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Home >> Cadillac >> 2014 >> Escalade Premium, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U189A: DC to DC Converter Control Module A Lost Communication With Hybrid Powertrain Control Module >> Action Taken When the DTC Sets
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Action Taken When the DTC Sets

The modules is never signaled, therefore the specific subsystems may not function. Depending on the fault, the MIL, battery indicator may illuminate and several DIC messages be present.