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Home >> Cadillac >> 2008 >> STS Base, 3.6 V, AWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brake System, Traction Control System & Stability Control System >> Diagnostic Information and Procedures >> DTC C0121 >> Circuit/System Testing

Circuit/System Testing

Clear the DTC. Cycle the ignition OFF and ON. Operate the vehicle. Verify that DTC C0121 does not reset.

If DTC C0121 resets, replace the EBCM.

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