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B0021

Code meaning and manufacturer information

B0021

What does this code mean?

The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.

A code identifies a detected condition, not a part that must automatically be replaced.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer communications

11

Original wording in English

23-NA-110

CADILLAC

Reported code forms B0021

This technical bulletin provides a procedure to correct the condition of Intermittent Service Airbag System message (DTC B0014 B0021).

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23-NA-030

CHEVROLET

Reported code forms B0021

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…

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23-NA-030

CHEVROLET

Reported code forms B0021

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…

Read communication ↗

23-NA-030

CHEVROLET

Reported code forms B0021

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…

Read communication ↗

23-NA-030

CHEVROLET

Reported code forms B0021

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…

Read communication ↗

23010

CHEVROLET

Reported code forms B0021

23010 - SERVICE UPDATE. SOME VEHICLES MAY HAVE BEEN PRODUCED WITH A WELD IN THE SEAT BACK FRAME THAT CREATES A SHARP EDGE THAT CAN DAMAGE THE SEAT SIDE AIRBAG WIRING. THESE VEHICLES MAY EXPERIENCE A LOSS OF CONTINUITY…

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Check vehicle applicability

27

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
BuickENCLAVE2008
CadillacXT42023
CadillacXT42022
CadillacXT42021
CadillacXT42020
CadillacXT42019
ChevroletBOLT EUV2023
ChevroletBOLT EUV2022
ChevroletBOLT EV2023
ChevroletBOLT EV2022
ChevroletCAMARO2016
ChevroletIMPALA2010
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Before replacing a part

Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.

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Can I keep driving?

A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.