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6.0 gas mileage

Discussion in 'General Chevy & GM Tech Questions' started by jdog468, Feb 11, 2009.

  1. jdog468

    jdog468 New Member

    I am considering buying a late model 3/4 ton 2wd suburban. Does anyone know what kind of gas mileage the 6.0 liter motors get?
  2. bry2500

    bry2500 Epic Member 5+ Years 1000 Posts

    I got a 2002 Avalanche 2500 with the 8.1L and it gets 11/13. So the 6.0L can't be worse than that. if this helps.
  3. TRPLXL2

    TRPLXL2 Epic Member 5+ Years 1000 Posts Platinum Contributor

    I had a 2004 2500 HD 3/4 Silverado with the 6.0, and it got a steady 14.0 mpg highway/side roads.:great:
  4. 002500rebel

    002500rebel New Member

    i own a 2000 chevy 2500 with the 6.0 and get about 12 mpg avg. but it dosnt help that im 17 and like to go fast haha i drove real well one time and got 15 i was stoked
  5. sask boy

    sask boy New Member

    Hi this a bit of a pun gas mileage on a 6.0 to the next gas station. I have owned 2 to best I could get is 14 mgp.
    Most of the gas mileage problem is gear ratio.
  6. silver2000

    silver2000 New Member

    2000 Silverado 2500 6.0. The highest I have gotten in the summer time is 13.8. In the winter time is between 9 to 11. I am very disappointed. Helping the inlaws move the last 2 weeks. Drive with 16 ft enclosed trailer, V front going no faster than 65 typically averaged 60mph in drive with tow mode on travel time 4.5 hours with one stop half way between and I got 6.35 miles per gallon. Didn't think this was possible. Temp here is between 20 and 30 degrees F. Drove as conservative as humanly possible. I am a chevy man and father inlaw is a Ford man. I was embarrassed. I love the truck but this mileage is terrible. My dad has the 5.7l in his silverado and I can't feel any power difference. His mileage is much better also. If I wasn't going to sell it to get a 4 door truck I would spend some cash to try an increase the mpg this summer.
  7. benhartholt

    benhartholt Rockstar

    I agree completely.. My dad has an 04 2500HD and it is brutal on gas mainly because of the gear ratio.. we're looking into a gear swap for it, it might be a possibility for you too.
  8. Jimmiee

    Jimmiee Epic Member 5+ Years 1000 Posts

    3/4 ton trucks with 4.10 gears have always gotten poor gas mileage. The reason is the 3/4 ton truck is made to tow and haul weight. If you want your 2500 to do what it's designed to do please don't change the gears. You will be disappointed.
  9. benhartholt

    benhartholt Rockstar


    I know.. we bought the HD to tow our 22 foot boat.. but my truck is a 2500 with the 5.3 and it tows it awesome.. the HD's look way tougher though so we couldnt pass it down.. haha :)
  10. Hamelfire

    Hamelfire Member

    2008 chevy 2500 CC 6.0 the best I have seen is 14 in the summer, 10-12 is probably the best your going to do

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