The Tahoe Hybrid’s improved fuel economy over gasoline-only models is due largely to GM’s state-of-the-art two-mode hybrid system, which helps 2WD Tahoe Hybrid models, for example, deliver an estimated 20 mpg in the city. That’s comparable to the city fuel economy of much-smaller cars.
GM’s advanced Electrically Variable Transmission (EVT) and 300-volt nickel-metal hydride Energy Storage System (ESS) work in concert with the standard 6.0L V-8 gasoline engine with Active Fuel Management (AFM) and late intake valve closing (LIVC) technology to enable the Tahoe Hybrid’s efficient performance. This hybrid system not only enables the Tahoe to launch and drive up to 30 mph on electricity alone, it also allows the 6.0L V-8 engine to operate in its more economical V-4 mode for longer periods.
GM designed the EVT to provide the best combination of city and highway fuel economy. Used with the Vortec 6.0L V-8 engine with Active Fuel Management, it is an all-purpose system well-suited to providing excellent economy and full-size SUV passenger-carrying, cargo-hauling and trailer-towing capabilities.
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