AutoCodesGMC – B0059 GMC

B0059 GMC Code - Right Front/Passenger Pretensioner Deployment Loop Voltage Out of Range

Quick Answer

The passenger seat belt pretensioner deployment loop consists of a seat belt pretensioner - RF and the seat belt pretensioner - RF high and low circuits. Common causes include Faulty Right Front/Passenger Pretensioner, Right Front/Passenger Pretensioner harness is open or shorted, Right Front/Passenger Pretensioner 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
B0059 GMC indicates Right Front/Passenger Pretensioner Deployment Loop Voltage Out of Range.
Common causes
Common causes include Faulty Right Front/Passenger Pretensioner, Right Front/Passenger Pretensioner harness is open or shorted, Right Front/Passenger Pretensioner 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 1,230
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code B0059 GMC Description

The passenger seat belt pretensioner deployment loop consists of a seat belt pretensioner - RF and the seat belt pretensioner - RF high and low circuits. A shorting bar used within the seat belt pretensioner connector shorts together both the seat belt pretensioner high and low circuits when the connector is disconnected. This will help to prevent unwanted deployment of the pretensioner during servicing. During a 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 seat belt pretensioner. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in memory.
OBDII Code B0059 GMC - Right Front/Passenger Pretensioner Deployment Loop Voltage Out of Range - AutoCodes.com
B0059 GMC Code - Right Front/Passenger Pretensioner Deployment Loop Voltage Out of Range

What are the Possible Causes of the DTC B0059 GMC?

  • Faulty Right Front/Passenger Pretensioner
  • Right Front/Passenger Pretensioner harness is open or shorted
  • Right Front/Passenger Pretensioner circuit poor electrical connection
  • Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0059 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 B0059 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 B0059 GMC code?

Need more information on how to fix the B0059 GMC code? Get Access to Factory Service Manuals

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Get the B0059 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 B0059 GMC Code

1. What are the common symptoms of OBDII code B0059 in a GMC vehicle?

- Common symptoms include an illuminated airbag warning light on the dashboard, as well as potential issues with the right front/passenger seatbelt pretensioner.

2. What does the OBDII code B0059 GMC indicate?

- The code B0059 indicates that the voltage in the right front/passenger pretensioner deployment loop is out of the expected range.

3. What are possible causes of OBDII code B0059 in a GMC vehicle?

- Possible causes include a faulty pretensioner, damaged wiring or connectors in the deployment loop, or issues with the airbag control module.

4. How can I diagnose the OBDII code B0059 in my GMC vehicle?

- Diagnosis typically involves using a scan tool to retrieve the specific trouble code, followed by inspecting the wiring, connectors, and components in the right front/passenger pretensioner system.

5. Can I still drive my GMC vehicle with OBDII code B0059?

- It is not recommended to drive the vehicle with an active airbag-related fault code, as it may affect the proper deployment of the airbag system in the event of a collision.

6. Is it safe to reset the OBDII code B0059 in a GMC vehicle?

- While resetting the code may temporarily turn off the warning light, it is crucial to address the underlying issue causing the fault code to ensure the airbag system functions correctly.

7. How can I repair OBDII code B0059 in my GMC vehicle?

- Repairing the code may involve replacing the right front/passenger seatbelt pretensioner, repairing or replacing damaged wiring or connectors, or reprogramming the airbag control module.

8. Will OBDII code B0059 cause the airbags to deploy unintentionally?

- OBDII code B0059 itself will not cause the airbags to deploy unintentionally, but it indicates a potential issue with the deployment loop that may affect the airbag system's proper operation.

9. Can I fix OBDII code B0059 in my GMC vehicle myself?

- While some DIY enthusiasts may attempt to diagnose and repair the issue, working on the airbag system requires proper knowledge and tools. It is recommended to seek professional assistance for safety reasons.

10. How much does it typically cost to repair OBDII code B0059 in a GMC vehicle?

- The cost of repairing OBDII code B0059 can vary depending on the specific cause of the issue, the parts needed for replacement, and labor costs. It is advisable to get a quote from a qualified mechanic or dealership.

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