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2015
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Volt
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Repair and Diagnosis
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Engine Performance
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System
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Data Communication System - DTC B1000 To DTC U183E
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Diagnostic Information and Procedures
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DTC U0077: Control Module Communication Chassis Expansion
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Conditions for Running the DTC
Conditions for Running the DTC
Supply voltage to the devices are in the normal operating range.
The vehicle power mode requires serial data communications.