Low oil pressure
I have a 2004 GMC Yukon XL SLT
5.3L at warm idling oil pressure is
between 10 and 15 psi I have
changed sending unit switch, oil
pump and connecting rod bearings
still have low oil pressure at idle
What is the connecting rod bearing clearance? What is the main bearing clearance?
Sounds like you'll have to replace the main bearings. Like Bob is saying, check to make sure the clearances are within spec.
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