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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1628 (Engine Mechanical - 6.6L (LMM) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Turbocharger Oil Leak From Compressor Seal

Turbocharger Oil Leak From Compressor Seal

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Condition Action
IMPORTANT: Oil in the turbocharger air inlet duct,oil on the compressor wheel, and oil throughout the charge air cooler system is normal with a closed PCV system. Do not attempt repairs for this condition.
Restricted air system Inspect for clogged air filter element or restricted air inlet system.
Restricted exhaust system Inspect for a restricted exhaust.
Leaking exhaust system. Inspect for exhaust manifold leaks.
Poor oil drainage from turbocharger Inspect for restricted turbocharger oil drain pipe.
Restricted crankcase ventilation system Inspect for restricted crankcase ventilation system.
Worn internal engine components Inspect for excessive blowby or engine oil consumption.
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