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Home >> Chevrolet >> 2014 >> SS >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Cellular System, Entertainment System And Navigation System >> Diagnostic Information and Procedures >> DTC B1020: Auxiliary Electronic Control Unit >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC B1020 is not set.
    • If DTC B1020 is set 

      Replace the A20 Radio/HVAC Controls.

    • If DTC B1020 is not set 
  3. All OK.
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