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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine Mechanical - 2.8L (LWN) Diesel) >> Diagnostic Information and Procedures >> Compressor Air Intake Turbocharger Hissing Noise

Compressor Air Intake Turbocharger Hissing Noise

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Condition Action
Air inlet leaks or obstructions Inspect for leaks or obstructions in the turbocharger inlet pipes/hoses.
Leaking charge air cooler/pipes/hoses Inspect for leaks or obstructions in the charge air cooler/pipes/hoses using J 46091  charge air cooler tester
Leaking or restricted exhaust system
  1. Inspect for a leak in the exhaust system.
  2. Inspect for a restricted exhaust system.
Intake system leaks or obstructions
  1. With the engine off, pressurize the intake system using J 46091  charge air cooler tester and inspect for intake manifold leaks.
  2. Inspect for obstructions in the intake manifolds.