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Home >> GMC >> 2021 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 195 (Suspension Controls System) >> Diagnostic Information and Procedures >> DTC C0720 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2021 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that no DTCs are present in the ECM.
    • Go to next step: If no DTCs are set 
  2. Replace the K19 Suspension Control Module and verify the DTC does not reset.
    • If the DTC sets 

      Replace the K20 Engine Control Module.

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