Operation CHARM
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GMC Truck
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1987
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V 3500 P/U 4WD V8-305 5.0L
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Repair and Diagnosis
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Powertrain Management
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Fuel Delivery and Air Induction
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Fuel Pressure
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Specifications
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Carbureted
Carbureted
Fuel Pressure
27.5 to 44.8 kPa (4 to 6.5 psi)
Fuel Pump Vacuum
50.6 kPa (15 inches Hg)