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Engines & Drivetrain (V8, Duramax, TurboMax)

Technical discussion for the 6.2L (L87), 5.3L (L84), 3.0L Duramax (LZ0/LM2), and 2.7L TurboMax. Tuning, maintenance, and 8-speed &10-speed transmission tech.

1,140 topics in this forum

  1. “Flipping pill” 10 speed and 170 t stat

    By lpg,
    • 11 replies
    • 2.8k views
    • lpg
    • lpg

  2. 2021 LM2 provent install

    By Pawg,
    • 1 reply
    • 1.3k views

  3. 3.0 Duramax S&B air intake discussion 1 2 3

    By Pswa320,
    • 41 replies
    • 44.1k views

  4. What is considered normal DEF usage for a 3.0L?

    By swervin36,
    • 4 replies
    • 1.6k views

  5. Getting exhaust done

    By Avery Dameron,
    • 9 replies
    • 1.8k views

  6. Headers

    By Ernest Crist,
    • 10 replies
    • 2k views

  7. 2019 Chevy Silverado 1500 (new body)

    By USMCCHEVY86,
    • 3 replies
    • 891 views

  8. Borla Touring or S Type on the fence

    By BamX31,
    • 12 replies
    • 19.3k views

  9. Beware: GM cold air intake 1 2 3

    By econometrics,
    • 34 replies
    • 20k views

  10. 5.3l TB muffler swap for magnaflow 12249

    By Meethead,
    • 4 replies
    • 3k views

  11. Help understanding Auto drive mode

    By GN2018,
    • 12 replies
    • 27.1k views

  12. Update on 2021 8 speed issues

    By dgstarr63,
    • 9 replies
    • 2.4k views

  13. Flappers open position on stock muffler

    By HighCountry MP,
    • 2 replies
    • 1.3k views

  14. 5.3 cam questions

    By Mitchell95,
    • 0 replies
    • 686 views

  15. Anyone else experiencing a rough idle/ shutter at idle

    By Rcfire,
    • 3 replies
    • 1.2k views

  16. Cv Shaft/Axle question

    By Alfredo Sanchez,   
    • 5 replies
    • 2.6k views

  17. Pinion seal bad? Pics included 1 2

    By zhmorrow,
    • 15 replies
    • 7.3k views

  18. Truck 6.2L (L87) vs Corvette 6.2L (LT2)

    By TxTruckMan,
    • 8 replies
    • 29.5k views

  19. It Was A Great 2 Days 1 2

    By zbomb,
    • 22 replies
    • 3.6k views
    • lpg
    • lpg

  20. 2018 Sierra e-assist 12 volt battery replacement

    By Jan Allen,
    • 0 replies
    • 6.7k views

  21. Hill Descent Control & Towing

    By JFD.,
    • 2 replies
    • 8.7k views

  22. 5.3 Low RPM 'Noise'

    By Matt G,
    • 3 replies
    • 1.3k views

  23. 2019 Silverado cabin rumbles when slowing down 1 2 3 4 8

    By Chevy11-19,
    • 105 replies
    • 28.6k views

  24. Screens or Flappers 1 2

    By Gangly,
    • 15 replies
    • 6.1k views

  25. Light off roading the 2021 Silverado Custom 2.5L

    By Phil O,
    • 2 replies
    • 967 views
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