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Home >> Chevrolet >> 2017 >> City Express LS >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information And Procedures >> DTC U12AA: Configuration Error >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC U12AA is not set.
    • If DTC U12AA is set 
    1. Program the A11 Radio.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the A11 Radio.
      • Go to next step: If the DTC does not set
    3. All OK.
    • Go to next step: If DTC U12AA is not set 
  3. All OK
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