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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.

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14,430 topics in this forum

  1. Help needed

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  2. Upgrade

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  3. Front End Vibration

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  4. Rear Wheel Seal

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  5. In cab filtr

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  6. Coil Pack wierdness

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  7. Pitman arm replacement

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  8. 305 vs 315 on pyo wheels

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  9. Air bag light

    • 5 replies
    • 559 views
    • 2 replies
    • 537 views
    • 1 reply
    • 586 views
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