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GMC Truck
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1990
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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 11
DTC 11
Diagnostic Trouble Codes 1, 11 And 12 Electronic Control Unit Malfunction:
