GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2003
🢒
Yukon XL - 2WD
🢒
Brakes
🢒
Hydraulic Brakes
🢒 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