Oil pressure reads 20 with just accessories on, 60-75psi, while driving , what is problem?

Asked by Jun 15, 2017 at 04:06 PM about the 2007 Chevrolet Silverado 1500 LTZ Crew Cab 4WD

Question type: Maintenance & Repair

5.3 L

3 Answers

77,815

These are normal oil pressures. No problem. If you start to see oil pressures under 20 lbs, there is a screen under the oil pressure sending unit that gets gummed up, causing a false oil pressure reading, may even shut the engine down. At that point it is just a matter of pulling the oil pressure sending unit, and fishing out the screen from the hole. Either clean it or replace it.

1 of 1 people found this helpful.

I replaced o.p. sender after oil pressure dropped to zero, now o.p. Fluctuates with rpm, a lot more than it used to. 50-65, Any ideas?

77,815

Clean that screen I mentioned.

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