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Not an engine guy.

949 Views 11 Replies 5 Participants Last post by  dhavi4226
I just bought a ‘17 Acadia Denali and have a question. Forgive my ignorance, but what is the rust looking circular component to the left of the oil filler cap? Not a picture of my engine, but have the same component. Thanks in advance.
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It is the horn, the other note is on the left front area.
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