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Hybrids, XFE, & Active Fuel Management

GM's Hybrid Trucks & SUVs, thel saving XFE model, and the Active Fuel Management system for the 2007-2013 model years.

563 topics in this forum

  1. 2012 GMC Sierra 1500

    By Kalebelswick,
    • 2 replies
    • 326 views

  3. 2009 Sierra 1500 HVAC only does full hot OR cold

    By MikeCanada,
    • 4 replies
    • 802 views

  4. Can a built 5.3 from a 99' sierra run e85 normally?

    By Mario Marquez,
    • 6 replies
    • 1.1k views

  5. Smell gas and no visible leaks

    By Darren Place,
    • 1 reply
    • 244 views

  6. Driver side signal and brake lights

    By BassWood Outdoors,
    • 3 replies
    • 305 views

  7. Silverado Part ID

    By Oorah-wesome,   
    • 1 reply
    • 445 views

  8. left turn and brake light problem

    By Richard F Hale Jr.,   
    • 0 replies
    • 318 views

  9. Header+Exhaust HP?

    By Gooseslayer717,
    • 4 replies
    • 374 views

  10. Multiple misfires on every cylinder at idle

    By Chrisp,
    • 5 replies
    • 455 views

  11. New to me truck has thrown 3 codes already. Needing help

    By Thomas Sword,
    • 0 replies
    • 774 views

  12. XFE Fuel Economy

    By swathdiver,
    • 2 replies
    • 438 views

  13. Gas leak

    By Sng1989,   
    • 7 replies
    • 598 views

  14. Increase My Fuel Economy 1 2 3 4

    By BrandonM,
    • 54 replies
    • 23.8k views

  15. A/C starts Cold then goes warm

    By gosforth,
    • 2 replies
    • 415 views

  16. Compatible rear axles

    By Drastic396,   
    • 4 replies
    • 638 views

  17. Help, Weird rapid clunk and thunp felt in brake pedal

    By dchfm123,
    • 4 replies
    • 340 views

  18. Oil pump? Afm Cylinder 4 misfire

    By My07sh*tbox,   
    • 6 replies
    • 3.4k views

  19. Question about afm 1 2

    By Pgrecs,   
    • 19 replies
    • 2k views

  20. Z71 Confusion

    By JacobM529,
    • 1 reply
    • 491 views

  21. MAP and MAF issue rough idle vacuum leak 592-600 idle rpm

    By bg1988,
    • 0 replies
    • 359 views

  22. What was/is GM Thinking??? 1 2 3 4

    By NHUSA,
    • 46 replies
    • 2.9k views

  23. 2012 GMC Sierra

    By William Henderson,
    • 1 reply
    • 509 views

  24. Non opening valve after start up 5.3 amf

    By Bigbassman001,
    • 1 reply
    • 627 views

  25. Help! Little big of white smoke coming from exhaust?

    By enorwood22,   
    • 1 reply
    • 951 views

  26. Driving me crazy dash noise

    By BBonez910,
    • 2 replies
    • 362 views


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