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Chevrolet
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2007
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Impala LTZ
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls And Fuel - 3.9L - DTC P0420 To DTC P3433
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DTC P0650
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Circuit/System Verification
Circuit/System Verification
Ignition ON, the MIL should turn ON and OFF when commanded with a scan tool.