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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 130 (Engine Mechanical - 3.6L (LF4) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Compressor Air Intake Turbocharger Whine Noise

Compressor Air Intake Turbocharger Whine Noise

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
Condition Action
Some whine noise is normal. Compare to a known good vehicle.
Worn turbocharger bearings Visually inspect for evidence of compressor wheel to housing contact.
Inspect for worn or damaged turbocharger bearings.
Inspect for end play causing compressor wheel to housing contact.
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