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Home › Cadillac › 2014 › Escalade Base, AWD › Repair and Diagnosis › Engine Performance › System › Data Communication System › Diagnostic Information and Procedures › DTC C126C, C126D, C12E3, or U180F: Control Module Communication Bus B › Circuit/System Testing

Circuit/System Testing

Verify that DTC U0074 is not set.

If the DTC is set, refer to DTC U0074