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  1. #511


    Quote Originally Posted by black03silverado View Post
    the best i have gotten is 20.5 mpg!!!!!!
    20.5! That would be great. I have just finished my second full tank with 90% highway (60 miles round trip hwy to work and back) on cruz at 70mph and I have an average of 13.23mpg. I have the 2009 5.3 Z71 with flow master exhaust. I am putting the AFE intake on it next week and we will see what that does. Sofar I am pretty bummed on my average.

    Anyone suggest how a programmer could help?
    TJ - Baltimore, MD
    2009 Chevy Silverado Z71 Ext Cab 5.3L
    2002 GMC Envoy: Lowered, 20' Wheels, Borla Exhaust, AFE Intake / Spacer, JET Chip III, Upgraded Sway Bars.
    2000 Aprilia RSV Mille 1000
    2002 Aprilia RS 90

  2. #512


    I just check it out yesterday 17.2 all miles were around town. I drive a 2007 silverado club cab 4.8 auto. couple yrs ago I built a couple or 16 plate dry cell Hydrogen generators. I ran them in a 95 Buick Lesabar 4.8 v6 I never got to check the differance in the millage but there was a noticeable difference in performance. One of these days i'm going to set em up in this truck and see if we can increase that number

  3. #513
    Sr. Mechanic SmokeU's Avatar
    Join Date
    Aug 2009
    Fitchburg, WI


    info center says 15.3

    I like to have fun, what can I say? lol

    Ive gotten over 100 MPG while neutraling down a big hill tough ;)
    Last edited by SmokeU; 10-21-2010 at 09:48 AM.
    2004 Chevy Silverado w/ 5.3L V8 / Z71 / Shorty

    Would rather be going too fast then too slow:out:

  4. #514


    I have a 07 silverado Z71 reg cab 8 foot box and it says I get 14litres per whats that 20mpg? (Canadian truck)


  5. #515
    Sr. Apprentice
    Join Date
    Oct 2010
    Panama City Beach, FL.


    Well.. brand new '10 Silverado Crew Cab with the 5.3 L 4x4 Z71 package... I have a 21 mile trip to and from work daily full of nothing but red lights... I average about 15-18 mpg per tank. Typically boils down to whatever I do on the weekends.
    GO GATORS!!!
    2010 Chevy Silverado LT 4x4 Z71 Crew Cab
    5.3 L Vortec V-8
    Skid Plates
    Bluetooth, Steering Wheel Controls, Adjustable Pedals, all the goodies...:happy:
    Everything stock...

  6. #516


    Click image for larger version. 

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    I have a 30 mile drive each way (Highway) to and from work. So mostly highway miles.
    Last edited by TJsAprilia; 11-17-2010 at 10:19 AM.

  7. #517


    Truck: 05 silverado 2500HD crew cab short bed 80,000 miles
    MPG losing mods:35" tires, 4" lift, roll bar with KC lights.
    MPG gaining mods: superchip, intake, exhaust, premium fuel (93)

    dash read (hwy city combo): 15-16MPG
    HWY:16+ MPG
    after a long trip with my 26' covered car trailer with car in it: 9-10MPG

  8. #518


    I get about 11.5 mpg...ya thats pretty, actually really bad but its totally worth it!

    2002 Chevy Silverado 1500
    -7" Fabtech Lift
    -Gibson Dual Exhaust (headers all the way back)
    -K&N Cold Air Intake
    -35" BFGoodrich Mud Terrain KM2's
    -17" V-Tec Off Road Wheels
    -2% Tint All Around
    -Pioneer Head Unit, and Speakers, Tweeters All Around
    -Two 12" Kicker CVR Subwoofers
    -3000w Performance Teknique Amp
    -CB Radio, PA System
    -After Market Tail Lights
    -HID Head Lights

  9. #519


    Quote Originally Posted by crawfordguard View Post
    I get about 11.5 mpg...ya thats pretty, actually really bad but its totally worth it!
    ha you think thats bad

    i get 8-9, i have a 97 3/4 burb, 454, if i step on it really hard i can see the fuel gauge move, even with the 42gal tank
    1997 Chevy Burb 2500 4x4 - 454 (7.4L)
    265/75/162 BFs ATs
    Fule consumption 9 HPM -- (Hippies Per Mile)
    Fav accessory on it --- dirt and mud
    "Yes its virtually a tank and yes by god I drive like it is one too"

  10. #520
    Jr. Apprentice
    Join Date
    Jan 2011
    Milwaukee, Wi.


    does changing the fuel filter, give you better mileage. I have a 2002 chevy blazer 4.6L 4x4 on the old filter the fittings are rusted shut. I think it is the original one.

    Last edited by himo1123; 01-08-2011 at 02:16 PM.

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