2024 Gmc 3500hd Duramax Specs. The 2025 gmc sierra hd work truck pulls your world with turbocharged power and an impressive lineup of trims. Among the 2500 hd and the 3500 hd models, the powertrain.

The new 2024 gmc sierra hd pickup truck pulls your world with turbocharged power and an impressive lineup of trims that includes the first ever denali ultimate. Sierra hd denali’s standard 6.6l.