The Chevrolet Tahoe Hybrid is available in 2WD or 4WD models. GM's advanced 2-mode hybrid system conserves energy by using an electrically variable transmission, a 300-volt storage system and a 332-hp 6.0L Vortec V8 engine with Active Fuel Management. The Tahoe Hybrid is able to accelerate using only the electric motor. The nickel-metal hydride (NiMH) battery includes an 8 year/100,000 mile warranty. Efficiency is also aided by a liftgate and hood made of aluminum, improved aerodynamics, low-rolling resistance tires, and a 0.4-inch lower ride height. The Tahoe Hybrid seats up to eight passengers and can tow up to 6200 pounds on the 2WD model and up to 5900 pounds on the 4WD model. Safety features standard on all models include dual-stage front airbags, side curtain airbags, four-wheel anti-lock brakes, Stabilitrak stability control system with rollover mitigation, tire pressure monitoring system, and OnStar.For 2011, the Chevrolet Tahoe Hybrid is carried over with some new exterior paint color choices being available.