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Home >> Chevrolet >> 2021 >> Camaro LS, Automatic Trans >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> DTC B1021 >> Circuit/System Description

Circuit/System Description

Within the telematic vehicle localization and immobilization control module, a SIM card is used to specifically identify the vehicle and communicate via cellular radio.