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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

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  1. 4L80E problems 1 2

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  2. Tires

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  3. 2010 Fog Lights

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  4. Valve Cover Gasket

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  5. Shifting issues

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  6. Leaking Coolant??

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  7. Cruise control

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  8. 02 sensors

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  9. Fuel Tank Capacity 1 2

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  10. bad fuel???

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  11. No DRLs

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