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Home >> Chevrolet >> 2014 >> Tahoe SSV >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U1817: Lost Communication With Hybrid Powertrain Control Module on Bus "B" >> Circuit/System Verification

Circuit/System Verification

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

HPCM

U189A

SDGM

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