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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. How often do you change your oil? Do you do it by the book? 1 2 3

    By dudleykid,   
    • 35 replies
    • 31.8k views

  2. Let me see all the other 6.0 gas trucks towing heavy 1 2 3

    By 03chebby,
    • 35 replies
    • 15.7k views

  3. 1500 6.2L OR 2500HD 6.0L (2013) 1 2 3

    By MN07MAX6,   
    • 35 replies
    • 45.9k views

  4. What GM motors are in your fleet 1 2 3

    By yukon25008.1,
    • 35 replies
    • 6.4k views

  5. Low Drone Or Drone Free 6.0 Muffler? 1 2 3

    By 1829,
    • 35 replies
    • 26.4k views

  6. Hid's 1 2 3

    By Kodiak450,
    • 35 replies
    • 12.6k views

  7. Tow/haul Not Working 1 2 3

    By ss502gmc,
    • 34 replies
    • 109.4k views

  8. 2500HD vs 1500 Which to own? 1 2 3

    By MVP9182,
    • 34 replies
    • 3.8k views

  9. Plow setup 1 2 3

    By 00integrals,
    • 34 replies
    • 27.6k views

  10. Best Replcement Battery Value? 1 2 3

    By Blue2500CC,
    • 34 replies
    • 5.6k views

  11. Just Weighed My Truck 1 2 3

    By Shatterz,
    • 34 replies
    • 7.6k views

  12. Broken Exhaust Manifold Bolt 1 2 3

    By Jcol,
    • 34 replies
    • 60.1k views

  13. My first 3/4 ton 1 2 3

    By Provost33,
    • 33 replies
    • 6k views

  14. Truck randomly dies 1 2 3

    By NA8THEGR8,   
    • 33 replies
    • 37.8k views

  15. 2500 HD quit running while idling 1 2 3

    By Fossil Rock,
    • 33 replies
    • 6.6k views

  16. New brake pads, pedal goes to the floor 1 2 3

    By Lee Nettnin,
    • 32 replies
    • 21.5k views

  17. Dealership damaged my truck, what can I do? 1 2 3

    By Sphinx1655,
    • 31 replies
    • 4.6k views

  18. Afternarket Diff covers 1 2 3

    By jamesgmc,   
    • 31 replies
    • 5.4k views

  19. What rotors? 1 2 3

    By sdeeter19555,
    • 31 replies
    • 4.2k views

  20. Some Maintenance I have done to my truck today. 1 2 3

    By Grubbworm,
    • 31 replies
    • 5.2k views

  21. Anyone else burn firewood? 1 2 3

    By 8.1HD/ALLISON,   
    • 31 replies
    • 4k views

  22. Trans cooler mounting question 1 2 3

    By sdeeter19555,
    • 31 replies
    • 3.2k views

  23. How to get clean engine sludge from inside of engine? Severely clogged 1 2 3

    By td0922,
    • 31 replies
    • 21.1k views

  24. 8.1L Engine Stall 1 2 3

    By KurtMcMouth,
    • 30 replies
    • 42.4k views

  25. Just bought first GM truck, looking for some advice 1 2 3

    By troverman,
    • 30 replies
    • 4.9k views

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