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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.


2,739 topics in this forum

  1. Starter bad already?

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  2. MBRP Exhaust Installed - 2014 Sierra Z71 5.3

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  3. Leaking Transmission

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  4. GM/Borla or Borla ATAK 1 2

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  5. Voiding factory warranty 1 2

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  6. Best Performance Cam?

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  7. Oil and Fuel Formula

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  8. V4 Delete

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  9. 2014 5.3 to 6.2 engine swap 1 2

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