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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.

8,157 topics in this forum

  1. 2013 SLE Sierra To 2008 Escalade Interior/Seat Swap

    By Frieds185,
    • 1 reply
    • 882 views

  2. proper Body mount hole size for ordering a new frame (1999 Chevrolet Silverado 1500)

    By Ryan Williams II,
    • 2 replies
    • 835 views

  3. Cylinder 5 misfire - sorry, long post... but stumped

    By mckpaul,   
    • 11 replies
    • 79.2k views

  4. Engine Knock - Rod or Flexplate/Flywheel?

    By Greg571,
    • 8 replies
    • 9.1k views

  5. Rod knock ☹️

    By tragic origin,   
    • 1 reply
    • 720 views

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

    By king_strut,
    • 23 replies
    • 64.2k views

  7. Advice on putting an already built 08 stage 4 cam the works and the built transmission into my 03 Silverado 1500

    By Tyler12,
    • 1 reply
    • 509 views

  8. 2011 bogging down, hesitation,stutter.

    By jomac0321,
    • 7 replies
    • 13.3k views

  9. 2013 Sierra 5.3 AFM MPG

    By Big5,
    • 3 replies
    • 2.5k views

  10. Tahoe missfire issue

    By justme1212,
    • 2 replies
    • 1k views

  11. Oil pressure issue after afm delete

    By Jonathan Santos,
    • 10 replies
    • 4.1k views

  12. 05 engine in 07 classic (gmt800)?

    By SpinelessCord14 Smith,
    • 4 replies
    • 1.1k views

  13. 6.2 L9h baffling issue/s

    By TheBlkzr2,   
    • 1 reply
    • 528 views

  14. Vacuum gauge reading help

    By tyler2136,
    • 3 replies
    • 1.3k views

  15. 2000 gmc sierra 1500 transmission issue

    By Tim duncan,
    • 1 reply
    • 771 views

  16. Hyper flashing on passenger side front and rear

    By Tat3,
    • 1 reply
    • 740 views

  17. Low growling/groaning from driveline

    By Beltbuckle Bill,
    • 1 reply
    • 645 views

  18. 06 silverado ticking at warm idle

    By Zack Horwitz,
    • 8 replies
    • 25.3k views

  19. I have an 02 GMC sierra that shifts funny.

    By roosternugget,
    • 0 replies
    • 520 views

  20. Still P0894 (transmission component slipping) after rebuild and a refurbished

    By laborde2122,
    • 5 replies
    • 13.6k views

  21. Rough Idle, Service Stabilitrak, Service TC, PO 122 PO 223

    By Patrick Afams,
    • 0 replies
    • 468 views

  22. 2007 Silverado Classic Brake issues…PLEASE HELP!!

    By CCMC,
    • 13 replies
    • 16.6k views

  23. Loud rattling when rpms drop

    By Will Back,
    • 6 replies
    • 1.2k views

  24. High Mileage AFM 5.3 1 2

    By JaBradt85,
    • 20 replies
    • 29.6k views

  25. Advice for rear end lifted 4x4

    By tina swaim,
    • 5 replies
    • 534 views
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