Low oil pressure, could it be the oil pump or the oil sensor?

2000 GMC SIERRA
300,000 MILES
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MUDRULZ
  • MEMBER
  • 4 POSTS
Start up in the morning and have oil pressure but as soon as it is warmed up the oil pressure goes to 0 psi.
Nov 21, 2011 at 10:56 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
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.
Nov 21, 2011 at 11:00 AM
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