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Message: <blockquote data-quote="ORVietVet" data-source="post: 21938" data-attributes="member: 9438">Like [USER=11733]@INW-Iron-Steel[/USER] has said about the oil pressure stepper motor, I bet it is bad. I bought my listed truck on Dec. 1 and all was good. Then it started to act like the 40 psi level was actually the "0" pressure level. Everything started at 40 psi and worked from there. It is not unusual for the gauge to shut off at around 30 psi to 40 psi when you shut engine off. When you then do the KOEO, it should drop close to zero and then of course show actual pressure when start the engine. Is also likely that the other stepper motors will start to malfunction. You can use a live data scanner and measure voltage that will equate to oil pressure. I bet yours is off. I would contact Digital Dash Solutions and look at the site and you can customize the look if you want and even add a transmission temp gauge that is just plug and play.  I am going to supply a link for them and an oil pressure voltage pic to compare with.[URL unfurl="true"]https://www.fixmygauges.com/[/URL][ATTACH=full]2353[/ATTACH]</blockquote>