DTC Descriptors
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- DTC B3120
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Keyless Entry Antenna 2 Short to Ground
- DTC B3120
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Keyless Entry Antenna 2 High Voltage/Open
For symptom byte information, refer to Symptom Byte List .