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2500 HD Power Wagon
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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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P1593-2A - Speed Control Switch Signals - Stuck
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Set Condition
Set Condition
The Bus message from the Steering Column Control Module (SCCM) indicates that the Speed Control Switch has been pressed for 120 seconds or more.