I have a 01 Yukon with the 5.3 L and the 3:73 diff and im getting around 8-9 mpg in the city and its NOT towing or having extra weight in it? how to get better fuel economy?
NOPE NEVER GOING TO sell it its awesome but would changing the spark plugs and some other things better fuel economy?
NOPE NEVER GOING TO sell it its awesome but would changing the spark plugs and some other things better fuel economy?