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2003 GMC Sierra 3500
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1 Product found

1 Q&A for Oil Filler Cap Repair
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  • STANT Dexos SAE 5W-30 Oil Filler Cap for 2003 GMC Sierra 3500 - 10099
    Product Specifications
    • Freight Class: 100
    • UPC: 033342001992
    • Part Description: 2003 GMC Sierra 3500 Dexos SAE 5W-30 Oil Filler Cap
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 3500 | All Trims | 8 Cyl 6.0L
    • 2003 GMC Sierra 3500 | All Trims | 8 Cyl 6.6L
    • 2003 GMC Sierra 3500 | All Trims | 8 Cyl 8.1L
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FAQ for Oil Filler Cap Repair

Q: What is the cause of the malfunction of the engine oil filler?
A:
Under extreme cold temperatures (-34°C (-30°F) or colder) and extended driving conditions, the PCV system may experience a freezing condition and shut off all crankcase gases to pass through the PCV system. This may cause crankcase pressure to rise steadily and, in some cases, this high pressure unseats (pushes out) the oil level indicator from the indicator tube and causes an oil leak during engine operation.
By Bob
GM Specialist
01/11/2022