Originally Posted by sako4me
I have a 21 GMC Sierra AT4 with the 3.0. My fuel range per tank is somewhere between 800 to 820ish per tank. I usually fuel up close to 750 miles. I get between 30-34 mpg driving back and forth to work about 84 miles a day.



30-34 mpg?
11 to 12 hours cruising range.....
oh hell.