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Home >> Buick >> 2013 >> Regal GS, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U1901 >> Circuit/System Description

Circuit/System Description

The Radio interfaces only with the Info Display Module and the Info Display Module communicates with the Radio/HVAC Control through a Linear Interconnect Network (LIN) interface. The Info Display Module is responsible for passing information between the Radio and the Radio/HVAC Control.