Low oil pressure after reaching operating temperature

1993 GMC VANDURA
111,000 MILES • 5.0L • V8 • 2WD • AUTOMATIC
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MCAMPBELL 459
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Oil pressure is normal until vehicle warms up and idling when temperature is normal. Then drops close to orange, but the engine does not make any noise. Could this be the oil pressure sending unit?
Oct 22, 2018 at 8:02 AM
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STRAILER
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Yes, it could be the oil pressure sending unit. I would change the oil and use 20/50 which will keep better pressure. Here is the oil pressure sender location below.

Here is a guide that can help check out the diagrams below.

https://www.2carpros.com/articles/how-to-change-engine-oil-and-filter

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken
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Oct 23, 2018 at 11:26 AM
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MCAMPBELL 459
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Sending unit fixed the problem. Thank you
Oct 26, 2018 at 8:47 AM
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STRAILER
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Nice work, we are here to help, please use 2CarPros anytime.

Cheers, Ken
Oct 26, 2018 at 10:38 AM