Mike's Workshop Manuals
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Chevrolet
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2007
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Impala Police
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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 P0010 To DTC P0353
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DTC P0068 or P0121
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Circuit/System Verification
Circuit/System Verification
With the ignition ON, observe the DTCs with the scan tool.
If other DTCs are set, diagnose them first. Refer to
Diagnostic Trouble Code (DTC) List - Vehicle
.