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GMC Truck
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1984
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Jimmy Full Size V8-379 6.2L DSL
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Repair and Diagnosis
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Powertrain Management
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Emission Control Systems
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Exhaust Gas Recirculation
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Exhaust Pressure Regulator Vacuum Valve
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Testing and Inspection
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EPR Vacuum Check
EPR Vacuum Check
Fig. 16 EPR vacuum check. 1984:
