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Gen III & Gen IV V8 Engines (LS-Based)

The legendary small blocks. Tech for the 4.8L, 5.3L, 6.0L. Discussion on AFM Delete kits, cam swaps, and the 4L60E/4L80E transmissions. Also covers the 2-Mode Hybrid.

8,159 topics in this forum

  1. 2013 GMC Sierra 5.3 Oil Cooler Block Off Plate Plug

    By CBO,
    • 3 replies
    • 7.2k views

  2. mind boggling misfire/backfire everything has been checked HELP

    By Cory Martel,
    • 1 reply
    • 903 views

  3. Clicking noise 10-15 mph

    By Amckinney,
    • 3 replies
    • 1.5k views

  4. Front brake problem on 2011 Avalanche

    By Service1956,
    • 2 replies
    • 1.4k views

  5. 2012 Tahoe LT active fuel management issue 1 2

    By Drakecloude96,
    • 25 replies
    • 6.4k views

  6. 2002 Chevy Silverado engine swap

    By Kurt Schaedig,
    • 1 reply
    • 2.4k views

  7. 3.08 to 3.73 Gear ratio on 2013 Silverado with 35s??

    By Matt2013LT,
    • 5 replies
    • 5.5k views

  8. Back to stock

    By kentyoder,
    • 1 reply
    • 872 views

  9. 2003 GMC Sierra BCM replacement

    By AIphabet,   
    • 0 replies
    • 1.4k views

  10. 8L90 transmission swap in 99-07 4WD trucks?

    By Chris Hansen,
    • 1 reply
    • 8.1k views

  11. 5.3 lack of power about 3500 rpm

    By 4x4chevyrig,
    • 0 replies
    • 1k views

  12. 2008 Sierra with 2" rough country leveling kit tire size

    By Austin Gravelle,
    • 0 replies
    • 713 views

  13. 04 Burb L59 PCM/Fuel Gauge Issue

    By GMT800Dude90,
    • 0 replies
    • 717 views

  14. 2013 Silverado Axle and Differentials chart?

    By elric,
    • 5 replies
    • 8.8k views

  15. Blue Exhaust Smoke

    By BigballR,
    • 3 replies
    • 1k views

  16. 2013 Silverado tach not working

    By Myd150,
    • 1 reply
    • 2.4k views

  17. 2001 silversdo 4x4 delayed shift and sputtering on acceleration

    By Fabian Burton,
    • 0 replies
    • 1.3k views

  18. 2001 silverado 1500 5.3L secondary air monitor won’t complete

    By 01Silverado2wd,   
    • 1 reply
    • 5k views

  19. Oil pressure gauge low pressure

    By Ausreed93,
    • 1 reply
    • 1k views

  20. SOLVED: 2001 Chevy Tahoe; Crankshaft Relearn problem caused by Neutral Safety Switch (PNP signal)

    By CB CG,
    • 2 replies
    • 8.2k views

  21. New lifters

    By Ausreed93,
    • 2 replies
    • 1.2k views

  22. A/C compressor

    By Cowboy476,
    • 14 replies
    • 2.3k views

  23. Frame rust

    By Ausreed93,
    • 14 replies
    • 1.7k views

  24. My darn truck won't crank

    By EdGein72,
    • 5 replies
    • 1k views

  25. 2006 Tahoe Z71 4WD. Front Diff Dry.

    By SmokChsr,
    • 5 replies
    • 1.2k views
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