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Discussion Starter #1
I have a 2005 Cadillac CTS 3.6l v6 that I’m trying to replace the spark plug tube seals on. Are these removable or do I need a whole new valve cover? I been trying to pry at them and can’t get them out.

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2007 CTS 3.6 >129k miles
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If you are referring to the metal that appears to be bent in your image, that metal piece is part of the seal. The whole thing comes out. See this vid about 1:15 for a better image (and note the large pry bar).

Another option is to flip the cover over and put a screwdriver into the hole, then use a hammer to pop it out. Note that this only works if you can catch the inside of the seal with the screwdriver tip.
 
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