2025 GMC Sierra 2500HD
2025 GMC Sierra 2500 HD in GONZALES, LA
MPG
City
Highway
2025 GMC Sierra 2500HD
Trim Levels - Pro to SLE
Pro: At the foundation, the Pro trim emphasizes durability and utility with its standard 6.6L V8 gas engine, 10-speed Allison transmission, integrated trailering equipment, and seamless smartphone connectivity through wireless Apple CarPlay® and Android Auto™.
SLE: Stepping into the SLE, drivers gain a larger 13.4-inch premium infotainment display, the versatile Traction Select system with Tow/Haul mode, and access to the innovative MultiPro™ tailgate, which can even be enhanced with a built-in Kicker® audio system.
Trim Levels - From SLT to AT4X
SLT: The SLT trim raises refinement with heated and ventilated 10-way power front seats and access to the ProGrade® Trailering System, which integrates up to 14 available camera views to make hauling simpler and safer.
AT4: For those who crave adventure, the AT4 channels an off-road spirit with a purpose-built suspension, exclusive styling touches, and advanced trailering technology that inspires confidence when leaving paved roads behind.
AT4X: The AT4X builds on that foundation with even more distinctive elements, including smoked-amber roof marker lamps, a power sunroof, retractable illuminated assist steps, and bold high-gloss black wheels wrapped in mud-terrain tires.
Trim Levels - From Denali & Denali Ultimate
Denali: The Denali trim refines the Sierra’s presence with Forge-perforated leather seating, authentic wood accents, and the immersive sound of a Bose® 12-speaker audio system, creating an atmosphere of premium comfort.
Denali Ultimate At the very top of the range, the Denali Ultimate stands as the pinnacle of GMC craftsmanship, showcasing Alpine Umber full-grain leather, a signature Vader Chrome grille, and 16-way power front seats with massage capability, transforming every journey into a commanding yet indulgent experience.
Performance
Both are paired with a 10-speed Allison automatic transmission and available in 2WD or 4WD. When properly equipped, the Sierra 2500 HD offers a maximum conventional towing capacity of up to 20,000 lbs. with the diesel, and up to 22,500 lbs. with a gooseneck or fifth-wheel setup. Payload reaches as high as 4,064 lbs., making it a true workhorse.
Interior
Higher trims elevate the cabin with full-grain leather, authentic wood accents, and 16-way power front seats with massage capability—bringing luxury to the heavy-duty segment.
Technology
For trailering, the ProGrade® system offers up to 14 available camera views, trailer profiles, an in-vehicle trailering app, and blind-zone alerts designed specifically for trailers.
Safety Features
Visit Ross Downing GMC of Gonzales
May not represent actual vehicle. (Options, colors, trim and body style may vary)
The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.