2025 Gmc Sierra 2025 Slt Specs. The 2025 sierra 1500 ranges in power from the at4 with 305 horsepower to the denali ultimate with 420 horsepower. It depends on your definition of underpowered.
The preferred package is $1,480 and includes an integrated trailer brake controller with. Information about the 2025 gmc sierra 1500, including introduction date, specifications, pictures and other details.