Hybrids, XFE, & Active Fuel Management

574 topics in this forum

1. 2500hd 6.0l Gas Mileage. 1 2

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

3. 1 St E-85 Fill Up 1 2

   By FrankJB, May 22, 2011
   • 27 replies
   • 6.2k views
   • 
   • the blur
   • December 19, 2011

4. Truck Caps And Fuel Economy

   By c0boy, April 14, 2011
   • 14 replies
   • 7.9k views
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   • NHSilverado
   • December 15, 2011

5. interesting fuel economy increase

   By uchi, December 5, 2011
   • 3 replies
   • 2k views
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   • uchi
   • December 13, 2011

6. Cold Air Intake?

   By pbmboy, August 31, 2011
   • 14 replies
   • 4k views
   • 
   • ifshinxs
   • December 3, 2011

7. flex fuel and shelf life ?

   By d.mehrl, November 27, 2011
   • 8 replies
   • 2.2k views
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   • AzDragonLord
   • December 1, 2011

8. Gas Mileage 1 2 3 4 8

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

9. 07 Silverado Afm Questions

   By nashss, October 6, 2011
   • 3 replies
   • 3.1k views
   • 
   • frdfandc
   • November 26, 2011

10. 2009 Sierra 5.3. Horrible Fuel Economy. Help! 1 2 3

    By Parsonsjb88, October 3, 2011
    • 32 replies
    • 20.5k views
    • 
    • RockySierra
    • November 24, 2011

11. Mpg With 22" Vs 20" Wheels

    By bhsballer76, August 30, 2011
    • 8 replies
    • 12.5k views
    • 
    • BlackZ71Silverado
    • November 6, 2011

12. Top Tier Gas - Citgo?

    By blairlee, October 28, 2011
    • 12 replies
    • 6.9k views
    • 
    • RockySierra
    • November 2, 2011

13. Gas Mileage Mpg Increase With Air Deflector Extension

    By disarticulate, July 8, 2011
    • 12 replies
    • 13.4k views
    • 
    • sic lsx
    • October 26, 2011

14. Tune?

    By BigRed41, October 20, 2011
    • 3 replies
    • 1.5k views
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    • Stevens03
    • October 20, 2011

15. 08 Chev Silverado 1500

    By Ballard, August 18, 2011
    • 0 replies
    • 3.7k views
    • 
    • Ballard
    • September 22, 2011

16. 2011 Gmc Sierra 1500 5.3 4x4 3.42 Axle

    By Horsewithnoname, April 13, 2011
    • 0 replies
    • 17k views
    • 
    • Horsewithnoname
    • September 9, 2011

17. Premium Gas = Better Mileage

    By sack1, August 28, 2011
    • 0 replies
    • 6.7k views
    • 
    • sack1
    • September 3, 2011

18. Towing On E-85

    By mike94silverado, April 16, 2011
    • 0 replies
    • 7.2k views
    • 
    • mike94silverado
    • August 20, 2011

19. 2011 Dmax Mpg

    By HDGMC, April 19, 2011
    • 0 replies
    • 5.9k views
    • 
    • HDGMC
    • August 19, 2011

20. Not As Bad As I Was Expecting

    By THABULL, August 18, 2011
    • 0 replies
    • 1.6k views
    • 
    • THABULL
    • August 18, 2011

21. Fuel Efficiency Issues

    By GerryL98, August 1, 2011
    • 0 replies
    • 1.7k views
    • 
    • GerryL98
    • August 3, 2011

22. 6.2l Fuel Economy Mpg

    By zacharywhitson, July 25, 2011
    • 0 replies
    • 2.5k views
    • 
    • zacharywhitson
    • July 27, 2011

23. Throttle Body Spacers

    By dwhitton, July 22, 2011
    • 0 replies
    • 5.9k views
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    • dwhitton
    • July 25, 2011

24. Actual Fuel Economy

    By redkaz04, July 21, 2011
    • 0 replies
    • 2k views
    • 
    • redkaz04
    • July 21, 2011

25. When Do You See Issues?

    By AzDragonLord, July 18, 2011
    • 0 replies
    • 1.7k views
    • 
    • AzDragonLord
    • July 18, 2011

26. How Can I Get My Gas Mileage Back?

    By jtupper, July 7, 2011
    • 0 replies
    • 2.2k views
    • 
    • jtupper
    • July 7, 2011