Hybrids, XFE, & Active Fuel Management

574 topics in this forum

1. E-85 Refueling Events 1 2 3 4 5

   By minibike132, April 19, 2008
   • 66 replies
   • 68.6k views
   • 
   • RhinoGuy
   • November 10, 2015

3. Unlocking lifter.....VLOM problem? 1 2 3

   By Ryan Bokros, December 29, 2016
   • 37 replies
   • 105.5k views
   • 
   • Johnny Dash
   • March 3, 2022

4. 8.1L Gas Mileage

   By ptmeyer84, July 11, 2006
   • 0 replies
   • 90.3k views
   • 
   • ptmeyer84
   • February 6, 2011

5. How to disable AFM? 1 2

   By jester73, October 30, 2012
   • 25 replies
   • 74.5k views
   • 
   • CamGTP
   • October 11, 2019

6. 4spd (4l60e) Vs 6spd (6l80e) Mileage Difference

   By Duramaximum, August 25, 2009
   • 0 replies
   • 42.7k views
   • 
   • Duramaximum
   • March 19, 2010

7. Hho Silverado Mod

   By H2O4GAS, August 6, 2008
   • 0 replies
   • 37.8k views
   • 
   • H2O4GAS
   • April 13, 2011

8. Replaced engine 5.3L due to AFM. Turn off AFM now?

   By bidders, December 27, 2016   

   • afm
   • reburbished gmc engine
   • (and 4 more)

     Tagged with:

     • afm
     • reburbished gmc engine
     • 5.3l gen 4
     • oil consumption
     • disable afm
     • range afm
   • 11 replies
   • 34.8k views
   • 
   • swathdiver
   • January 6, 2021

9. Tach not working, Service stabilitrack, rough idle!!! 1 2

   By king_strut, December 13, 2020
   • 17 replies
   • 33.3k views
   • 
   • Lkramer
   • April 5

10. 6.2 Gas Milage..... 1 2 3 4

    By 04SILVRADO, April 13, 2011
    • 54 replies
    • 32.2k views
    • 
    • Cowpie
    • September 9, 2015

11. How Many Miles Do You Get On A Full Tank Of Gas?

    By Mckenzie, October 25, 2010
    • 0 replies
    • 32.1k views
    • 
    • Mckenzie
    • November 24, 2010

12. 2500hd 6.0l Gas Mileage. 1 2

    By mrose, December 13, 2010
    • 27 replies
    • 28.8k views
    • 
    • 8.1HD/ALLISON
    • December 25, 2011

13. 5.3l Gas Saving Mods? 1 2 3

    By Badshot, May 10, 2011
    • 42 replies
    • 28.7k views
    • 
    • MedicPilot
    • April 10, 2012

14. E85 Conversion Kits

    By racerx55, May 15, 2007
    • 0 replies
    • 27.4k views
    • 
    • racerx55
    • July 4, 2008

15. Active Fuel Management Issues.

    By hd2500407, May 10, 2009
    • 0 replies
    • 26.2k views
    • 
    • hd2500407
    • October 31, 2009

16. Gas Mileage 1 2 3 4 8

    By reidrhollander, February 14, 2011
    • 110 replies
    • 25.9k views
    • 
    • uchi
    • November 30, 2011

17. 2010 Gmc 5.3l Mileage

    By dcheeseman, April 20, 2010
    • 0 replies
    • 24.8k views
    • 
    • dcheeseman
    • December 7, 2010

18. High Mileage AFM 5.3 1 2

    By JaBradt85, March 16, 2013
    • 16 replies
    • 24.6k views
    • 
    • swathdiver
    • March 28

19. Increase My Fuel Economy 1 2 3 4

    By BrandonM, September 6, 2009
    • 54 replies
    • 24.5k views
    • 
    • bg1988
    • August 20, 2019

20. Fuel Filter In 2004 Sierra 5.3?

    By Keebs, December 27, 2008
    • 0 replies
    • 23.8k views
    • 
    • Keebs
    • March 29, 2010

21. AFM DOD Delete, will not start? 1 2

    By jstanley00, December 12, 2018
    • 22 replies
    • 23.7k views
    • 
    • rehak1
    • February 25, 2022

22. 6.2l Mpg Thread

    By BBC71Nova, June 6, 2010
    • 0 replies
    • 22.9k views
    • 
    • BBC71Nova
    • February 6, 2011

23. Anyone with E-85 use it??

    By mjweaver, February 24, 2007
    • 0 replies
    • 22.9k views
    • 
    • mjweaver
    • September 29, 2008

24. Lower Gears Higher Highway Mpg? 1 2 3

    By TheGreekIndian, December 25, 2010
    • 44 replies
    • 22.2k views
    • 
    • kstruckcountry
    • January 14, 2012

25. Reduction In Mileage Tire Change 245 To 265 1 2

    By rat454, October 19, 2011
    • 18 replies
    • 22k views
    • 
    • rat454
    • March 8, 2012

26. Best Grade/station Of Gas Is Best? 1 2 3 4

    By c.j., May 24, 2011
    • 54 replies
    • 21.2k views
    • 
    • BigBlueLB756
    • December 22, 2016