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02-09 Vortec 4.2L I-6 Engine and Drivetrain

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OEM Issues

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Air Induction

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Performance Exhaust Modifications
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Engine Tunes/Mods

Performance Engine Tuning/Engine Modifications
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4x4 Repairs & Problems
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02-09 Vortec 4.2L I-6 Engine and Drivetrain Q&A forum for engine and drivetrain repairs/modifications/tuning.
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