GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2006
🢒
Avalanche - 2WD
🢒
Engine
🢒
Engine Controls - 8.1L
🢒 Crankcase Ventilation System Inspection/Diagnosis
A plugged positive crankcase ventilation (PCV) pipe/passage way may cause:
•
Rough idle
•
Stalling or slow idle speed
•
Oil leaks
•
Sludge in the engine