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Home >> Chevrolet >> 2021 >> Traverse L >> Repair and Diagnosis >> Engine Performance >> System >> Data Communications - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> Scan Tool Does Not Communicate with Vehicle >> Circuit/System Description

Circuit/System Description

The K56 Serial Data Gateway Module is used to handle communications between multiple GMLAN busses and functions as a gateway to isolate the secure networks from the unsecured networks. When the K56 Serial Data Gateway Module is not communicating, the scan tool can not communicate with the vehicle.

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