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Circuit/System Verification

WARNING: This page is about a different car, the 2012 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, A11 radio ON.
  2. Verify that all radio controls operate and perform the correct function.
    • If some, but not all, controls operate normally. 

      Replace the A20 radio/HVAC controls.

    • If all controls are inoperative. 

      Refer to Circuit/System Testing below.

    • If all radio controls operate and perform the correct function. 
  3. All OK.
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