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Fuel Management

GM Adds More ‘Xtra Fuel Economy’ Truck and SUV Models

August 26, 2008

DETROIT – GM announced on Aug. 12 the addition of fuel-efficient XFE versions of theChevy Silverado, GMC Sierra, Chevy Tahoe and GMC Yukon for the 2009 model-year.Chevrolet earlier in the year added the 36-mpg XFE model to itsCobalt lineup.

XFE stands for "Xtra Fuel Economy." These vehicleshave been equipped with fuel-saving technologies.

The vehicles use a combination of mechanical, aerodynamicand mass-reducing enhancements to deliver a 5-percent increase in EPA-estimatedhighway fuel economy and more than 7-percent improved mileage in city driving.Towing ratings for the Tahoe and Yukon are unchanged, while the Silverado and Sierra increase from 6,600 pounds to7,000 pounds due to the new, six-speed transmission and high-capacity coolingpackage.

The fuel-efficient vehicles are powered by a 5.3L FlexFuelV-8 (LC9) engine that's built with a mass-reducing aluminum cylinder block andheads. It is rated at 320 horsepower and 340 lb.-ft. of torque in Tahoe and Yukon and 315 hp and 338lb.-ft. in Silverado and Sierra.

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