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  • David Godair
    Posts: 1
    #1515687

    Good morning.
    In 2012 I bought a 6.0 2012 GMC Ext Cab 2WD. My usage is in the oil patch. I kept getting stuck in mud so I replaced it in 2013 with an crew cab GMC 4×4 also 6.0 engine.
    The first truck would get as high as 15MPG, the second 11 – 14MPG.
    In 2014 I upgraded to the 6.6 Duramax. It is also a crew cab with 4×4. The fuel mileage is 17.9 average and the power seems like it is double. I will never go back. You forget your towing something it is so strong.
    That’s my experience. Good luck to you with the new ride.

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