Powertrains and Towing
The three-row Chevrolet Suburban is offered in a half-dozen trim packages: LS, LT, Z71, RST, Premier, and High Country. The standard engine is a 5.3-liter V8 that makes 355 hp and 383 lb.-ft. of torque. A 6.2-liter V8 (420 hp and 460 lb.-ft. of torque) is available, as is a 3.0-liter inline-six Duramax turbo-diesel (305 hp and 495 lb.-ft. of torque). All trims except the High Country get the 5.3-liter V8 by default. The 6.2-liter V8 is standard on the High Country and optional for the RST, Z71, and Premier. The Duramax is available for all but the LS). A 10-speed automatic transmission partners with all three powerplants. Rear-wheel drive (RWD) is standard, with four-wheel drive (4WD) optional.
The Suburban boasts class-best maximum available cargo, yielding 144.5 cubic feet of space when both the second and third rows are folded down. Depending on the engine and drivetrain, it can tow between 7,700 pounds and 8,200 pounds. Its towing capability has been enhanced as part of this 2025 refresh, with new features such as boat ramp assist, trailer navigation, a trailer tire monitoring, forward path indication (helps drivers navigate the trailer courtesy of guidelines on the surround-view monitor), and a mobile trailering app with load rating information. Buyers may get the Advanced Trailering Package (blind-zone steering assist, Hitch View, and a smart trailer integration indicator) or the Max Trailering Package (the contents of the Advanced Trailering Package plus an upgraded cooling system and an integrated brake controller).