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Circuit/System Verification

WARNING: This page is about a different car, the 2014 Chevrolet SS. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Contact the OnStar® Call Center first before pressing the emergency button in order to notify them of the test.

  1. Ignition ON.
  2. Verify the buttons operate normally by pressing each button individually.
    • If none of the buttons operate normally 

      Refer to Circuit/System Testing (below).

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

      Test or replace the A10 inside rearview mirror.

    • If all of the buttons operate normally 
  3. All OK.
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