Asked by Daniel Mar 14, 2010 at 12:24 AM about the 2003 GMC Sierra 1500
Question type: Car Customization
so, im trying to get as much fuel mileage of out my truck as possible. its a '03 4x4 extended cab with 3.73 front and rear gears, k&n cold air intake and cherry bomb exhaust. i've got 285/50/r20 nitto dune grapplers on it. i'm getting about 15mpg on the highway. any suggestions?
so, im trying to get as much fuel mileage of out my truck as possible. its a '03 4x4 extended cab with 3.73 front and rear gears, k&n cold air intake and cherry bomb exhaust. i've got 285/50/r20 nitto...
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