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Engines & Drivetrain

Tech for the 5.3L (L83), 6.2L (L86), and 4.3L V6. Tuning and 6L80 / 8L90 transmission support.


2,741 topics in this forum

  1. What is this?

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  2. Muffler help please 1 2

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  3. 4/6 lowering issues

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  4. Valve cover removal

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  5. 3k Mile OCI 1 2 3 4 5

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  6. Disabling V4 1 2

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  7. CAI question

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  8. Turbo 6.2 almost done!! 1 2 3 4 14

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  9. Sierra 1500 Fuel Injector Replacement

    • 1 reply
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