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6.6L (LML/L5P) & 6.0L (L96/LC8) Tech

Technical discussion for the 2015-2016 Duramax 6.6L Turbo-Diesel V-8 (LML),  2017-2019 Duramax 6.6L Turbo-Diesel V-8 (L5P) and Vortec 6.0L V-8 (L96 / LC8) in the 2015-2019 Silverado HD and Sierra HD applications. Also includes, drivetrain, transmission, axles, differentials, and exhaust systems.

158 topics in this forum

  1. Torque converter

    By FLORIDAMK,
    • 3 replies
    • 297 views

  3. Make tow mirror parking lights blink with turn signal

    By Tx_operator87,
    • 13 replies
    • 786 views

  4. Diesel 1 2

    By cmysstailights,
    • 20 replies
    • 312 views

  5. Particulate filter not working

    By Jim Dunham,
    • 8 replies
    • 396 views

  6. 2015 Silverado 2500hd fuel consumption

    By Udacha,
    • 5 replies
    • 397 views

  7. Turbo spool noise

    By RACERX4772,
    • 2 replies
    • 198 views

  8. DEF heater failure and engine light 1 2

    By Jnich17,   
    • 22 replies
    • 20,912 views

  9. 2015 Duramax: Cold Oil Pressure Bounces Off "0"

    By jasonvp,
    • 8 replies
    • 708 views

  10. Unusual DEF Behavior

    By TMac99,   
    • 4 replies
    • 4,982 views

  11. 2016 GMC Sierra 2500HD Service Trailer Brake System/Check Trailer Connection

    By GMCNuneZ71,
    • 4 replies
    • 308 views

  12. From 1/2 ton to 1 ton Duramax

    By Ron505,
    • 7 replies
    • 338 views

  13. 2015 brake job

    By ryanhardy,
    • 10 replies
    • 1,164 views

  14. Reverse lights in towing mirror 1 2 3

    By Lon Bossom,
    • 37 replies
    • 16,327 views

  15. Emissions problem and the dealership

    By Petrolhead,
    • 0 replies
    • 165 views

  16. New to me 2015 Denali hd diesel

    By cperk,
    • 5 replies
    • 491 views

  17. Fuel Mileage L5P 1 2

    By Peterd,
    • 22 replies
    • 17,778 views

  18. Ltz supposed to have LED lights

    By junction44,   
    • 11 replies
    • 1,351 views

  19. Regen

    By DBeau,
    • 5 replies
    • 568 views

  20. 2017 L5P runaway!!!!!engine gone.. scary..now what? 1 2

    By cowboy86,
    • 18 replies
    • 1,761 views

  21. 2018 Chevrolet 2500 HD rear tire spin 1 2

    By Hanover123,
    • 21 replies
    • 869 views

  22. 6.0 Surging while Cruising at Low RPM

    By bigsby,
    • 11 replies
    • 5,229 views

  23. Shell Rotella T6 15W-40

    By EXSlider400,
    • 8 replies
    • 365 views

  24. Transmission fluid change 2015 6.0 1 2

    By ryanhardy,
    • 20 replies
    • 1,449 views

  25. How accurate is the inclinometer?

    By Icutmetl,
    • 3 replies
    • 446 views

  26. Oil life on factory fill

    By Revspan,
    • 9 replies
    • 707 views


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