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2000-2014 Silverado HD & Sierra HD

The workhorses. Discussion for the 2500HD and 3500HD heavy-duty trucks. Covers the 2014 HD transition year.

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  1. 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.

    1.7k
    posts

14,430 topics in this forum

  1. Interchangeable Body Parts

    By rustychevy,   
    • 11 replies
    • 76.2k views

  2. REMOTE START INSTALLED?

    By rhouseholder,
    • 2 replies
    • 1.3k views

  3. 6.0l Exhaust Flange after 3rd cat.

    By Leo Opalewski,
    • 4 replies
    • 1.1k views

  4. 2003 8.1L No oil pressure at guage

    By DeanHensler,
    • 1 reply
    • 1.4k views

  5. Largest 20" tire for '13 2500HD on Bilstein 5100's

    By eppyfish,
    • 0 replies
    • 1.1k views

  6. 03 6.0 2500hd: Reduced engine power, at my wits end

    By Terinass_sydwayz,
    • 2 replies
    • 1.5k views

  7. 2002 Silverado 2500 HD muffler Drain hole

    By StupidGirl,   
    • 4 replies
    • 1.5k views

  8. Knock Sensors 1 2

    By Michael31,
    • 24 replies
    • 18.9k views
    • txab
    • txab

  9. STeering wheel upgrade

    By Garfield,
    • 6 replies
    • 17.3k views

  10. 2007 Silverado 2500HD Transmission Slipping

    By Motogrrl,
    • 5 replies
    • 2.8k views

  11. 06 2500Hd white mounts under bed

    By Steve-Maine,
    • 1 reply
    • 897 views

  12. Bed Swap to a 2020? is it possible?

    By pepsijgf24,
    • 4 replies
    • 13.7k views

  13. Servicing my 2012 GMC 2500 6.0

    By MORSNO,
    • 2 replies
    • 1.6k views

  14. Transfer case

    By Patm1980,
    • 3 replies
    • 2k views

  15. Blower Fan not Strong

    By JohnThomas70,
    • 1 reply
    • 960 views

  16. Blinking Check Engine light 1 2

    By TedSJr,
    • 26 replies
    • 49.6k views

  17. Headlights always on? -- 2002 Sierra 2500 HD

    By omgitsgela,
    • 8 replies
    • 19.2k views

  18. stuck in 4low

    By Pooble,   
    • 3 replies
    • 5.2k views

  19. Service 4WD message on 2004 2500

    By Colossus,
    • 1 reply
    • 2.7k views

  20. Average 6L90e Mileage

    By sdeeter19555,
    • 5 replies
    • 2.9k views

  21. 2013 Rear Power Sliding Window Regulator Replacement

    By AppDawg,
    • 1 reply
    • 8k views

  22. Looking for help identifying a noise

    By hayden90,
    • 3 replies
    • 878 views

  23. Turbo Boast Control Position Sensor

    By Steve-Maine,
    • 0 replies
    • 551 views

  24. Any way to keep cluster lights on during the day?

    By Jason Norris,
    • 4 replies
    • 1k views

  25. Cabin filter for 06 GMC 2500HD

    By Steve-Maine,
    • 4 replies
    • 5.5k views
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