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Home >> Chevrolet >> 2014 >> Tahoe LT, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U1879: Drive Motor Control Module B Lost Communication With Engine Control Module (ECM) >> Circuit/System Verification
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Circuit/System Verification

With a scan tool, ensure the following DTCs are not present in the modules as follows:

BCM

U1814

SDGM

U0100

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