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Duramax Diesel & 8.1L Big Block

The torque monsters. Tech for the LB7, LLY, LBZ, LMM, LML Duramax engines and the 8.1L Vortec (L18). Covers the Allison 1000 transmission.

585 topics in this forum

  1. 2006 Silverado voltage fluctuation

    By Collins803,
    • 0 replies
    • 1.3k views

  2. 2007 LMM Duramax Injector Return Leak

    By casey.mikl,
    • 2 replies
    • 2.5k views

  3. Duramax Oil Cooler Pipe HELP!!!

    By BuffaloPunch,   
    • 0 replies
    • 4.1k views

  4. Overnight Battery Drain

    By Dale H,
    • 2 replies
    • 3.8k views

  5. Bent frame

    By Micah Kauffman,
    • 5 replies
    • 2.5k views

  6. 2000 sil 1500 4wd horrible noise in gear help me

    By Terry Ken Payne,   
    • 5 replies
    • 1.1k views

  7. Can Bus No Crank No start

    By Atanas Dimitrov,
    • 0 replies
    • 2.2k views

  8. Led Turn Signal and Brake Bulb

    By Shae,
    • 9 replies
    • 2.3k views

  9. AC issues, mind blown…

    By mherbaugh,
    • 4 replies
    • 989 views

  10. Stock DL3

    By Thom Blair,
    • 0 replies
    • 1.1k views

  11. MOOG front end bushi ngs

    By Steve-Maine,
    • 0 replies
    • 1k views

  12. 06 GMC 2500 HD shocks

    By Steve-Maine,
    • 1 reply
    • 1.2k views

  13. 2000 Chevrolet 1500 Silverado 4x4

    By Jasmin,
    • 1 reply
    • 1k views

  14. remove electronic 4WD control andlock TC into 4WHI

    By PapaSteve,
    • 0 replies
    • 940 views

  15. Transmission overheating with no load

    By lea5090,
    • 1 reply
    • 2k views

  16. Blower Motor housing assembly

    By Elijah Paul,   
    • 0 replies
    • 4k views

  17. Brake switch?? 2011 applying brakes

    By Trucknogo,
    • 0 replies
    • 967 views

  18. 2007 GMC Sierra 2500hd Bose radio wiring diagram

    By Brian Hodgson,
    • 0 replies
    • 4k views

  19. Vibration 2006 silverado

    By Collins803,
    • 0 replies
    • 1.3k views

  20. Suspected Suspension Problem?

    By mecijan,
    • 0 replies
    • 1k views

  21. Engine loud ticking / clicking

    By Bradamoki,   
    • 3 replies
    • 3.9k views

  22. 2004 2500HD Ride Height

    By Cervi2015,   
    • 1 reply
    • 4.1k views

  23. 2004 rande shift inhibited

    By lee bradford,
    • 0 replies
    • 887 views

  24. Transmission oil cooler and lines

    By Tom Goodwin,
    • 2 replies
    • 1.7k views

  25. LBZ NO REVERSE LIGHTS

    By Duramax_06,
    • 1 reply
    • 5.7k views

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