low oil pressure
My 2005 Sillverado recently lost oil pressure
gauge dropped to zero. So I replaced the oil
pump and the guage still reads zero. My
truck is over 200,000 mi. Looking for any
So I gather it is not knocking or making any noise? If all is good there, There is a screen type basket under the oil pressure sending unit that has to be fished out and cleaned. They get full of crap not allowing the oil pressure sending unit to read properly.
did you perform an oil pressure test with a gauge, if is ok then you replace the oil sender, if doesn't fix it may need a cluster, repair
The cluster sounds like it's probably the culprit. I have a 2004 and there was a recall for the instrument clusters, but you're in the same boat as me. Too many miles for Chevy to honor the recall. I've got 7 gauges and only the Speedometer and Voltage work properly.
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