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Circuit/System Testing

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that the connector at the B137 Power Steering Shaft Torque Sensor is not damaged or have water intrusion/corrosion.
    • The B137 Power Steering Shaft Torque Sensor connector is not OK 

      Replace the steering gear.

    • Go to next step: The B137 Power Steering Shaft Torque Sensor connector is OK 
  2. With a scan tool perform the Power Steering Control Module Calibration procedure Steering Angle Sensor Centering and Software Endstop Learning. Refer to Power Steering Control Module Calibration .
  3. Verify that DTC C047A does not set.
    • If the DTC does set

      Replace the K43 Power Steering Control Module.

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