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Circuit/System Testing

WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that DTC C0035, C0040, C0045, or C0050 are not set in the EBCM.
    • Go to next step: If none of the listed DTCs are set 
  2. Replace the K19 Suspension Control Module.
  3. Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
    • If the DTC sets 

      Replace the K17 Electronic Brake Control Module.

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