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International Automotive Technicians Network
Re: 1999 Yukon Poor Fuel Economy
Posted to Technical Discussion Forum on 12/16/2004

Tire size, gear ratio, 2w4/4wd, transmission difference?

12-20 mpg is about max. I usually hear about 12-14 in town, and 17-20 on highway. The faster you drive, the lower the mpg.

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