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Engines & Drivetrain

Tech for the 5.3L (L83), 6.2L (L86), and 4.3L V6. Tuning and 6L80 / 8L90 transmission support.

2,728 topics in this forum

  1. 2016 Silverado LT - is my transmission going? Maybe my TC?

    By InsuredByBeretta,
    • 5 replies
    • 1.8k views

  2. Service 4wd message 2017 1500 Silverado

    By Cd264,
    • 2 replies
    • 869 views

  3. Statistically, How Prevalent Are Transmission, AFM, and Lifter Issues?

    By Muley,
    • 7 replies
    • 7.9k views

  4. Headers: long tube vs shorty's

    By hordy240,
    • 2 replies
    • 3.6k views

  5. Salvaging a L86 6.2L V8

    By CadillacLuke24,
    • 14 replies
    • 10.4k views

  6. 5.3L normal idle rpm 1 2

    By roweac,
    • 23 replies
    • 101.6k views

  7. Transmission Thermostat Delete Pros vs. Cons 1 2 3 4 14

    By Eddie 70,
    • 202 replies
    • 166.2k views

  8. L83 DoD Delete with L86 cam questions

    By UrbanRage,
    • 4 replies
    • 8.1k views

  9. 2014 GMC Sierra 1500 5.3 with 220k miles

    By teddyb1776,
    • 14 replies
    • 11.2k views

  10. 2015 Silverado - Burning Oil (Active Fuel Management)

    By Smith035,
    • 7 replies
    • 15.1k views

  11. 2018 gmc sierra with e assit

    By kinser,
    • 2 replies
    • 1.4k views

  12. Lv3 and afm

    By WranglerMike,
    • 2 replies
    • 1.9k views

  13. Trans cooler

    By BS2017,
    • 3 replies
    • 908 views

  14. 07 exhaust on 14 work??

    By jeromebuchanan0323,
    • 1 reply
    • 680 views

  15. Superior STL010, Complete Flush, How to Read Fluid Level??

    By wessidedabesside,
    • 3 replies
    • 3.9k views

  16. 2015 Sierra 1500 Denali with 6.2. Bent push rod!

    By videoarizona,
    • 3 replies
    • 3.9k views

  17. Knock Sensor

    By Bush Bandit,
    • 1 reply
    • 2.8k views
    • rav3
    • rav3

  18. Stabilitrak

    By Chevythunder2014,
    • 3 replies
    • 1.1k views

  19. Differences between 5CKA & 7CKA 6L80s

    By David Rinn,
    • 1 reply
    • 10.8k views

  20. 8 Speed Changed Fluid and Temperature Sensor - Now No 4th or 5th Gear

    By sturge33,
    • 1 reply
    • 943 views

  21. Free Spin kit for IFS

    By Grumpy Tooch,
    • 0 replies
    • 951 views

  22. Clunk/Pop on Acceleration and Stop

    By ECFR1963,
    • 1 reply
    • 1k views

  23. 2014 Silverado 4.3 RPM fluctuating while coasting 35-40mph

    By starzky,
    • 1 reply
    • 1k views

  24. 2014 chevy Silverado winding sound at 45-55 mph only when on throttle

    By Jeriah,   
    • 0 replies
    • 1.6k views

  25. high pressure fuel pump unobtainium

    By Jay Sparks,
    • 6 replies
    • 7.2k views

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