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Home >> Chevrolet >> 2019 >> Traverse L >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Remote Functions System >> Diagnostic Information and Procedures >> DTC B3121 >> Circuit/System Description
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Circuit/System Description

The rear fascia antenna is located in the rear fascia assembly and is used to establish low frequency communications with the keyless entry transmitter. As a vehicle with locked doors is approached with a keyless entry transmitter and the exterior rear closure touch pad is pressed, the keyless entry control module communicates with the rear fascia keyless entry antenna.