of a double or crew cab configuration with a standard bed measuring 82.3 inches long. Or, the long bed measuring 98.3 inches can be specified with a regular cab, double cab or crew cab. Both beds are 71.4 inches wide with a bounty of tie-down points. GMC’s available MultiPro tailgate comes with handy features including a bed step, worktable, and cargo organizer.
Impressive payload capacity ranges from 3,653 pounds to 4,114 pounds depending on the configuration you choose. Towing capability starts at around 16,000 pounds and climbs up to 36,000 pounds with the Duramax engine and Max Trailering package with gooseneck/fifth-wheel.
GMC outfits the Sierra 2500 with standard RWD and available 4WD on most versions. 4WD is standard on the Denali Ultimate tri and the off-road capable AT4 or AT4X trims.
Upgraded Interiors with More Standard Tech

Interiors reflect the upscale design and premium appointments expected of the GMC brand. And, of course, GMC also ups the ante with more standard tech included in the latest generation model. The basic Pro trim receives a 3.5-inch instrument cluster screen with a 7.0-inch touchscreen. It connects to Bluetooth, Apple CarPlay, and Android Auto. SLE trims and higher come equipped with a 12.3-inch driver display and 13.4-inch touchscreen with Google built-in software in addition to Bluetooth, Apple CarPlay, and Android Auto.
Cruise control, front automatic emergency braking with pedestrian detection, automatic high-beams, and lane departure warning are standard. And 2025 models add a trailer brake controller across all models. Additionally, front and rear parking sensors, rear cross-traffic alert with automatic braking, trailer blind-spot monitoring, and adaptive cruise control are available among the option packages and included on top trims.
More Choices
Higher-end models have USB ports in both rows of seats and a wireless charger up front. A six-speaker audio system is equipped on lower trims, while seven- and 12-speaker setups from Bose are available on higher-end models. GMC offers a camera system providing a 360-degree view of the Sierra 2500HD’s surroundings.
Stepping up to the uber-luxe Denali Ultimate trim, our tester had most all of the aforementioned options included, along with a host of other Denali-level refinements. Outside, this added 20-inch wheels and special dark chrome finishing on the grille and badges. And inside, it was adorned with leather, wood, and suede-like materials. Heated and ventilated front seats offered 16-way adjustability and massage functionality. Other premium inclusions were a sunroof, head-up display, 12-speaker premium audio system, and wireless charging pad.
Across seven trim levels, two powertrains, and five styles of cab and box, price for the Sierra 2500 ranges from $46,000 to nearly six figures. Our top shelf tester with the Duramax turbodiesel engine was $92,800 to start. Adding the Max Trailering Package, premium Alpine Umber paint, and destination charges put it just under $97K.
Ultimately, the 2025 GMC Sierra 2500 can be as powerful, versatile and luxurious as its buyer needs for it to be, fully customizable in terms of performance, comfort, and technology.