2025 Gmc 3500hd Duramax Specs. 2025 gmc sierra 2500hd at4x aev vehicle type: With a great diesel powertrain and huge capabilities, the gmc sierra 2500hd and 3500hd are workhorses, but they're nonetheless outclassed by ford and ram rivals.
The 2025 gmc sierra hd is the best in its class, with the power of an advanced diesel engine and the utility of the latest tailgate and trailering technologies. View information about specs and features.