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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15181
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I have change the oil pump put a new oil feed unit on my

Customer Question

I have change the oil pump put a new oil feed unit on my 2005 Silverado 4.8 and it still registers low oil pressure the pressure comes up to 25% then goes back down
Submitted: 9 months ago.
Category: Chevy
Expert:  Roy replied 9 months ago.

good afternoon my name is ***** ***** I will assist

when you had the pan down, did you drop a main and rod bearing??? they are usually the real issue with low oil pressure.

was the pick up screen clogged with debris??

Roy

Customer: replied 9 months ago.
there was no debris
Expert:  Roy replied 9 months ago.

ok, and the bearings?????

Customer: replied 9 months ago.
didn't drop a main or rod bearing although there is a tap in the engine whish sound like lifters
Expert:  Roy replied 9 months ago.

ok, the lifters are making noise most likely from the lack of pressure. you will need to check the bearings as they most likely are the cause of the low oil pressure

Roy