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B3155 2014 GMC Sierra Code - Passenger Door Lock Switch Circuit

Quick Answer

The B3155 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the passenger door lock switch circuit. Common causes include Faulty door lock switch, Wiring issues such as frayed or damaged wires, Loose or corroded electrical connections. 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 2014 GMC Sierra indicates Passenger Door Lock Switch Circuit.
Common causes
Common causes include Faulty door lock switch, Wiring issues such as frayed or damaged wires, Loose or corroded electrical connections.
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 17, 2024
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Code B3155 2014 GMC Sierra Description

The B3155 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the passenger door lock switch circuit. This code indicates that there is a malfunction in the circuit that controls the passenger door lock switch. The door lock switch is a crucial component that allows the driver or passengers to lock and unlock the doors of the vehicle. When this circuit is compromised, it can lead to issues with the functionality of the door lock system.

OBDII Code B3155 2014 GMC Sierra - Passenger Door Lock Switch Circuit
B3155 2014 GMC Sierra Code - Passenger Door Lock Switch Circuit

Common Causes of B3155 2014 GMC Sierra

  1. Faulty door lock switch.
  2. Wiring issues such as frayed or damaged wires.
  3. Loose or corroded electrical connections.
  4. Defective door lock actuator.
  5. Water damage or moisture intrusion affecting the circuit.

Symptoms of B3155 2014 GMC Sierra

  1. Inability to lock or unlock the passenger door using the switch.
  2. Intermittent operation of the door lock switch.
  3. Unusual clicking or buzzing noises when attempting to use the switch.
  4. Inconsistent response from the door lock system.
  5. Warning light on the dashboard indicating a door lock system malfunction.

How to Fix B3155 2014 GMC Sierra

  1. Diagnose the issue by using a scan tool to retrieve the DTC and inspecting the door lock switch and related components.
  2. Test the door lock switch for proper functionality and check the wiring for any damage or corrosion.
  3. Replace the faulty door lock switch or door lock actuator if necessary.
  4. Repair any damaged wiring or connections in the circuit.
  5. Clear the DTC from the vehicle's computer system and test the door lock system to ensure proper operation.

Cost to Fix B3155 2014 GMC Sierra

The cost of repairing a passenger door lock switch circuit issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $500. It's important to note that these are rough estimates, and actual costs may differ based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It's recommended to obtain quotes from local repair shops for a more accurate cost estimate.

What does this mean?

Tech Notes for B3155 2014 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 2014 GMC Sierra Code

1. What are common symptoms of OBDII code B3155 in a 2014 GMC Sierra related to the Passenger Door Lock Switch Circuit?

- Common symptoms include non-functional passenger door lock/unlock switch, inability to control the door locks from the passenger side, and potential issues with the central locking system.

2. What are possible causes of OBDII code B3155 in a 2014 GMC Sierra?

- Causes can include a faulty passenger door lock switch, damaged wiring or connectors in the circuit, a malfunctioning body control module (BCM), or issues with the door lock actuator.

3. How can I diagnose the Passenger Door Lock Switch Circuit issue causing OBDII code B3155 in my 2014 GMC Sierra?

- Start by visually inspecting the wiring and connectors for any visible damage. Use a multimeter to test the continuity and voltage in the circuit. Check the operation of the passenger door lock switch and the door lock actuator.

4. Is it safe to continue driving my 2014 GMC Sierra with OBDII code B3155 related to the Passenger Door Lock Switch Circuit?

- It is generally safe to drive, but it is recommended to address the issue promptly to avoid potential inconvenience or safety concerns associated with door lock malfunctions.

5. Can I repair the Passenger Door Lock Switch Circuit issue causing OBDII code B3155 in my 2014 GMC Sierra myself?

- If you have experience with automotive electrical systems and the necessary tools, you may be able to diagnose and repair the issue yourself. However, if you are unsure, it is best to consult a professional mechanic.

6. How much does it typically cost to repair the Passenger Door Lock Switch Circuit problem triggering OBDII code B3155 in a 2014 GMC Sierra?

- The cost of repair can vary depending on the specific cause of the issue and whether you choose to do the repairs yourself or take your vehicle to a mechanic. Costs may range from a few dollars for simple fixes to a few hundred dollars for more complex repairs.

7. Will resetting the OBDII code B3155 related to the Passenger Door Lock Switch Circuit in my 2014 GMC Sierra make the problem go away?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code. It is essential to diagnose and address the root cause of the problem to prevent further issues.

8. Can a faulty passenger door lock actuator trigger OBDII code B3155 in a 2014 GMC Sierra?

- Yes, a malfunctioning door lock actuator can contribute to the Passenger Door Lock Switch Circuit issue and trigger the OBDII code B3155. It is one of the potential causes that should be checked during diagnosis.

9. Are there any troubleshooting tips for addressing OBDII code B3155 in a 2014 GMC Sierra related to the Passenger Door Lock Switch Circuit?

- Some troubleshooting tips include checking for blown fuses related to the door lock system, ensuring proper power supply to the passenger door switch, and confirming the operation of the door lock actuator.

10. How can I prevent OBDII code B3155 from recurring in my 2014 GMC Sierra after repairing the Passenger Door Lock Switch Circuit issue?

- To prevent the code from recurring, make sure all repairs are done correctly, use quality replacement parts, and perform regular maintenance checks on the door lock system to catch any potential issues early.

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