GMC C3500 Oil Pump

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1996 GMC C3500 Oil Pressure Dropping

1996 GMC C3500

I Have A 96 Gmc 1 Ton With A 454 Bbc. At Start Up, It Idles With Great Oil Pressure (about 60-70 Psi) And After 15-20 Minutes, The Oil...

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Asked by hitman2010

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