Oil pressure gauge on a 2006 GMC Sierra 1500 4X4.
I have a 2006 GMC Sierra 1500 pickup. My oil pressure gauge is as high as it
goes (80) but when I take off from a stop it drops down momentarily and then
jumps right back up to high (80). Any ideas as to what my be wrong?
Sounds like a faulty oil pressure sender, and while your right there make sure the little screen is nice and clean that sits just below the sender assembly inside the tube.
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