petoworxExplorerMay 04, 2014mileage?hello all, in my 2006 gmc 2500 410 rear 4wd w lance 915 ive been getting around 12mpg for the past 6 yrs ,now im looking to upgrade to a 3500/f 350 maybe a diesil. just curious what kind of mileage a...Show More
campn4walleyeExplorerMay 04, 2014We too, get about 12 (10 if it's hilly or windy) with the TC fully loaded. It's the only reason we bought the dually. We said in the beginning of this, we didn't buy it for gas mileage, we got it to haul the heavy load.