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  1. #1

    Default DIC's "Fuel Used" is always 3 Gallons off

    Any idea why my DIC's "Fuel Used" is always 3 Gallons off? Is there anything I can do to correct this?

    '05 GMC Yukon Denali AWD 6.0l V8
    Suncoast Ram Air Hood
    Flowmaster muffler
    DiabloSport Predator Tune

  2. #2


    I know that the calculations made by the "computer" on my truck is always on the high side. I always calculate my mileage myself and I show avg. of 1mpg low. I always "top off" the tank and the computer doesn't measure past the "automatic" cutoff. I don't know of any "fixes" other than not topping off the tank. Good luck!

    2010 Z/71 Colorado C/C
    Black 4X4 w/5.3L V8
    2007 Winnebago Adventurer
    w/8.1L Chevy & Allison 6spd.
    Canyon Lake, Texas

  3. #3


    Yeah, mine is also about 1-2 gal off. I just fill up when there is between 1/3 and 1/2 a tank of gas left. Problem solved.

    2009 GMC Sierra Denali AWD

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