AutoCodes – GMC – B0039 GMC

B0039 GMC Code - Second Row Right Frontal Stage 1 Deployment Control

Quick Answer

When the ignition switch is turned to RUN position, Sensing and Diagnostic Module (SDM) performs tests to diagnose critical internal malfunctions. Common causes include Faulty Second Row Right Frontal Air Bag, Second Row Right Frontal Air Bag harness is open or shorted, Second Row Right Frontal 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: B0039 GMC indicates Second Row Right Frontal Stage 1 Deployment Control.
Common causes: Common causes include Faulty Second Row Right Frontal Air Bag, Second Row Right Frontal Air Bag harness is open or shorted, Second Row Right Frontal 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 1,512

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0039 GMC Description

When the ignition switch is turned to RUN position, Sensing and Diagnostic Module (SDM) performs tests to diagnose critical internal malfunctions. SDM then performs deployment loop voltage out of range test and deployment loop resistance measurement test. If voltage out of range test detects a short to voltage condition, the resistance measurement test will not be performed.

OBDII Code B0039 GMC - Second Row Right Frontal Stage 1 Deployment Control - AutoCodes.com — B0039 GMC Code - Second Row Right Frontal Stage 1 Deployment Control

What does this mean?

What are the Possible Causes of the DTC B0039 GMC?

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

How to Fix the DTC B0039 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0039 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.

Need more information about the B0039 GMC code?

Need more information on how to fix the B0039 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0039 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 B0039 GMC Code

1. What are the common symptoms of OBDII code B0039 GMC?

The common symptoms of OBDII code B0039 GMC, titled Second Row Right Frontal Stage 1 Deployment Control, include the airbag warning light illuminating on the dashboard and potential non-deployment of the airbag in the event of a crash.

2. What usually causes OBDII code B0039 GMC to trigger?

OBDII code B0039 GMC is typically triggered due to a fault in the Second Row Right Frontal Stage 1 Deployment Control circuit, which can be caused by issues such as faulty wiring, a malfunctioning airbag sensor, or a problem with the airbag control module.

3. How can I diagnose the cause of OBDII code B0039 GMC?

Diagnosing the cause of OBDII code B0039 GMC usually involves using a diagnostic scanner to retrieve the specific fault code, inspecting the wiring and connectors related to the Second Row Right Frontal Stage 1 Deployment Control circuit, and performing tests on the airbag system components.

4. Is it safe to drive with OBDII code B0039 GMC active?

It is not recommended to drive with OBDII code B0039 GMC active, as it indicates a potential issue with the airbag system, which is a critical safety component in the event of a collision. It is important to address the problem promptly to ensure the airbag functions as intended.

5. Can I reset OBDII code B0039 GMC without repairing the underlying issue?

While you can reset OBDII code B0039 GMC using a diagnostic scanner, it is crucial to address the underlying issue causing the fault code to prevent the airbag system from malfunctioning and potentially putting your safety at risk.

6. What are some common repair tips for fixing OBDII code B0039 GMC?

Common repair tips for OBDII code B0039 GMC include checking and repairing any damaged wiring, replacing faulty airbag sensors or components, and ensuring all connections are secure and free of corrosion.

7. How much does it typically cost to repair OBDII code B0039 GMC?

The cost of repairing OBDII code B0039 GMC can vary depending on the specific cause of the issue, the extent of the repairs needed, and labor rates in your area. It is advisable to consult with a qualified mechanic or dealership for an accurate estimate.

8. Can a DIY enthusiast fix OBDII code B0039 GMC at home?

While some DIY enthusiasts may have the skills and tools to diagnose and repair OBDII code B0039 GMC at home, working on the airbag system requires caution and expertise due to safety concerns. It is recommended to seek professional help for this type of repair.

9. Are there any recalls or technical service bulletins related to OBDII code B0039 GMC?

Recalls and technical service bulletins related to OBDII code B0039 GMC may vary by model year and specific vehicle. It is advisable to check with the manufacturer or authorized service center to see if there are any relevant recalls or bulletins for your vehicle.

10. How can I prevent OBDII code B0039 GMC from occurring in the future?

To prevent OBDII code B0039 GMC from occurring in the future, it is essential to perform regular maintenance on your vehicle, including checking the airbag system for any signs of wear or damage, and addressing any issues promptly to ensure proper functionality.