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08 4.8 fuel mileage

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by RedneckTrucker, Feb 1, 2009.

  1. RedneckTrucker

    RedneckTrucker New Member

    what are people getting with the 08 4.8 v8s automatics. i have a crew cab and i get about 18 but what is suprising is my 96 ram 3500 diesel 5spd gets 25+
  2. mjalstad

    mjalstad New Member

    Is that calculated by taking your distance traveled between fill-ups divided by the gallons pumped in or is that just off of a display? Displays are never accurate. I can understand a 5 speed diesel getting better mileage than a gas truck but not that high. I have a 99 4.8 auto, just got 16.5 mpg (actually calculated, not from a display) driving 75 mph on a hilly highway.
  3. brownpridex111

    brownpridex111 New Member

    i think i get the same last time drove like 130 miles and i use like 1/4 of gas so im getting like 18 to 21 on freeway
  4. road rash

    road rash New Member

    14 city 19 hgwy
  5. nikkeshelton

    nikkeshelton New Member

    I used to get 17.6 mpg until I put 20" Denali wheels on. Now I get 15.6!

    ---------- Post added at 06:47 PM ---------- Previous post was at 06:43 PM ----------

    How do you feel about your long headers? How is your low end torque? The instalation? Trying to make up my mind!
  6. Z71_guy

    Z71_guy New Member 1000 Posts

    not surprising, my uncle has a 96 ram diesel that got in the low to mid 20s. My truck gets about 14mpg but that is all city driving no highway, rarely get above 45mph.

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