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Home >> Chevrolet >> 2017 >> City Express LS >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information And Procedures >> DTC U12AA: Configuration Error >> Circuit/System Description
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Circuit/System Description

The A11 Radio must be configured with specific software, serial numbers, or other information. If the A11 Radio was not properly configured after installation, it may set DTC U12AA. The symptom byte information is for engineering reference only. No external circuit diagnosis is involved.

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