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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Data Communication System - Diagnostic Information And Procedures (U183A To U3012) And Symptoms >> Diagnostic Information And Procedures >> DTC U3012: Control Module Improper Wake-Up Perfomance >> Circuit/System Description

Circuit/System Description

The internal fault detection is handled inside the device. The symptom byte information is for engineering reference only. No external circuit diagnosis is involved.

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