From Chevrolet press: After marking 75 years on the market in 2010, the Chevrolet Suburban rolls into its 76th year. It is based on GM’s full-size SUV architecture; riding on a 130-inch (3,302 mm) wheelbase, the Suburban’s dimensions support generous passenger and cargo capability, while enabling its smooth ride. Behind the first-row seats, Suburban offers 137.4 cubic feet (3,890 liters) of cargo room, along with up to 8,100 pounds (3,674 kg) of towing capability (1500 2WD models), when properly equipped; Suburban 2500 can tow up to 9,600 pounds (4,354 kg).
The Suburban lineup features LS, LT and LTZ models, with 2WD and 4WD, as well as 1500 and heavy-duty 2500 series. (LTZ is available only on 1500 series.) A Hydra-Matic 6L80 six-speed is standard on 1500 models, optimizing fuel economy on the highway via reduced engine speed. Also, the lower-rpm engine speed on the highway enhances interior quietness.
Standard in Suburban 1500 2WD models is an iron-block Vortec 5.3L V-8 with 320 horsepower (239 kW)* and 335 lb.-ft. of torque (454 Nm)*, which offers Active Fuel Management fuel-saving technology. Active Fuel Management technology seamlessly switches between eight- and four-cylinder power to save fuel. An aluminum-block version of the 5.3L is standard in 4WD models. The engines can run on any combination of gasoline and/or E85 fuel. The Suburban 1500 engines are backed by the fuel-saving Hydra-Matic 6L80 six-speed automatic transmission.
Heavy-duty Suburban 2500 models offer a 6.0L V-8. It features an iron cylinder block and is rated at 352 horsepower (262 kW)* and 382 lb.-ft. of torque (518 Nm).* It is matched with a new, fuel-saving Hydra-Matic 6L90 six-speed automatic transmission.