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Home >> GMC >> 2004 >> Sierra 2500 HD, 2D Pickup, 6.6 2, RWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.6L (LLY) (Introduction) >> Description and Operation >> Air Intake System Description >> Notes

Air Intake System Description: Notes

The air intake system is used to direct cool air from the exterior of the engine compartment to the intake manifold. An air cleaner is incorporated into the system to keep dirt from entering the engine. The system also has a turbocharger to increase power, improve driveability and reduce emissions.