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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
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14,430 topics in this forum

  1. Pics Of Your H.d 1 2 3 4 26

    By anteater,
    • 377 replies
    • 133.5k views

  2. How many miles do you have on your 6.0 liter motor? 1 2 3 4 22

    By john857,
    • 319 replies
    • 164.4k views

  3. Hole in my Transfer Case 1 2 3 4 9

    By Wardster,
    • 134 replies
    • 191.2k views

  4. 2012 3500HD Shaking at Highway Speeds 1 2 3 4 8

    By therink,
    • 111 replies
    • 43k views

  5. Duramax VS 8.1L 1 2 3 4 8

    By SSSilverado23,
    • 108 replies
    • 48.2k views

  6. 2003 Chevy Silverado 1500 Runs Horrible 1 2 3 4 7

    By Jacob11531,
    • 100 replies
    • 10k views

  7. Ways To Increase Gas Milage In 04 2500HD 1 2 3 4 7

    By dizzle6988,
    • 92 replies
    • 20.6k views

  8. 6.0 vs. 8.1liter engine 1 2 3 4 6

    By carload4916,
    • 87 replies
    • 216.2k views

  9. Interior swap 1 2 3 4 6

    By 08gmc17,
    • 84 replies
    • 217.4k views

  10. Heavy Duty Owners Without A Purpose 1 2 3 4 6

    By atxman,
    • 81 replies
    • 16.5k views

  11. 2011 2500hd 6.0 misfire 1 2 3 4 6

    By casey.mikl,
    • 79 replies
    • 54.8k views

  12. Assessing a used 3500 8.1 1 2 3 4 5

    By maxpower29,
    • 69 replies
    • 8.9k views

  13. Cheap 6.0L Upgrades 1 2 3 4 5

    By 03'Silverado2500HD,   
    • 66 replies
    • 102.6k views

  14. No 4x4 traction in 4 inches of snow?? 1 2 3 4 5

    By bbill,   
    • 62 replies
    • 19.3k views

  15. Vibrations at 70MPH; 2011 2012 2500/3500HD 1 2 3 4 5

    By Domano 68,
    • 61 replies
    • 43.2k views

  16. I can not spin my tires. Makes me mad 1 2 3 4

    By Tyler Hogsten,   
    • 59 replies
    • 18.7k views

  17. My 2000 Chevrolet Silverado 2500 1 2 3 4

    By insidethreat07,
    • 57 replies
    • 10.3k views

  18. Talk me out of a Dodge Diesel 1 2 3 4

    By takethebounce,   
    • 57 replies
    • 10.4k views

  19. Dpf Is A Piece Of Junk Or The Lmm Duramax Is 1 2 3 4

    By NONSTOP SPEED,
    • 57 replies
    • 46.4k views

  20. Why Does A Person Buy An Hd Truck? 1 2 3 4

    By davzog,
    • 57 replies
    • 10.7k views

  21. My 8.1 2500hd Just got smoked by a PT cruiser Turbo 1 2 3 4

    By kurt1993,
    • 53 replies
    • 8.9k views

  22. 2500 HD Dmax?s 1 2 3 4

    By gotcha,
    • 53 replies
    • 8.6k views

  23. 2500 Hd Exhaust 1 2 3 4

    By hass1500,
    • 53 replies
    • 45.9k views

  24. 2014 Duramax 1 2 3 4

    By AgDoctor,
    • 53 replies
    • 9.9k views

  25. Looking to move up to 2500... questions 1 2 3 4

    By GMCSooner,
    • 52 replies
    • 7.3k views

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