GMC Yukon Hybrid
From GMC press: Unique in the market, the GMC Yukon Hybrid and Yukon Denali Hybrid deliver an estimated 20 mpg in the city – with full-size SUV capability. The vehicles seat up to eight and can tow up to 6,200 pounds (2,812 kg). Electric drive is enabled up to 27 mph (45 km/h), saving fuel even when towing a trailer.
The Yukon Denali Hybrid luxury model is available; primary exterior differences include 22-inch, eight-spoke, flangeless chrome wheels.
The Yukon Hybrid’s fuel-saving performance is derived from GM’s advanced Electrically Variable Transmission (EVT) and 300-volt nickel-metal hydride Energy Storage System (ESS), which work with the standard 6.0L V-8 gasoline engine with Active Fuel Management (AFM) and late intake valve closing (LIVC) technology. GM’s hybrid technology system enables the Yukon to launch and drive up to 27 mph (43 km/h) on electricity alone and allows the Vortec 6.0L V-8 engine to operate in its more economical V-4 mode for longer periods.
In the Yukon Hybrid and Yukon Denali Hybrid, the hybrid system itself generates the electricity to propel the vehicle. When the brakes are applied or the vehicle is coasting, the electric motors in the hybrid system create electricity and store it in the 300-volt battery. This electricity helps move the vehicle.
First introduced on the 2008 Yukon Hybrid, the two-mode hybrid system provides seamless, dependable power on demand in an efficient package. In fact, its electric motor is less than half the size of those in single-mode hybrid systems. This technology was developed for and is still used in hybrid transit buses in more than 70 North American and European cities. Scaled down for use in passenger vehicles, the two-mode system delivers fuel savings where it is needed most – in vehicles with high levels of capability.