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PCV valve

Tiny
BTOLER
  • MEMBER
  • 2007 GMC SIERRA
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 140,000 MILES
I understand that I do not have a PCV valve on my engine but a tube with an orifice in it on the back of the drivers side valve cover. The valve is not replaceable. Is it cleanable or do you have to replace the valve cover?
Saturday, February 24th, 2018 AT 5:48 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening.

The PCV valve is in the hose from the intake to the cover. It does remove from the cover.

Picture attached.

Roy
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Saturday, February 24th, 2018 AT 5:58 PM
Tiny
BTOLER
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One more thing, people tell me to spray permatex copper gasket sealant on the head gaskets and some tell me not to use anything. What is correct? Thanks!
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Thursday, March 1st, 2018 AT 5:23 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
That is not recommended. There is nothing required on the gaskets at all. By using that, you can damage the gasket as it may try and move and with this sealer, it will not be permitted to move and would rip and fail.

Roy
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Thursday, March 1st, 2018 AT 5:27 PM

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