AutoCodes – GMC – B3155 2017 GMC Sierra

B3155 2017 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 2017 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.

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Code Popularity 308

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 11, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B3155 2017 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 2017 GMC Sierra - Passenger Door Lock Switch Circuit - AutoCodes.com — B3155 2017 GMC Sierra Code - Passenger Door Lock Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B3155 2017 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 2017 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.

What does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3155 2017 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.

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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 2017 GMC Sierra Code

1. What does OBDII code B3155 for a 2017 GMC Sierra indicate?

- This code indicates a problem with the passenger door lock switch circuit in the vehicle.

2. What are the common symptoms of OBDII code B3155 in a 2017 GMC Sierra?

- Common symptoms include issues with the passenger door lock functionality, such as failure to lock or unlock the door.

3. What are some possible causes of OBDII code B3155 in a 2017 GMC Sierra?

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

4. How can I diagnose the issue related to OBDII code B3155 in my 2017 GMC Sierra?

- You can use a diagnostic scanner to retrieve the trouble code and further inspect the passenger door lock switch, wiring, and connectors for any visible damage.

5. Can I still drive my 2017 GMC Sierra with OBDII code B3155 present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper functionality of the door lock system.

6. How can I repair OBDII code B3155 in my 2017 GMC Sierra?

- Repair options may include replacing the passenger door lock switch, repairing damaged wiring or connectors, or resetting the control module after fixing the issue.

7. Is it possible to reset OBDII code B3155 in a 2017 GMC Sierra without repairing the problem?

- While you can clear the code with a diagnostic scanner, it is crucial to address the underlying issue to prevent the code from reoccurring.

8. Are there any DIY tips for troubleshooting OBDII code B3155 in a 2017 GMC Sierra?

- DIY tips may include checking for loose or damaged wiring, testing the passenger door lock switch functionality, and ensuring proper connections in the circuit.

9. Can extreme weather conditions affect the occurrence of OBDII code B3155 in a 2017 GMC Sierra?

- Yes, extreme temperatures or moisture exposure can potentially impact the door lock system components and lead to issues triggering this trouble code.

10. Should I seek professional help to fix OBDII code B3155 in my 2017 GMC Sierra?

- If you are not confident in diagnosing or repairing electrical issues, it is advisable to seek assistance from a qualified mechanic or dealership to address the problem effectively.