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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. 

963 topics in this forum

  1. Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) will not be available on certain 2021 model year Silverado 1500/Sierra 1500 pickups 1 2 3 4 7

    By MS3DALE,
    • 92 replies
    • 59.7k views

  3. 3.0L Duramax - who owns or has driven one 1 2 3 4 40

    By redwngr,
    • 596 replies
    • 206.7k views

  4. Does anyone regret getting the 5.3L over the 6.2? 1 2 3 4 16

    By BrooklynBravest,
    • 230 replies
    • 43.5k views

  5. BORLA Exhaust for the 2019+ Silverado/Sierra 1500 1 2 3 4 16

    By ian@borla,
    • 230 replies
    • 70.2k views

  6. New Range Pulsar 1 2 3 4 15

    By Jac365,
    • 217 replies
    • 63.7k views

  7. $20 Exhaust Fix 2019 5.3 z71 1 2 3 4 14

    By ShamrockShooter,
    • 199 replies
    • 93.9k views

  8. First oil change mileage 1 2 3 4 13

    By ish,
    • 181 replies
    • 50.5k views

  9. Performance Upgrade Package 1 2 3 4 9

    By brothernov,
    • 132 replies
    • 79.7k views

  10. 3.0 Duramax DEF consumption 1 2 3 4 8

    By Firetrout,
    • 108 replies
    • 99.4k views

  11. 2019 Silverado cabin rumbles when slowing down 1 2 3 4 8

    By Chevy11-19,
    • 105 replies
    • 21.7k views

  12. What Engine You Chose and why VOTE 1 2 3 4 8

    By Big_Kahuna,
    • 105 replies
    • 22.5k views

  13. ANOTHER COld Air Intake Thread! 1 2 3 4 7

    By Ed/2020RST,
    • 96 replies
    • 39.4k views

  14. Lifter issue: TSB PIP5776E - published June 18 1 2 3 4 7

    By 1500guy,
    • 91 replies
    • 27.8k views

  15. Oil consumption 2019 Silverado 2.7 1 2 3 4 6

    By Dave-Minnesota,
    • 88 replies
    • 20.4k views

  16. 5.3L Exhaust thread 1 2 3 4 6

    By Jremm15,   
    • 87 replies
    • 50.2k views

  17. 2019 T1 8 speed Shifting 1 2 3 4 6

    By bearded_warrior,   
    • 85 replies
    • 20.8k views

  18. 2019 5.3L ECM Tuning 1 2 3 4 6

    By yankeedoodle86,
    • 81 replies
    • 45.5k views

  19. 5.3 vs 6.2 drag race 1 2 3 4 6

    By 19AT4,
    • 78 replies
    • 24.1k views

  20. 10 speed Transmission Hot - Please help 1 2 3 4 6

    By ArthurW,
    • 77 replies
    • 7.8k views

  21. Dealer vs Owner oil changes 1 2 3 4 5

    By Bigfoot98,
    • 69 replies
    • 9.4k views

  22. Resonators gone new mesh screens replace them 1 2 3 4 5

    By Black02Silverado,
    • 67 replies
    • 62.8k views

  23. Pulling DFM fuses 1 2 3 4 5

    By 03blackz71,
    • 67 replies
    • 20.6k views

  24. 3.0 Duramax exhaust smell in cab 1 2 3 4 5

    By IcemanNY,
    • 66 replies
    • 44.3k views

  25. Chevy Shake 1 2 3 4 5

    By Sierradude,
    • 65 replies
    • 23.7k views

  26. Lifter/pushrod failure questions? 1 2 3 4 5

    By Adamace1,
    • 63 replies
    • 10.3k views


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