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CRANKCASE VENTILATION SYSTEM INSPECTION/DIAGNOSIS DRIVE BELT CHIRPING, SQUEAL, AND WHINE DIAGNOSIS Diagnostic Aids A chirping or squeal noise may be intermittent due to moisture on the drive belts or the If the noise is intermittent, verify the accessory drive components by varying their loads Symptom Correction External oil leak Inspect for any of the following conditions: Restricted positive crankcase ventilation (PCV) orifice Restricted or kinked PCV hose or engine vent hose Damaged, incorrect, or incorrectly installed PCV hose Excessive crankcase pressure Rough Idle Inspect for any of the following conditions: Restricted PCV orifice Restricted or kinked PCV hose or engine vent 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 PCV orifice Restricted or kinked PCV hose or engine vent hose Leaking (damaged) PCV hose High idle speed Inspect for a leaking (damaged) PCV hose Sludge in the engine Inspect for any of the following conditions: Restricted PCV orifice Restricted or kinked PCV hose or engine vent hose
2008 Hummer H3 2008 ENGINE Engine Mechanical - 5.3L - H3
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