Question about GMC W3500 Pressure unit. oil. sensor,engine oil press. sensor. oil

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My check engine light is on code P0523

2009 Pontiac G8

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Check all your connections first. you really need to make sure they're good. this issue is not for a rookie because it can come down to a defective PCM... But if you are willing to try and fix it right then
http://www.gmforum.com/obd-ii-trouble-shooting-153/p0523-286000/

be very careful and make sure you have the proper tools and wiring diagram for this circuit !!!

Posted on Dec 28, 2013

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6ya6ya
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Posted on Jan 02, 2017

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