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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 990 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U0073 or U2100 >> Circuit/System Description
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Circuit/System Description

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The serial data circuits are serial data buses are used to communicate information between the control modules. The serial data circuits also connect directly to the data link connector (DLC).

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