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GMC Truck
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1994
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K 2500 Suburban 4WD V8-454 7.4L
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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 51
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Powertrain Controls - ECM/PCM
Powertrain Controls - ECM/PCM
DTC 51 Chart: