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Home >> GMC >> 2024 >> Acadia AT4 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel, Displays And Gauges >> Diagnostic Information and Procedures >> DTC B1CA3: >> Circuit / System Description

Circuit / System Description

The A11 Radio interfaces with the X20 Card Reader Receptacle using a USB cable. The A11 Radio monitors the USB for faults.

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