Towing, Hauling and Acceleration

The maximum towing capacity on most GMC Sierra 2500HD models is 14,500 pounds but you can get up as high as 22,500 pounds on dually diesel models equipped with the Max Tailering package. The maximum payload ranges from 3,381 pounds up to 3850 pounds depending on the configuration. The GMC Sierra 2500 HD with the diesel engine can reach a zero-to-60-mph time in a surprising 6.5 seconds and it will hit the quarter-mile in 15.0 seconds.

Interior and Cargo Space

The 2025 GMC Sierra 2500 HD has a massive dashboard with an array of user-friendly switchgear. Most models include a split-folding front bench that can be replaced by a pair of bucket seats as well as a full center console. The interior can be upgraded with a head-up display, heated and ventilated front seats along with a wireless phone charging pad. The interior of the Denali Ultimate lives up to its name with leather-wrapped interior pieces, a soft micro-suede headliner and Paldao wood trim pieces.

The Sierra 2500HD also features a versatile cargo bed with an available MultiPro Tailgate, which offers six unique functions to make loading and unloading easier than ever. With its well-designed interior and practical features, the Sierra 2500HD is an ideal working partner on major league jobs.

Technology

The 2025 GMC Sierra 2500HD comes with a standard 8.0-inch touchscreen along with a set of rotary knobs and physical buttons that are simple to use. You can upgrade to a massive 13.4-inch infotainment touch screen with features like Google built-in, wireless smartphone connectivity and split-screen navigation. Other available technology includes satellite radio, a premium Bose audio system and even a rear seat entertainment system.

Trim Levels and Pricing

The 2025 GMC Sierra 2500HD is available for Flint and Swartz Creek buyers in a range of trim levels. The entry-level Pro model starts at $48,295 and offers essential features. The SLE starts at $52,395 while the SLT trim starts at $63,895 and includes the MultiPro Tailgate. The AT4 starts at $72,995 and the Denali begins at $75,895. The off-road-capable AT4X starts at $85,195 and the top-tier Denali Ultimate has a starting MSRP of $95,795.