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The most likely answer is the oil pressure control switch (aka oil pressure sending unit). costs around 4 dollars and 5 minutes to replace. It's right behind the distributor cap.

Bad bearings , a whole in the block , or a bad sending unit . Which one sounds most likely ?

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โˆ™ 2009-01-09 04:52:49
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Q: What would cause a 1988 Chevy Silverado 1500 to lose oil pressure?
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