What is your question?
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What is your question?
oil pressure guage keeps moving up and down and then stays at zero then moves back to where it needs to be.
2 Replies
Most likely it's the oil pressure gauge sensor failing, assuming that the oil's up to level, in good condition and the engine doesn't make funny noises. Either install a new sender or put a test oil pressure gauge on the engine ASAP so you know that you have good oil pressure.
It's a 3 wire switch on side of engine block. Wire colors are black, gray, tan/white.
Where is the oil sending unit located on the 2007 chevy express cargo van 3500 engine?