Best guess as to fuel mileage on these trucks
Gang - I am trying to put a pencil to my options and as such am trying to figure out what each of the following would get as combined MPG for my spreadsheet. In an effort to compare apples to apple...
Forum Discussion
Ralph Cramden wrote:
2015 GMC Sierra 4WD SLE 6.0 Double Cab 8' bed.
Highway average 15.3
City Average 10.2
Towing Average 7.7 towing 6500 lb trailer
Those numbers are IDENTICAL to the fuel economy I used to get with my 2004 Chevy 2500 HD with 6.0L. Basically 11 model years' difference and the exact fuel economy. Power has went up a bit during that time, but still the same mileage numbers.
BTW, that's not a criticism just an observation. That drivetrain is very reliable on those trucks.
KJ
