Mike's Workshop Manuals
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2024
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2500 HD Power Wagon
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Repair and Diagnosis
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Steering
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Steering Control Systems
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(Steering Column Control Module (SCCM) - Electrical Diagnostics)
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DTC Troubleshooting
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P0579-00 - Upshift Downshift Switch Performance
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Set Condition
Set Condition
The Powertrain Control Module (PCM) determines that the Speed Control Switch S/C Signal 1 voltage is within the normal voltage range but is not a valid value for any of the switch positions.