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GMC Yukon EPA Fuel Economy: 12-14 city/ 16-20 hwy Available Engines: 295-hp, 4.8-liter V-8 320-hp, 5.3-liter V-8 320-hp, 5.3-liter V-8 (flexible) 380-hp, 6.2-liter V-8 Available Transmissions: 4-speed automatic w/OD 6-speed automatic w/OD and auto-manual Related: Gas-guzzling SUVs and light trucks become an obstacle for marketersGeneral Motors