Operation CHARM
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GMC Truck
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1989
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G 3500 1 Ton Van V8-350 5.7L
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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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Service and Repair
Fuel Delivery and Air Induction: Service and Repair
The TBI contains a constant bleed feature in the pressure regulator that relieves pressure. Removing fuel cap is the only pressure relief required.