Mechanics

LOW OIL PRESSURE, COULD IT BE THE OIL PUMP OR THE OIL SENSOR?

2000 GMC Sierra • 300,000 miles

Start up in the morning and have oil pressure but as soon as it is warmed up the oil pressure goes to 0 psi.
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Mudrulz
November 21, 2011.




If you hear any knocking or ticking, the pressure is low and most likely the pump. If there is no noise, chances are it is the oil sending unit. Cheap and easy fix.



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