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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. Transmission Cooler

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  2. CB Radios

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  3. ideas on sub box

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  4. Headliner Blues

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  5. BFG tires

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  6. tire pressure

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  7. 6 bolt dually?

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  8. 6.0L fuel milage

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  9. exhaust tips

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  10. Changing rear gearing

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  11. mpg on 8.1

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  12. HD Part Microfiche

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  13. Speedhitch

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  14. I need more tone

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