AutoCodesGMC – B3155 2015 GMC Sierra

B3155 2015 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 2015 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 176
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 2015 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 2015 GMC Sierra - Passenger Door Lock Switch Circuit - AutoCodes.com
B3155 2015 GMC Sierra Code - Passenger Door Lock Switch Circuit

What are the Possible Causes of the DTC B3155 2015 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 2015 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 2015 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 2015 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 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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