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Engine-Codes – GMC – B2955 2018 GMC Sierra

B2955 2018 GMC Sierra Code - Security Sensor Data Circuit Malfunction

Quick Answer

The B2955 code on a 2018 GMC Sierra indicates a malfunction in the security sensor data circuit. Common causes include Damaged wiring or connectors in the security sensor circuit, Faulty security sensor, Malfunctioning security module. 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 2018 GMC Sierra indicates Security Sensor Data Circuit Malfunction.
Common causes
Common causes include Damaged wiring or connectors in the security sensor circuit, Faulty security sensor, Malfunctioning security module.
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 17, 2024
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Code B2955 2018 GMC Sierra Description

The B2955 code on a 2018 GMC Sierra indicates a malfunction in the security sensor data circuit. This code is related to the vehicle's security system, which is designed to prevent unauthorized access and theft. The security sensor data circuit is responsible for transmitting information between various security sensors and the vehicle's computer system. When this circuit malfunctions, it can lead to issues with the security system, potentially causing the vehicle to not start or triggering false alarms.

OBDII Code B2955 2018 GMC Sierra - Security Sensor Data Circuit Malfunction
B2955 2018 GMC Sierra Code - Security Sensor Data Circuit Malfunction

Common Causes of B2955 2018 GMC Sierra

  1. Damaged wiring or connectors in the security sensor circuit
  2. Faulty security sensor
  3. Malfunctioning security module
  4. Problem with the vehicle's computer system

Symptoms of B2955 2018 GMC Sierra

  1. Intermittent starting issues
  2. Security system warning light illuminated on the dashboard
  3. Inability to start the vehicle
  4. False alarms triggered by the security system

How to Fix B2955 2018 GMC Sierra

  1. Perform a thorough inspection of the security sensor data circuit to identify any damaged wiring or connectors.
  2. Test the security sensors to determine if any are faulty and need replacement.
  3. Check the security module for any malfunctions and replace if necessary.
  4. Scan the vehicle's computer system for any error codes and address any related issues.
  5. Clear the B2955 code from the vehicle's computer system and test the security system to ensure proper operation.

Cost to Fix B2955 2018 GMC Sierra

The typical repair costs for addressing a B2955 code on a 2018 GMC Sierra can vary depending on the specific cause of the issue. In general, parts and labor for this type of repair can range from $200 to $500. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's recommended to check local rates for a more accurate estimate.

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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 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code B2955 in a 2018 GMC Sierra?

The common symptoms of OBDII code B2955 in a 2018 GMC Sierra include issues with the security system, such as the security light staying on or flashing, difficulty starting the vehicle, or the vehicle not starting at all.

2. What causes the Security Sensor Data Circuit Malfunction in a 2018 GMC Sierra?

The Security Sensor Data Circuit Malfunction (OBDII code B2955) in a 2018 GMC Sierra is typically caused by a fault in the security system wiring, a malfunctioning security sensor, or a communication error between the security system components.

3. How can I diagnose the Security Sensor Data Circuit Malfunction in my 2018 GMC Sierra?

Diagnosing OBDII code B2955 in a 2018 GMC Sierra involves using a diagnostic scanner to retrieve the trouble code, testing the security system components for proper operation, and inspecting the wiring for any damage or loose connections.

4. Can I still drive my 2018 GMC Sierra with OBDII code B2955 present?

It is not recommended to drive your 2018 GMC Sierra with OBDII code B2955 (Security Sensor Data Circuit Malfunction) present, as it may lead to security system issues that could potentially affect the vehicle's operation or security.

5. How can I repair OBDII code B2955 in my 2018 GMC Sierra?

Repairing OBDII code B2955 in a 2018 GMC Sierra involves fixing any wiring issues, replacing faulty security sensors, or addressing communication problems between the security system components. It is recommended to consult a professional mechanic for an accurate diagnosis and repair.

6. Will resetting the OBDII code B2955 in my 2018 GMC Sierra fix the issue?

Resetting the OBDII code B2955 in a 2018 GMC Sierra may temporarily clear the trouble code, but it will not fix the underlying issue causing the Security Sensor Data Circuit Malfunction. It is important to diagnose and repair the root cause of the problem.

7. Is OBDII code B2955 a common issue in 2018 GMC Sierra vehicles?

While OBDII code B2955 (Security Sensor Data Circuit Malfunction) may not be as common as some other trouble codes, it can still occur in 2018 GMC Sierra vehicles due to various factors such as wiring faults, sensor malfunctions, or communication errors.

8. Can extreme weather conditions trigger OBDII code B2955 in a 2018 GMC Sierra?

Extreme weather conditions, such as extreme cold or heat, can potentially affect the operation of the security system components in a 2018 GMC Sierra and lead to the triggering of OBDII code B2955 (Security Sensor Data Circuit Malfunction).

9. How long does it typically take to repair OBDII code B2955 in a 2018 GMC Sierra?

The time it takes to repair OBDII code B2955 in a 2018 GMC Sierra can vary depending on the exact cause of the issue. Simple repairs like fixing a wiring issue may take a few hours, while more complex repairs involving sensor replacement or system reprogramming may take longer.

10. Can I prevent OBDII code B2955 from occurring in my 2018 GMC Sierra?

While some causes of OBDII code B2955 may be unavoidable, regular maintenance and inspections of the security system components in your 2018 GMC Sierra can help prevent issues that may lead to the Security Sensor Data Circuit Malfunction.

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