Operation CHARM
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GMC Truck
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1987
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Suburban 1/2 Ton 4WD V8-454 7.4L
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Tune-up and Engine Performance Checks
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Fuel Pressure
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Specifications
Fuel Pressure: Specifications
Fuel Pressure
27.5-44.8 kPa (4 -6.5 psi)