I know its a big machine and it's suppose to be a gas hog, but it must get probably 5 miles per gallon! Which is horrible... is there anything I can do to it... or is there anything that could be causing it to eat gas so badly?
make sure your tires are inflated enough and you could get a new intake (cold air or short ram) which might make it a little better. Don't accelerate fast and when driving downhill drive in neutral.