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Engine-Codes – GMC – B3155 2015 GMC Sierra

B3155 2015 GMC Sierra Code - Passenger Door Lock Switch Circuit

Quick Answer

The B3155 diagnostic code for a 2015 GMC Sierra refers to an issue with the passenger door lock switch circuit. Common causes include Faulty passenger door lock switch, Wiring issues in the door lock circuit, Malfunctioning door lock actuator. 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
B3155 2015 GMC Sierra indicates Passenger Door Lock Switch Circuit.
Common causes
Common causes include Faulty passenger door lock switch, Wiring issues in the door lock circuit, Malfunctioning door lock actuator.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B3155 2015 GMC Sierra Description

The B3155 diagnostic code for a 2015 GMC Sierra refers to an issue with the passenger door lock switch circuit. This code indicates that there is a malfunction or problem with the circuit that controls the locking mechanism in the passenger door. The door lock switch circuit is responsible for sending signals to the door lock actuator to lock or unlock the door.

OBDII Code B3155 2015 GMC Sierra - Passenger Door Lock Switch Circuit
B3155 2015 GMC Sierra Code - Passenger Door Lock Switch Circuit

Common Causes of B3155 2015 GMC Sierra

  1. Faulty passenger door lock switch.
  2. Wiring issues in the door lock circuit.
  3. Malfunctioning door lock actuator.
  4. Problem with the body control module.
  5. Water damage or corrosion in the door lock system components.

Symptoms of B3155 2015 GMC Sierra

  1. Passenger door not locking or unlocking properly.
  2. Inability to control the passenger door lock from the inside of the vehicle.
  3. Unusual sounds coming from the passenger door when attempting to lock or unlock it.
  4. Dashboard warning light indicating a door lock system malfunction.

How to Fix B3155 2015 GMC Sierra

  1. Diagnose the issue by using a scan tool to retrieve the specific fault code from the vehicle's computer system.
  2. Inspect the passenger door lock switch, wiring, and actuator for any visible signs of damage or corrosion.
  3. Test the door lock switch and actuator for proper functionality.
  4. Replace any faulty components such as the door lock switch, actuator, or wiring harness.
  5. Clear the fault code from the vehicle's computer system and test the door lock system to ensure proper operation.

Cost to Fix B3155 2015 GMC Sierra

The typical repair cost for a passenger door lock switch circuit issue can range from $100 to $300, depending on the extent of the problem and the cost of replacement parts. This estimate includes parts and labor. However, actual costs may vary based on factors such as location, vehicle make and model, and the specific diagnosis time and labor rates at auto repair shops. It is recommended to obtain quotes from local auto repair shops for a more accurate estimate.

What does this mean?

Tech Notes for B3155 2015 GMC Sierra









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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 B3155 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B3155 on a 2015 GMC Sierra related to the passenger door lock switch circuit?

- Common symptoms include the passenger door lock not functioning properly, inability to lock or unlock the door using the switch, and warning lights on the dashboard.

2. What are the possible causes of OBDII code B3155 on a 2015 GMC Sierra?

- Possible causes include a faulty passenger door lock switch, damaged wiring or connectors in the circuit, a malfunctioning door lock actuator, or issues with the body control module.

3. How can I diagnose the issue causing OBDII code B3155 on my 2015 GMC Sierra?

- To diagnose the problem, you can start by checking the wiring and connectors for any visible damage, testing the passenger door lock switch for proper functionality, and using a diagnostic scanner to gather more specific information about the circuit.

4. Is it safe to continue driving my 2015 GMC Sierra with OBDII code B3155 related to the passenger door lock switch circuit?

- It is not recommended to drive the vehicle with this code as it can affect the security and safety of the vehicle. It is best to address the issue promptly to prevent any potential problems.

5. Can I repair OBDII code B3155 on my 2015 GMC Sierra myself, or do I need to take it to a professional mechanic?

- Depending on your experience and knowledge of automotive repairs, you may be able to address the issue yourself by checking the switch, wiring, and connectors. However, if you are unsure or if the problem seems complex, it is advisable to seek the help of a professional mechanic.

6. Are there any common fixes or repair tips for resolving OBDII code B3155 on a 2015 GMC Sierra?

- Common fixes may include replacing the passenger door lock switch, repairing damaged wiring or connectors, recalibrating the door lock system, or resetting the body control module.

7. How much can I expect to pay to repair OBDII code B3155 on my 2015 GMC Sierra at a dealership or auto repair shop?

- The cost of repair can vary depending on the specific issue causing the code and the labor rates of the dealership or auto repair shop. It is recommended to get a diagnostic and repair estimate before proceeding with the repairs.

8. Can OBDII code B3155 on a 2015 GMC Sierra be related to other electrical issues in the vehicle?

- Yes, since the code is related to the passenger door lock switch circuit, it can be interconnected with other electrical systems in the vehicle. It is important to address the code promptly to prevent any further electrical problems.

9. Will resetting the OBDII code B3155 on my 2015 GMC Sierra make the issue go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to reoccur. It is essential to diagnose and repair the root cause of the problem for a permanent solution.

10. How can I prevent OBDII code B3155 from appearing on my 2015 GMC Sierra in the future?

- To prevent the code from reoccurring, regular maintenance of the door lock system, checking for any signs of wear or damage, and addressing any electrical issues promptly can help maintain the proper functionality of the passenger door lock switch circuit.

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