AutoCodes – GMC – B0023 GMC

B0023 GMC Code - Right Roof Rail Air Bag Deployment Loop

Quick Answer

During a side or frontal crash of sufficient force the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop in order to deploy the right roof rail air bag. Common causes include Faulty Right Roof Rail Air Bag, Right Roof Rail Air Bag harness is open or shorted, Right Roof Rail Air Bag circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B0023 GMC indicates Right Roof Rail Air Bag Deployment Loop.
Common causes: Common causes include Faulty Right Roof Rail Air Bag, Right Roof Rail Air Bag harness is open or shorted, Right Roof Rail Air Bag circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 7,163

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 05, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0023 GMC Description

During a side or frontal crash of sufficient force the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop in order to deploy the right roof rail air bag. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. A shorting bar is used within the right roof rail air bag connector which will short together both high and low circuits when the connector is disconnected. This will help to prevent unwanted deployment of the air bag during servicing.

OBDII Code B0023 GMC - Right Roof Rail Air Bag Deployment Loop - AutoCodes.com — B0023 GMC Code - Right Roof Rail Air Bag Deployment Loop

What does this mean?

What are the Possible Causes of the DTC B0023 GMC?

Faulty Right Roof Rail Air Bag
Right Roof Rail Air Bag harness is open or shorted
Right Roof Rail Air Bag circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0023 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

DTC B0023 01: Right Roof Rail Air Bag Deployment Loop Short to Battery
DTC B0023 02: Right Roof Rail Air Bag Deployment Loop Short to Ground
DTC B0023 04: Right Roof Rail Air Bag Deployment Loop Open Circuit
DTC B0023 0D: Right Roof Rail Air Bag Deployment Loop Resistance Above Threshold
DTC B0023 0E: Right Roof Rail Air Bag Deployment Loop Resistance Below Threshold

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0023 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Get the B0023 GMC code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0023 GMC Code

1. What are the common symptoms of OBDII code B0023 GMC?

The common symptoms of code B0023 GMC include the airbag warning light illuminating on the dashboard, potential non-deployment of the right roof rail airbag in the event of a crash, and possible diagnostic trouble codes (DTCs) related to the airbag system.

2. What causes OBDII code B0023 GMC to trigger?

Code B0023 GMC is typically triggered when there is a malfunction in the right roof rail airbag deployment loop circuit. This could be due to issues such as a faulty airbag sensor, damaged wiring, or a problem with the airbag control module.

3. How can I diagnose the cause of OBDII code B0023 GMC?

Diagnosing code B0023 GMC involves using a diagnostic scanner to retrieve the specific DTCs related to the right roof rail airbag system. Additionally, thorough visual inspection of the wiring, connectors, and airbag components may help pinpoint the cause of the issue.

4. Is it safe to drive with OBDII code B0023 GMC present?

It is not recommended to drive with code B0023 GMC present, as it indicates a potential problem with the right roof rail airbag system. In the event of a crash, the airbag may not deploy properly, compromising the safety of the vehicle occupants.

5. What are some repair tips for fixing OBDII code B0023 GMC?

Repairing code B0023 GMC may involve repairing or replacing damaged wiring, replacing a faulty airbag sensor, or reprogramming the airbag control module. It is important to follow manufacturer-specific repair procedures and safety precautions when working on the airbag system.

6. Can I reset OBDII code B0023 GMC without fixing the underlying issue?

Resetting the code without addressing the underlying issue will not solve the problem. The code will likely reappear once the system detects the same fault. It is important to diagnose and repair the root cause of code B0023 GMC to ensure the airbag system functions correctly.

7. How much does it cost to repair OBDII code B0023 GMC?

The cost of repairing code B0023 GMC can vary depending on the specific cause of the issue, labor rates, and the cost of any replacement parts needed. It is recommended to consult with a professional mechanic or dealership for an accurate estimate.

8. Are there any recalls or technical service bulletins related to OBDII code B0023 GMC?

It is advisable to check with the vehicle manufacturer or a dealership to see if there are any recalls or technical service bulletins related to code B0023 GMC for your specific vehicle make and model. Recalls or bulletins may provide guidance on addressing the issue.

9. Can a DIY enthusiast fix OBDII code B0023 GMC at home?

While some DIY enthusiasts may have the skills to diagnose and repair issues related to code B0023 GMC, working on the airbag system can be complex and dangerous. It is recommended to exercise caution and consider seeking professional help to ensure the airbag system is repaired correctly and safely.

10. How can I prevent OBDII code B0023 GMC from occurring in the future?

Regular maintenance and inspections of the airbag system, including checking for loose connections, damaged wiring, and proper sensor functionality, can help prevent code B0023 GMC from occurring. Following manufacturer-recommended service schedules and addressing any airbag system issues promptly can also help maintain system integrity.