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Home >> GMC >> 2024 >> Sierra 2500 HD Denali Ultimate >> Repair and Diagnosis >> Steering >> Power Steering System >> Diagnostic Information and Procedures >> DTC C158C >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, engine running.
  2. Verify that the hydraulic power steering system is functioning properly.
    • Go to next step: If the hydraulic power steering system is functioning properly 
  3. Refer to Circuit/System Testing.