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Home >> Chevrolet >> 2017 >> Spark LS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (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 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify DTC B1020 is not set.
    • If DTC B1020 is set 

      Replace the A22 Radio Controls.

    • Go to next step: If DTC B1020 is not set 
  3. All OK.
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