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Old 05-03-2013, 09:47 PM   #2
GMtrucknut!!
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Join Date: Dec 2011
Location: Attica,indiana
Posts: 264
Re: oil pressure light on-question

Yes definitely do that and before you check it with a mechanical gauge crank it over to be sure no sludge has plugged the passage to the sending unit which will give a false reading.
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