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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Power Steering System >> Diagnostic Information And Procedures >> DTC C056D: Electronic Control Unit Hardware (Power Steering Control Module) >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition - On/Vehicle - In Service Mode
  2. Verify DTC C056D is not set.
    • If the DTC is set 
    1. Perform all necessary programming and setup procedures for the control module: K43 Power Steering Control Module
    2. Verify the DTC does not set.
      • If the DTC sets - Replace the component: K43 Power Steering Control Module
      • If the DTC is not set
    3. All OK.
    • Go to next step: If the DTC is not set 
  3. All OK.
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