Engine-CodesGMC – B0079 2015 GMC Sierra

B0079 2015 GMC Sierra Code - Driver Seat Position Sensor Circuit

Quick Answer

The B0079 code on a 2015 GMC Sierra indicates an issue with the driver seat position sensor circuit. Common causes include Faulty driver seat position sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to the sensor or wiring. 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
B0079 2015 GMC Sierra indicates Driver Seat Position Sensor Circuit.
Common causes
Common causes include Faulty driver seat position sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to the sensor or wiring.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code B0079 2015 GMC Sierra Description

The B0079 code on a 2015 GMC Sierra indicates an issue with the driver seat position sensor circuit. This sensor is responsible for detecting the position of the driver's seat and ensuring that it is in the correct location for optimal safety and comfort. When this sensor malfunctions, it can lead to various issues that affect the vehicle's performance and safety.

OBDII Code B0079 2015 GMC Sierra - Driver Seat Position Sensor Circuit
B0079 2015 GMC Sierra Code - Driver Seat Position Sensor Circuit

Common Causes of B0079 2015 GMC Sierra

  1. Faulty driver seat position sensor
  2. Wiring or connector issues in the sensor circuit
  3. Corrosion or damage to the sensor or wiring
  4. Impact or damage to the driver's seat
  5. Electrical issues within the vehicle's system

Symptoms of B0079 2015 GMC Sierra

  1. Airbag warning light illuminated on the dashboard
  2. Seat belt warning light stays on
  3. Inconsistent or erratic movement of the driver's seat
  4. Failure of the seat memory function
  5. Unusual noises coming from under the driver's seat

How to Fix B0079 2015 GMC Sierra

  1. Begin by disconnecting the vehicle's battery to prevent any electrical issues.
  2. Locate the driver seat position sensor under the driver's seat.
  3. Inspect the sensor, wiring, and connectors for any signs of damage or corrosion.
  4. Replace the sensor if it is faulty, and repair or replace any damaged wiring or connectors.
  5. Reconnect the battery and clear the diagnostic trouble code to reset the system.

Cost to Fix B0079 2015 GMC Sierra

The cost of repairing the driver seat position sensor circuit can vary depending on the extent of the issue and the specific parts needed for the repair. In general, the cost of replacing the sensor and addressing any wiring or connector issues can range from $200 to $500, including parts and labor. However, it is advisable to consult with a professional mechanic or dealership for a more accurate estimate, as labor rates and part prices can vary based on location and vehicle make and model.

Tech Notes for B0079 2015 GMC Sierra

B0079:01 Driver Seat Position Sensor Circuit Short to Battery

B0079:02 Driver Seat Position Sensor Circuit Short to Ground

B0079:04 Driver Seat Position Sensor Circuit Open

B0079:05 Driver Seat Position Sensor Circuit High Voltage or Open

B0079:06 Driver Seat Position Sensor Circuit Low Voltage or Open

B0079:08 Driver Seat Position Sensor Circuit Performance-Signal Invalid

B0079:0C Driver Seat Position Sensor Circuit Low Current

Need more information about the B0079 2015 GMC Sierra code?

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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 B0079 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B0079 in a 2015 GMC Sierra related to the Driver Seat Position Sensor Circuit?

The common symptoms include the airbag warning light illuminating on the dashboard, an error message indicating an issue with the driver seat position sensor, and potential loss of functionality of certain safety features.

2. What are the possible causes of OBDII code B0079 in a 2015 GMC Sierra?

The code B0079 in a 2015 GMC Sierra usually indicates a fault in the driver seat position sensor circuit. Common causes include a faulty seat position sensor, damaged wiring or connectors, or a malfunction in the airbag control module.

3. How can I diagnose the OBDII code B0079 in a 2015 GMC Sierra?

Diagnosing OBDII code B0079 involves using a scan tool to retrieve the specific codes, inspecting the wiring and connectors related to the driver seat position sensor, and testing the sensor itself for proper functionality.

4. Can I continue driving my 2015 GMC Sierra with the OBDII code B0079 present?

It is not recommended to continue driving the vehicle with the B0079 code present, as it indicates a potential issue with the driver seat position sensor circuit, which could affect the proper deployment of the airbags in case of an accident.

5. How can I repair the OBDII code B0079 in a 2015 GMC Sierra related to the Driver Seat Position Sensor Circuit?

Repairing the B0079 code may involve replacing the faulty driver seat position sensor, repairing damaged wiring or connectors, or resetting the airbag control module after addressing the underlying issue.

6. Are there any safety concerns associated with the OBDII code B0079 in a 2015 GMC Sierra?

Yes, there are safety concerns associated with the B0079 code, as it may impact the functionality of the airbag system, compromising the vehicle's occupant protection in the event of a collision.

7. How much does it typically cost to repair the OBDII code B0079 in a 2015 GMC Sierra at a dealership or repair shop?

The cost of repairing the B0079 code can vary depending on the exact cause of the issue, but it may range from $200 to $500 at a dealership or repair shop, including parts and labor.

8. Can I reset the OBDII code B0079 in a 2015 GMC Sierra by disconnecting the battery?

While disconnecting the battery may temporarily clear the code, it is not a recommended method for resolving the underlying issue causing the B0079 code. It's best to diagnose and repair the problem to ensure the safety systems function correctly.

9. Is the OBDII code B0079 specific to the 2015 GMC Sierra, or can it occur in other vehicle models?

The OBDII code B0079 related to the Driver Seat Position Sensor Circuit is specific to certain GMC Sierra models, but similar issues with seat position sensors can occur in other vehicles as well.

10. How long does it take to repair the OBDII code B0079 in a 2015 GMC Sierra?

The repair time for the B0079 code can vary depending on the exact cause of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the problem.

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