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Chevrolet
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2003
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Impala Base, 3.4 E
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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 - 3.4L
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System Tests
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Mil Always On
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Test Description
Test Description
The number below refers to the step number in the diagnostic procedure.
2
- This step determines if the condition is with the MIL control circuit or the PCM.