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GMC Truck
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1991
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G 3500 1 Ton Van V8-305 5.0L
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Manufacturer Code Charts
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DTC 14
DTC 14
Fig. 45 Codes 13, 14 & 15 Diagnosis (ECU Malfunction):
