This topic contains 1 reply, has 2 voices, and was last updated by 
Richard Kirshy 2 years, 3 months ago.
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Topic
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GM 4.3 150K miles.
Oil pressure gauge is fluctuating.
How likely is it the oil pressure sending unit?
How likely is it the oil pump?
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Please elaborate on your meaning of fluctuating.
Do you mean the gauge is bouncing at any given rpm or are you seen a drastic drop in oil pressure once the engine is at operating temp ?
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