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Home >> GMC >> 2021 >> Terrain SL >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC C1211 >> Circuit/System Testing

Circuit/System Testing

  1. Verify that no other DTCs are set except for DTC C1211.
    • Go to next step: If only DTC C1211 is set 
  2. Replace the K17 Electronic Brake Control Module / K160 Brake System Control Module.
  3. Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
    • If DTC sets 

      Replace the K20 Engine Control Module.

    • Go to next step: If DTC does not set 
  4. All OK.
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