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Circuit/System Verification

WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition On/vehicle in Service Mode.
  2. Verify that each button on the A22 radio controls operates normally by pressing each button individually.
    • If none of the buttons operate normally 

      Refer to Circuit/System Testing 

    • If some, but not all, of the buttons operate normally 

      Test or replace the A22 radio controls

    • Go to next step: If all of the buttons operate normally 
  3. All OK
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