Low oil pressure 15-20 lbs

Tiny
MIKE SUTPHEN
  • MEMBER
  • 2006 GMC YUKON
  • 6.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 255,000 MILES
Low oil pressure 15-18 lbs idling when cold and it might go up to 25 Lbs when idling warm sometimes it doesn't go higher.
I replaced the sending unit and it reads lower now than it did before. It had noisy lifters once or twice but not now. I changed the oil and filter and use the right stuff 5-30 oil. A few times it went into limp mode very low power and I stopped and turned it off and restarted it and it ran okay again.
I suspect it is the oil pickup o-ring causing this but want another opinion.
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Wednesday, December 11th, 2019 AT 12:43 PM

1 Reply

Tiny
KEN L
  • ADMIN
Hello,

This usually happens when the oil pump pick up gets clogged up due to lack of maintenance. I would remove the oil pan to inspect. The instructions of the oil pan removal are in the diagrams below.
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Thursday, December 12th, 2019 AT 4:08 PM

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