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Message: <blockquote data-quote="Marky Dissod" data-source="post: 26496" data-attributes="member: 13218">If you don't find out why, then I guess you like it well enough, eh? If you really don't like it, gotta find out:Is that in fact an accurate reading? More than one place to check oil pressure. If you get a higher reading, the GM OE oil pressure sender has its own issue.Just before you're about to do an oil change, while engine is still running, check idle oil pressure again, then point it nose down / hind up, check again.Then add 2qt of oil while the nose is still down and check the oil pressure again.If oil pressure goes up noticeably, there's an O-ring you can replace that'll raise your oil pressure in all other positions.</blockquote>