AutoCodesGMC – B3155 2014 GMC Sierra

B3155 2014 GMC Sierra Code - Passenger Door Lock Switch Circuit

Quick Answer

The Body Control Module (BCM) monitors the voltage level of the door lock and door unlock signal circuits. Common causes include Faulty Passenger Door Lock Switch, Passenger Door Lock Switch harness is open or shorted, Passenger Door Lock Switch 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
B3155 2014 GMC Sierra indicates Passenger Door Lock Switch Circuit.
Common causes
Common causes include Faulty Passenger Door Lock Switch, Passenger Door Lock Switch harness is open or shorted, Passenger Door Lock Switch 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 210
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 11, 2023
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Code B3155 2014 GMC Sierra Description

The Body Control Module (BCM) monitors the voltage level of the door lock and door unlock signal circuits. When the driver door lock switch is in the open position, the voltage level in the signal circuit will be near 12 V. When the driver door lock switch is pressed to the lock or unlock position, the voltage level in the appropriate signal circuit will drop to 0 V and the BCM will detect the voltage drop and command the door latches to perform the requested lock or unlock command. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a short to ground in the switch circuit.
OBDII Code B3155 2014 GMC Sierra - Passenger Door Lock Switch Circuit - AutoCodes.com
B3155 2014 GMC Sierra Code - Passenger Door Lock Switch Circuit

What are the Possible Causes of the DTC B3155 2014 GMC Sierra?

  • Faulty Passenger Door Lock Switch
  • Passenger Door Lock Switch harness is open or shorted
  • Passenger Door Lock Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B3155 2014 GMC Sierra?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3155 2014 GMC Sierra 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 B3155 2014 GMC Sierra code?

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Need Help with the Code?

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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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