Operation CHARM
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GMC Truck
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1989
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Suburban 1/2 Ton 2WD V8-454 7.4L
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Repair and Diagnosis
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Specifications
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Pressure, Vacuum and Temperature Specifications
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Engine Lubrication
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Engine Oil Pressure
Engine Oil Pressure
Normal Oil Pressure
40-60 at 2000 Pound Per Square Inch At RPM (psi @ rpm)