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Home >> Chevrolet >> 2018 >> Traverse L >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Cellular, Entertainment, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1021 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2019 Chevrolet Traverse. However, it is still accessible from the selected car via links, so may be relevant.

This code shall set as current when the SIM card number programmed into the telematics communication interface control module does not match the SIM card.

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