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Home >> GMC >> 2010 >> Terrain SLT, 2.4 W, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U2099 >> Circuit/System Description

Circuit/System Description

The body control module (BCM) activates the serial data communication enable circuit, when the ignition key is in ACC, ON or START. The serial data communication enable circuit wakes up the modules for serial data buss communication.

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