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Home >> Chevrolet >> 2011 >> Chevy Express G2500, Van Cargo, 6.6 L >> Repair and Diagnosis >> Engine Performance >> System >> Data Communications System >> Diagnostic Information And Procedures >> DTC U0073 Or U2100 >> Circuit/System Description
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Circuit/System Description

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).