Plug on back of intake by oil sending unit

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07BlackLTZs

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So I was changing the oil sending unit on my 07 Tahoe and while feeling around back there I found an extra plug that was not plugged in. Best I could tell it looked like a 4 pin connector. Any idea what it might go to?
 

Joseph Garcia

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Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.
 

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