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GMC
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2003
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Jimmy 4D Utility, 4WD, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics - 4.3L
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System Tests
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Malfunction Indicator Light Always On
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Test Description
Test Description
The number below refers to the step number in the diagnostic procedures.
2 -
This step determines if the condition is with the MIL control circuit or the PCM.