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2019-2025 Silverado & Sierra Engine & Transmission (L3B/L82/L84/L87/LM2/LZ0)

Technical Discussion, help, and advice for the Chevy Silverado and GMC Sierra small block engines,6/8/10 speed transmissions, along with factory and performance exhausts.
 L3B 2.7L Turbo, L82/L84 5.3L & L87 6.2L, and LZ0/LM2 3.0L Duramax Diesel Engines. 

1,039 topics in this forum

  1. 5.3L RST: Looking For Mild-Sounding Exhaust

    By Dreww,
    • 3 replies
    • 3.2k views

  3. Help identifying which axle

    By NorthskyblueT1,
    • 4 replies
    • 1.6k views

  4. 2.7T Oil Change

    By Grandpa1,
    • 3 replies
    • 18.1k views

  5. Maker of GM Performance Exhaust

    By Anacortes Army Guy,
    • 1 reply
    • 929 views

  6. Maintenance to early?!? Am I crazy?!?

    By TylerRST,
    • 6 replies
    • 1.7k views

  7. Amsoil 0W-20 and 5W-30 meets GM dexosD 1 2 3

    By The Pirate,
    • 37 replies
    • 26.1k views

  8. FlowFX vs Borla Touring 1 2

    By darks1d3,
    • 21 replies
    • 11k views

  9. Tow haul= no AFM/DFM?

    By RPaul,
    • 5 replies
    • 14.4k views

  10. Gear ratio of new truck. Please help a newbie!

    By Weshawk5,
    • 7 replies
    • 1.3k views

  11. Broke the tabs on PVC pipe

    By arkenzo,
    • 4 replies
    • 1.4k views

  12. New handheld programmers

    By 570590,
    • 9 replies
    • 2.2k views

  13. Magnaflow 19489 Catback on 6.2

    By Yfz43gmc,
    • 7 replies
    • 2k views

  14. Transmission fluid temperature

    By saenz Steve,
    • 2 replies
    • 1.1k views

  15. 2019 5.3 Engine Oil capacity

    By sams819,
    • 8 replies
    • 89.2k views

  16. Stainless Works true dual set up 1 2

    By Robby James,
    • 15 replies
    • 3.6k views

  17. 3.0L engine noise on acceleration 1 2

    By Mercracing,
    • 21 replies
    • 18.6k views

  18. 3.0 Duramax exhaust system leak test

    By ATfore,
    • 1 reply
    • 2.7k views

  19. Magnetic drain plug

    By MikeDP,
    • 2 replies
    • 887 views

  20. ECM

    By bigdog2005,
    • 0 replies
    • 491 views

  21. Factory Dual Exhaust Question

    By Diamond817,
    • 2 replies
    • 1.3k views

  22. Rear wheel locked into place

    By Denali2019,   
    • 3 replies
    • 2.8k views

  23. 2021 Trail Boss left me stranded. Owned for 16 hours.

    By Whiskeyranch,
    • 12 replies
    • 5.2k views

  24. Flapper valve warranty

    By KShi,
    • 2 replies
    • 1.1k views

  25. Muffler/flapper delete single exhaust

    By KShi,
    • 0 replies
    • 779 views

  26. Blue Smoke

    By Crazyleggs,
    • 11 replies
    • 7.1k views


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