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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1020 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2012 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Vehicle in Service Mode.
  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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