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GMC
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2014
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Sierra 2500 HD SLT, 6.6L Eng VIN 8, RWD
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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
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Diagnostic Information and Procedures
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DTC U1886: Battery Energy Control Module Lost Communication With Engine Control Module (ECM)/Powertrain Control Module (PCM)
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Action Taken When the DTC Sets
Action Taken When the DTC Sets
The modules is never signaled, therefore the specific subsystems will not function.