The Sierra Hybrid is offered in a Crew Cab bodystyle, in either 2WD or 4WD, and is powered by a 6.0-liter V8 engine that includes Active Fuel Management giving it the ability to run as an economical V4 when full power isn't needed. The Electrically Variable Transmission works with a 300-volt nickel-metal hydride battery system to allow the vehicle to launch and drive up to 30 mph on electric power alone. Other features such as electric-assist power steering and low rolling resistance tires help to provide a 25-percent improvement in overall fuel economy. Safety features include four-wheel disc anti-lock brakes, front and side curtain airbags, electronic stability control and tire pressure monitoring.
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