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B0021 on the 2023 Chevrolet Bolt EUV

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

Bulletins for this model year that name B0021
23-NA-0302023-09-14. Service bulletin. This service bulletin provides a procedure to replace the seat pad to correct the condition of Airbag Light On - DTCs B0014 / B0021 SIAB Harness Connector Contacting Seat Back Foam (New Seat Back Foam), Intermittent Service Airbag System Message, DTCs B0014, B0021.
23-NA-0302023-06-05. Service bulletin. This service bulletin provides a procedure to replace the seat pad to correct the condition of Airbag Light On - DTCs B0014 / B0021 SIAB Harness Connector Contacting Seat Back Foam (New Seat Back Foam), Intermittent Service Airbag System Message, DTCs B0014, B0021.
23-NA-0302023-05-04. Service bulletin. This service bulletin provides a procedure to replace the seat pad to correct the condition of Airbag Light On - DTCs B0014 / B0021 SIAB Harness Connector Contacting Seat Back Foam (New Seat Back Foam), Intermittent Service Airbag System Message, DTCs B0014, B0021.
23-NA-0302023-03-08. Service bulletin. This service bulletin provides a procedure to replace the seat pad to correct the condition of Airbag Light On - DTCs B0014 / B0021 SIAB Harness Connector Contacting Seat Back Foam (New Seat Back Foam), Intermittent Service Airbag System Message, DTCs B0014, B0021.

4 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.