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Advanced Drivetrain, Suspension & Tuning

Deep dives into mechanical theory. Gear swaps, transmission rebuilding, solid axle swaps (SAS), and HP Tuners / ECU calibration.

6,735 topics in this forum

  1. 6" vs 5" lift

    By KrustyCraftsmen,
    • 0 replies
    • 791 views

  2. 75-90 ok?

    By Dexter10,
    • 6 replies
    • 999 views

  3. Clicking sound R Turn after stop, Pulling Trailer, or SLOW climb

    By fwbennett,
    • 3 replies
    • 1.2k views

  4. Taking my lift off

    By Calebnewman,
    • 2 replies
    • 1k views

  5. 4l60e leaks

    By Graycharles88,
    • 0 replies
    • 822 views

  6. catalyst convertor chices: high flow

    By barry G,
    • 3 replies
    • 1.4k views

  7. Billstein Adjustable 5100's and 2" Zone Leveling Kt

    By dirtfan21,
    • 1 reply
    • 1.2k views

  8. 4l80 engages but wont move

    By Lettinn,
    • 1 reply
    • 1k views

  9. 97 GMC Sierra 1500 Stuck in 3rd Gear w/ no codes

    By CasperDC,
    • 0 replies
    • 2.6k views

  10. Quick 2007 Silverado "Service 4x4" Question

    By Beebe,
    • 2 replies
    • 780 views

  11. P0300 code driving me nuts!

    By Yukon25006.0,
    • 3 replies
    • 4k views

  12. Resetting computer?

    By shockedimpy,
    • 5 replies
    • 2.8k views

  13. Airlift suspensions helper spring removal

    By Silveradochase,
    • 1 reply
    • 920 views

  14. 2003 suburban 4x4 problems

    By Jonathonensz,
    • 3 replies
    • 953 views

  15. Help! Noise On Upshift

    By Bradleyb85,
    • 0 replies
    • 829 views

  16. Which Tune: 87/89 octane or 91/93 octane tune

    By Vetteran,
    • 5 replies
    • 8.6k views

  17. No lights on 4x4 panel, no 4x4

    By lucas.a.bradshaw,   
    • 1 reply
    • 1.2k views

  18. Quick question about diablosport

    By michigan2500hd,
    • 4 replies
    • 1.8k views

  19. 4.3l offroad?

    By thefez510,
    • 0 replies
    • 881 views

  20. 8L90 M5U Hydra-Matic automatic transmission clunking and lunging

    By alejalva,
    • 5 replies
    • 5.9k views

  21. Lift Kit installation options in Northern IL

    By Mike Spence,   
    • 1 reply
    • 1.5k views

  22. 2003 Silverado 1500HD upgrade help?

    By 6.0HD,
    • 2 replies
    • 4.9k views

  23. I want to put Black bear tune in my 2015

    By nymn003,
    • 4 replies
    • 2k views

  24. Anyone have 07.5-13 Truck that is lifted?

    By BamaSilverado,
    • 0 replies
    • 791 views

  25. *New User* 2000 Silverado Suspension Mods

    By R3d,
    • 0 replies
    • 1.1k views
    • R3d
    • R3d
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