Engine-CodesGMC – B3155 GMC

B3155 GMC Code - Passenger Door Lock Switch Circuit

Quick Answer

The B3155 GMC code indicates a problem with the passenger door lock switch circuit in the vehicle. Common causes include Faulty passenger door lock switch, Damaged wiring or connectors in the door lock switch circuit, Corrosion or debris affecting the 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 GMC indicates Passenger Door Lock Switch Circuit.
Common causes
Common causes include Faulty passenger door lock switch, Damaged wiring or connectors in the door lock switch circuit, Corrosion or debris affecting the 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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B3155 GMC Description

The B3155 GMC code indicates a problem with the passenger door lock switch circuit in the vehicle. This code specifically relates to issues with the electrical circuit that controls the locking mechanism of the passenger door. The door lock switch is a crucial component that allows the driver or passengers to lock and unlock the door electronically. When this circuit malfunctions, it can lead to various issues that affect the convenience, safety, and security of the vehicle.

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

Common Causes of B3155 GMC

  1. Faulty passenger door lock switch.
  2. Damaged wiring or connectors in the door lock switch circuit.
  3. Corrosion or debris affecting the electrical connections.
  4. Defective door lock actuator.
  5. Issues with the body control module responsible for controlling the door lock system.

Symptoms of B3155 GMC

  1. Inability to lock or unlock the passenger door electronically.
  2. Intermittent operation of the passenger door lock switch.
  3. Unusual clicking or buzzing noises when attempting to use the door lock switch.
  4. Dashboard warning light indicating a door lock system malfunction.
  5. Passenger door not responding to the central locking system.

How to Fix B3155 GMC

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the B3155 code and pinpoint the faulty component.
  2. Inspect the passenger door lock switch, wiring, and connectors for any visible damage or corrosion. Replace any damaged parts as necessary.
  3. Test the door lock actuator to ensure it is functioning correctly. Replace the actuator if it is found to be faulty.
  4. Check the body control module for any signs of malfunction and reprogram or replace it if needed.
  5. Clear the diagnostic trouble codes and test the passenger door lock switch circuit to verify that the issue has been resolved.

Cost to Fix B3155 GMC

The typical repair costs for addressing the B3155 GMC code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for replacing the passenger door lock switch, wiring, connectors, or door lock actuator can range from $50 to $200. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair bill likely falling between $150 and $500. It is advisable to consult with a professional mechanic to obtain a more accurate estimate based on the vehicle's make and model, as well as the local labor rates.

Tech Notes for B3155 GMC









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Information for Specific GMC Models

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 GMC Code

1. What are common symptoms of OBDII code B3155 GMC regarding the passenger door lock switch circuit?

The common symptoms include the passenger door not locking or unlocking properly, erratic behavior of the door lock switch, and possible issues with the central locking system.

2. What are the possible causes of OBDII code B3155 GMC related to the passenger door lock switch circuit?

The code can be triggered by a faulty passenger door lock switch, damaged wiring or connectors in the circuit, a malfunctioning body control module, or issues with the door lock actuator.

3. How can I diagnose the cause of OBDII code B3155 GMC for the passenger door lock switch circuit?

Diagnosis typically involves inspecting the passenger door lock switch for proper function, checking the wiring and connectors for any damage, testing the door lock actuator, and scanning the body control module for related error codes.

4. What are some repair tips for fixing OBDII code B3155 GMC related to the passenger door lock switch circuit?

Repair tips may include repairing or replacing the passenger door lock switch, repairing damaged wiring or connectors, replacing the door lock actuator if necessary, and resetting the body control module after repairs.

5. Can I reset OBDII code B3155 GMC for the passenger door lock switch circuit without fixing the underlying issue?

While you can clear the code using an OBDII scanner, it is recommended to diagnose and repair the root cause to prevent the issue from recurring and ensure proper functioning of the passenger door lock system.

6. Are there any safety concerns associated with OBDII code B3155 GMC for the passenger door lock switch circuit?

If the passenger door lock is not functioning correctly due to this code, there may be safety concerns related to security and convenience, such as potential unauthorized access to the vehicle or difficulty locking the door properly.

7. Can a DIY enthusiast with automotive knowledge fix OBDII code B3155 GMC concerning the passenger door lock switch circuit?

Depending on the DIY enthusiast's skill level and access to tools, they may be able to diagnose and repair the issue themselves by following the vehicle's repair manual or seeking guidance from online resources.

8. How much does it typically cost to repair OBDII code B3155 GMC related to the passenger door lock switch circuit at a professional auto repair shop?

The cost of repairs can vary based on the specific cause of the issue, but it may involve diagnostic fees, parts replacement costs, and labor charges, which can range from a few hundred to over a thousand dollars.

9. How long does it usually take to repair OBDII code B3155 GMC for the passenger door lock switch circuit?

The repair time can vary depending on the exact cause of the issue, the availability of parts, and the shop's workload, but it typically takes a few hours to half a day to diagnose and fix the problem.

10. Is it possible for OBDII code B3155 GMC related to the passenger door lock switch circuit to cause other electrical issues in the vehicle?

While the code specifically relates to the passenger door lock switch circuit, electrical issues in one part of the vehicle can sometimes affect other systems, so it's essential to address the problem promptly to prevent potential secondary issues.

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