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GMC Truck
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1991
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Safari Van M V6-262 4.3L VIN Z TBI
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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 46
DTC 46
4WAL Codes 41 To 54 (Control Valves).:
Codes 41 To 66 & 71 To 74 (4WAL Control Unit*).:
