From Chevrolet press: The 2011 Chevrolet Tahoe is a full-size SUV with surprising fuel economy, with the 2WD model estimated at 21 mpg on the highway. A fuel-saving Hydra-Matic 6L80 six-speed is standard on all models, enhancing real-world fuel economy on the highway via reduced engine speed. Chevrolet Tahoe is available in LS, LT, LTZ and Hybrid models, with 2WD and 4WD.
An assortment of 17-inch, 18-inch and 20-inch wheels are available: Seventeen-inch wheels and tires are standard, with 18-inch wheels included with the Z71 package and 20-inch factory-installed wheels available (standard on LTZ).
The Z71 Off Road appearance package includes the Z71 Off Road suspension with high-pressure, gas-charged monotube shocks, 18-inch on/off-road tires, automatic-locking rear differential, front recovery hooks, a durable skid plate and a high-capacity air cleaner. Large, color-keyed fender flares, an aggressive front fascia and satin chrome tubular assist steps, and bright chrome front grille insert provide a distinctive appearance.