AutoCodesChevrolet – B3155 2017 Chevrolet Silverado

B3155 2017 Chevrolet Silverado 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 Chevrolet Silverado 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 229
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 2017 Chevrolet Silverado 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 Chevrolet Silverado - Passenger Door Lock Switch Circuit - AutoCodes.com
B3155 2017 Chevrolet Silverado Code - Passenger Door Lock Switch Circuit

What are the Possible Causes of the DTC B3155 2017 Chevrolet Silverado?

  • 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 Chevrolet Silverado?

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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado code?

Need more information on how to fix the B3155 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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 2017 Chevrolet Silverado Code

1. What does OBDII code B3155 mean on a 2017 Chevrolet Silverado?

B3155 indicates a problem with the passenger door lock switch circuit, often caused by an electrical or communication issue in the door lock system.

2. What are the symptoms of code B3155 in a 2017 Chevy Silverado?

Common symptoms include the passenger door lock not responding to commands, intermittent operation, or no functionality at all.

3. What causes the B3155 code to trigger?

Possible causes include a faulty passenger door lock switch, damaged wiring or connectors, a malfunctioning door lock actuator, or a software-related issue in the Body Control Module (BCM).

4. Can a blown fuse cause the B3155 code?

Yes, a blown fuse in the door lock circuit can interrupt power and trigger the B3155 code.

5. How do you diagnose the B3155 code on a Chevy Silverado?

Diagnosis involves inspecting the switch, wiring, and connectors for damage, testing the door lock actuator, and using a scan tool to check for BCM-related issues.

6. Can I still drive my Silverado with the B3155 code?

Yes, you can still drive the truck, but the passenger door lock may not function properly, potentially causing security concerns.

7. How do you fix the B3155 code on a 2017 Chevrolet Silverado?

Repairs may include replacing the passenger door lock switch, repairing damaged wiring or connectors, or updating/reprogramming the BCM if necessary.

8. Is the B3155 code covered under warranty?

This depends on your vehicle’s warranty terms. If the truck is still under a bumper-to-bumper or electrical system warranty, the repair might be covered.

9. Can a faulty Body Control Module cause the B3155 code?

Yes, a malfunctioning BCM can lead to communication issues with the door lock switch circuit, triggering the B3155 code.

10. How much does it cost to repair the B3155 code on a 2017 Silverado?

Repair costs vary but typically range from $100 to $300, depending on whether the issue is with the switch, wiring, or BCM.

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