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Home >> Chevrolet >> 2014 >> Express 1500 LS, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U0074: Control Module Powertrain Expansion Communication Bus >> Conditions for Setting the DTC
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Conditions for Setting the DTC

The control module setting the DTC has attempted to establish communications on the powertrain high speed GMLAN serial data circuits more than 3 times.