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Home › Cadillac › 2017 › XT5 Base › Repair and Diagnosis › Engine Performance › System › Data Communication System - Diagnostic Information And Procedures › Diagnostic Information and Procedures › DTC U18AA: Transmission Range Control Module Lost Communication with Engine Control Module › Action Taken When the DTC Sets

Action Taken When the DTC Sets

The device is never signaled. Therefore, the specific subsystems will not function.

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