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GMC Truck
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1999
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C 1500 Truck 2WD V8-305 5.0L VIN M SFI
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Repair and Diagnosis
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Powertrain Management
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Information Bus
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Failed Last Test
Failed Last Test
For type A and B DTCs, this message will display during the subsequent ignition cycles until the test passes or the DTCs are cleared. For type C DTCs, this message clears whenever the ignition is cycled.