it depends on your tire size. just multiply your tire size (inches) by .13 and that will give you the gears for back to factory settings. or by .14 to give you more torque. or if you want it for gas, then multiply it by .12 and whatever gears are closest to that number will give you the best gear ratio. on my silverado, i got 35' tires and im running 5.13 gears for more torque. you can deffinitely feel the difference on take off. i can spin my tires with positraction on my stock motor.
Alas, Yukon currently has no official song.
The EPA mileage estimate for the 2012 GMC Yukon is 15 mpg in the city, 21 mpg on the highway.
The EPA mileage estimate for the 2010 GMC Yukon is 15 mpg in the city, 21 mpg on the highway.
The EPA mileage estimate for the 2005 GMC Yukon is 14 mpg in the city, 19 mpg on the highway.
The EPA mileage estimate for the 2007 GMC Yukon is 14 mpg in the city, 19 mpg on the highway.
The EPA mileage estimate for the 2004 GMC Yukon is 14 mpg in the city, 18 mpg on the highway.
The EPA mileage estimate for the 2006 GMC Yukon is 14 mpg in the city, 19 mpg on the highway.
The EPA mileage estimate for the 2014 GMC Yukon is 15 mpg in the city, 21 mpg on the highway.
The EPA mileage estimate for the 2013 GMC Yukon is 15 mpg in the city, 21 mpg on the highway.
The EPA mileage estimate for the 2008 GMC Yukon is 14 mpg in the city, 19 mpg on the highway.
The EPA mileage estimate for the 2002 GMC Yukon is 13 mpg in the city, 18 mpg on the highway.
The EPA mileage estimate for the 2011 GMC Yukon is 15 mpg in the city, 21 mpg on the highway.