Trims, Powertrains, and Configurations
The 2025 Silverado 1500 is available in nine trims: WT (Work Truck), Custom, Custom Trail Boss, LT, RST, LT Trail Boss, LTZ, ZR2, and High Country. Engine options include the TurboMax 2.7-liter turbocharged four-cylinder (310 horsepower and 410 lb.-ft. of torque), a 5.3-liter V8 (355 hp and 383 lb.-ft.), a 6.2-liter V8 (420 hp and 460 lb.-ft.), and a turbocharged 3.0-liter Duramax Diesel inline-six (305 hp and 495 lb.-ft.).
The model’s drivetrain configurations start with standard rear-wheel drive (RWD) for most trims, with four-wheel drive (4WD) included with the Custom Trail Boss, LT Trail Boss, and ZR2 trims and available on the other trims. The transmission options include an eight-speed automatic for the TurboMax engine and a ten-speed automatic for all other powerplants. Three cab configurations are offered: regular cab (two doors, WT trim only), double cab (full front doors with smaller rear doors), and crew cab (four full-sized doors). The available bed lengths include short (69.9 inches, crew cab only), standard (79.4 inches), and long (98.2 inches, regular cab only). Powertrain and cab configuration availability vary by trim.
The TurboMax four-cylinder delivers 17 to 19 mpg in the city and 18 to 22 mpg on the highway. The 5.3-liter V8 returns 15 to 17 mpg around town and 19 to 21 mpg on the open road. The 6.2-liter V8 offers 14 to 16 mpg in the city and 17 to 20 mpg on the highway. The Duramax Diesel achieves 21 to 24 mpg in the city and 23 to 29 mpg on the highway. Maximum towing capacity reaches 13,300 pounds with the proper equipment, while the payload capacity extends to 2,260 pounds. Fuel efficiency, towing, and payload capabilities vary depending on the engine, drivetrain, cab style, and equipment.