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B2955 2017 GMC Sierra Code - Security Sensor Data Circuit Malfunction

Quick Answer

The B2955 diagnostic trouble code (DTC) in a 2017 GMC Sierra relates to a security sensor data circuit malfunction. Common causes include Wiring issues or corrosion in the security sensor data circuit, Faulty security sensors or modules, Interference from electronic devices affecting the security system. 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
B2955 2017 GMC Sierra indicates Security Sensor Data Circuit Malfunction.
Common causes
Common causes include Wiring issues or corrosion in the security sensor data circuit, Faulty security sensors or modules, Interference from electronic devices affecting the security system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B2955 2017 GMC Sierra Description

The B2955 diagnostic trouble code (DTC) in a 2017 GMC Sierra relates to a security sensor data circuit malfunction. This code indicates that there is an issue with the security system's sensor data circuit, which is responsible for monitoring and controlling various security features in the vehicle. The security system plays a crucial role in protecting the vehicle from theft and unauthorized access, so any malfunction in this circuit can have significant implications for the vehicle's security and overall performance.

OBDII Code B2955 2017 GMC Sierra - Security Sensor Data Circuit Malfunction
B2955 2017 GMC Sierra Code - Security Sensor Data Circuit Malfunction

Common Causes of B2955 2017 GMC Sierra

  1. Wiring issues or corrosion in the security sensor data circuit
  2. Faulty security sensors or modules
  3. Interference from electronic devices affecting the security system
  4. Water damage or exposure to environmental elements
  5. Software glitches in the security system

Symptoms of B2955 2017 GMC Sierra

  1. Difficulty starting the vehicle
  2. Security system warning light illuminated on the dashboard
  3. False alarms triggered by the security system
  4. Vehicle entering security lockout mode
  5. Issues with key fob recognition

How to Fix B2955 2017 GMC Sierra

  1. Perform a comprehensive diagnostic scan to identify the specific cause of the security sensor data circuit malfunction.
  2. Inspect the wiring and connections in the security system for any signs of damage or corrosion.
  3. Test the security sensors and modules to determine if they are functioning correctly.
  4. Reset the security system and reprogram any necessary components to address software glitches.
  5. Replace any faulty sensors, modules, or wiring components as needed to resolve the issue.

Cost to Fix B2955 2017 GMC Sierra

The typical repair costs for addressing a security sensor data circuit malfunction can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts and labor for this type of repair can range from $200 to $500 or more. However, it's important to note that the actual costs may be higher or lower based on factors such as the location of the repair shop, the make and model of the vehicle, and the complexity of the repair process. It's advisable to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate for resolving the B2955 DTC in a 2017 GMC Sierra.

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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 B2955 2017 GMC Sierra Code

1. What does the OBDII code B2955 mean on a 2017 GMC Sierra?

B2955 indicates a "Security Sensor Data Circuit Malfunction," meaning there is an issue with the communication or data signal in the vehicle’s theft deterrent system.

2. What are the common symptoms of code B2955 in a 2017 GMC Sierra?

Symptoms may include the vehicle not starting, the security light staying illuminated on the dashboard, or intermittent starting issues.

3. What causes the B2955 code to appear on a 2017 GMC Sierra?

Common causes include a faulty theft deterrent module, damaged wiring or connectors in the security sensor circuit, or issues with the key fob or ignition switch.

4. Can a dead key fob battery trigger the B2955 code?

No, a dead key fob battery typically won’t trigger this code, but a malfunctioning key fob or improper communication with the theft deterrent system might.

5. How can I diagnose the B2955 code on my 2017 GMC Sierra?

Start by checking the security system wiring and connectors for damage or corrosion. Then, use a scan tool to monitor data from the theft deterrent module and review communication signals.

6. Is it safe to drive with the B2955 code on my 2017 GMC Sierra?

It may not be safe, as the vehicle could experience starting issues or potentially fail to start altogether, leaving you stranded.

7. How do I fix the B2955 code on a 2017 GMC Sierra?

Repairs may include replacing faulty wiring or connectors, reprogramming the theft deterrent module, or replacing a defective module or ignition switch.

8. Can I clear the B2955 code without fixing the problem?

You can clear the code with a scan tool, but if the underlying issue isn’t resolved, the code will likely return, and starting issues may persist.

9. Will replacing the key fob fix the B2955 code on a 2017 GMC Sierra?

Replacing the key fob may help if the issue is related to the fob's signal or programming, but it won’t fix problems in the theft deterrent system’s wiring or module.

10. Do I need to take my 2017 GMC Sierra to a dealership to fix the B2955 code?

You don’t necessarily need a dealership, but due to the complexity of the theft deterrent system, professional diagnostics with specialized tools may be required.

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