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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. ZF 6 speed with 8.1L or Duramax

    By gmguy,
    • 0 replies
    • 15.2k views

  2. ZF 6sp Hydraulic Clutch

    By Engineer,
    • 0 replies
    • 12.4k views

  3. ZF-6 clutch is "popping"

    By 8.1Texan,
    • 0 replies
    • 957 views

  4. ZO6 Wheels

    By Dubyagee_93_Silverado,
    • 0 replies
    • 1.6k views

  5. Zoomers Exhuast on a 2500HD 6.0L

    By Jimmy J,
    • 0 replies
    • 879 views
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