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2006 chevrolet silverado oil presure guage goes directly to 80 when switch is turn on and motor is running.

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The oil pressure switch is grounded. You will need to replace the oil pressure switch.

Posted on Mar 11, 2009

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I have a 2005 Silverado 5.3 L, the oil pressure gauge is pegged. When the engine is not running is goes back to 80.


i want you to do this , UN connect the oil pressure switch and let me know if this way can fix your gauge problem .

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You may have a bad temperature sensor or switch, there can be up to 3. One goes to your guage, it tells the guage what to read. One goes to your computer and tells the computer how hot the motor is. And one goes to the fan and tells the fan when to turn on and off. You also have a fan relay that could be stuck on, but I'm not sure if that would effect the guage.

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