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Home >> Chevrolet >> 2017 >> Suburban LS, 4WD, Gas/Ethanol >> Repair and Diagnosis >> Steering >> Power Steering System >> Diagnostic Information and Procedures >> DTC C056D: Electronic Control Unit Hardware (Power Steering Control Module) >> Circuit/System Verification
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC C056D is not set.
    • If DTC C056D is set 
      NOTE:

      Check for faulty connections or corrosion at the K43 Power Steering Control Module harness and engine wiring harness before replacing the K43 Power Steering Control Module.

      Replace the K43 Power Steering Control Module.

    • If DTC C056D is not set 
  3. All OK
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