Oil filler tube leaking at valve cover.

[99Vortec]

Before I pull the valve cover, is this serviceable? Is there a tightening mechanism/gasket, or is the filler tube integrated into the valve cover?

Thank's.

 

[SunlitComet]

i believe it was screwed in placed by an assembly machine of course so it will take some effort to get it off to replace the o-ring on it.

 

[BirchyBoy]

Or remove it and put the fill cap directly in the valve cover. That's what I did.

 

[99Vortec]

Thanks for the input. I got a left bank rear heated 02 sensor error surfacing at times.

Well at least both problems are on the same side of the motor...