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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Data Communications - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC U0074: Control Module Communication Powertrain Expansion CAN Bus (Powertrain Expansion Bus with HP6) >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Powertrain High Speed GMLAN Serial Data (+) U0074 U0074 U0074 -
Powertrain High Speed GMLAN Serial Data (-) U0074 U0074 U0074 -
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