Q: I need a new oil pump on my 2004 gmc yukon, I have low oil pressure, I recently changed the oil so I know oil level is good

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I get low oil pressure when the truck idles once I accelerate pressure goes up to normal, I have changed the oil sensor unit thinking it was that, still keep getting the same reading now I know the oil pump might be failling

My car has 165000 miles.
My car has an automatic transmission.

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