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Home >> Chevrolet >> 2022 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Mechanical - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Crankcase Ventilation System Inspection/Diagnosis

Crankcase Ventilation System Inspection/Diagnosis

WARNING: This page is about a different variant/trim than selected.
Symptom Correction
External oil leak Inspect for any of the following conditions:
  • Restricted or kinked PCV hose.
  • Damaged, incorrect, or incorrectly installed PCV hose.
  • Excessive crankcase pressure.
Rough Idle Inspect for any of the following conditions:
  • Restricted or kinked PCV hose.
  • Leaking (damaged) PCV hose.
  • Vacuum hoses worn or not properly installed.
Stalling or slow idle speed Inspect for any of the following conditions:
  • Restricted or kinked PCV hose.
  • Leaking (damaged) PCV hose.
High idle speed Inspect for a leaking (damaged) PCV hose.
Sludge in the engine Inspect for restricted or kinked PCV hose.
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