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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Mechanical - 2.8L (LWN) Diesel) >> Diagnostic Information and Procedures >> Compressor Air Intake Turbocharger Whine Noise

Compressor Air Intake Turbocharger Whine Noise

WARNING: This page is about a different variant/trim than selected.

Special Tools 

J 46091  Charge Air Cooler Tester

Condition Action
Some whine noise is normal. Compare to a known good vehicle.
Leaking charge air cooler/pipes/hoses Inspect for leaks in charge air cooler/pipes/hoses using J 46091  tester.
Worn turbocharger bearings Visually inspect for evidence of compressor wheel to housing contact.
If the turbocharger bearings are worn or damaged, inspect for a restricted turbocharger oil feed line.
Intake system leaks or obstructions
  1. With the engine off, pressurize the intake system using J 46091  tester and inspect for intake manifold leaks.
  2. Inspect for obstructions in the intake manifolds.
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