2025 Gmc Sierra 2500hd Slt. Choose either a gmc sierra 2500 hd or 3500 hd and learn more about the vehicle specs, trims, and features available. Pro, sle, slt, at4, at4x, denali, and denali ultimate.

The gmc sierra 2500hd is available in seven trims: Gmc utilizes eight different trim levels across the sierra and sierra hd platforms, and in this section, we’re covering the standout features of each and what separates them from the others.