leaking oil

2003 CADILLAC CTS
130,200 MILES • 6 CYL • 2WD • AUTOMATIC
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CLINZELL
  • MEMBER
  • 1 POST
2003 Cadillac cts is leaking oil from a small box on the upper right portion of the passenger side witch is attatched to a vacuum line. what is this silver box and why is the vacuum line be leaking oil?
Aug 6, 2011 at 9:08 PM
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FACTORYJACK
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 4,159 POSTS
Is it at the rear of the cylinder head, close to firewall? I believe what you are referring to is part of the crankcase ventilation system. There could be a blockage, or breather concern that is allowing oil into that unit. It is not a possibility the oil is coming from a cam cover and leaking onto that, is it?
Aug 8, 2011 at 2:28 AM
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