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Engine-Codes – GMC – U184E GMC

U184E GMC Code - Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus

Quick Answer

The U184E diagnostic trouble code (DTC) for GMC vehicles indicates that there is a communication failure with the Inflatable Restraint Sensing and Diagnostic Module on the Low-Speed Controller Area Network (CAN) bus. Common causes include Faulty wiring or connectors in the communication circuit, A malfunctioning Inflatable Restraint Sensing and Diagnostic Module, Issues with the vehicle's onboard computer. 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
U184E GMC indicates Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus.
Common causes
Common causes include Faulty wiring or connectors in the communication circuit, A malfunctioning Inflatable Restraint Sensing and Diagnostic Module, Issues with the vehicle's onboard computer.
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 09, 2024
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Code U184E GMC Description

The U184E diagnostic trouble code (DTC) for GMC vehicles indicates that there is a communication failure with the Inflatable Restraint Sensing and Diagnostic Module on the Low-Speed Controller Area Network (CAN) bus. In simpler terms, this code suggests that the vehicle's onboard computer is unable to establish proper communication with the module responsible for controlling the deployment of the airbags and other safety systems.

OBDII Code U184E GMC - Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus
U184E GMC Code - Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus

Common Causes of U184E GMC

  1. Faulty wiring or connectors in the communication circuit.
  2. A malfunctioning Inflatable Restraint Sensing and Diagnostic Module.
  3. Issues with the vehicle's onboard computer.
  4. Corrosion or damage to the CAN bus connections.
  5. Software glitches in the vehicle's computer system.

Symptoms of U184E GMC

  1. Illumination of the airbag warning light on the dashboard.
  2. Inability to deploy airbags in the event of a collision.
  3. Malfunctioning seat belt pretensioners.
  4. Failure of side airbags to deploy.
  5. Communication errors with the vehicle's diagnostic system.

How to Fix U184E GMC

  1. Perform a thorough inspection of the wiring and connectors in the communication circuit to identify any faults or damage.
  2. Test the Inflatable Restraint Sensing and Diagnostic Module to determine if it is functioning correctly.
  3. Check for any software updates or glitches in the vehicle's computer system that may be causing the communication failure.
  4. Repair or replace any damaged wiring or connectors in the CAN bus system.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix U184E GMC

The cost of repairing a U184E DTC can vary depending on the specific cause of the issue and the labor rates of the repair shop. In general, the typical repair costs for this type of issue can range from $200 to $500, including parts and labor. 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. It's advisable to check with local repair shops to get a more accurate estimate for this repair.

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Information for Specific GMC Models

  • U184E 2014 GMC Sierra — Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus
  • U184E 2015 GMC Sierra — Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus
  • U184E 2016 GMC Sierra — Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus
  • U184E 2017 GMC Sierra — Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus
  • U184E 2018 GMC Sierra — Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus
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 U184E GMC Code

1. What are the common symptoms of OBDII code U184E GMC?

- Common symptoms include the airbag warning light illuminating on the dashboard, loss of communication with the airbag module, and potential disabling of the airbag system.

2. What can cause the U184E GMC code to appear?

- The code may appear due to a faulty inflatable restraint sensing and diagnostic module, issues with the low-speed CAN bus communication network, damaged wiring, or a poor connection.

3. How can I diagnose the U184E code related to the Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus?

- Diagnosis involves checking the wiring harness for any visible damage, inspecting the connections to the airbag module, and using a diagnostic scanner to read the trouble codes and perform a pinpoint test.

4. Is it safe to drive with the U184E trouble code present?

- It is not recommended to drive with the U184E code active, as it indicates a potential issue with the airbag system, which could compromise vehicle safety in the event of a collision.

5. Can I repair the U184E code issue on my own?

- While some basic troubleshooting like checking connections and wiring can be done by DIY enthusiasts, resolving the U184E code may require specialized diagnostic equipment and expertise, best handled by a professional technician.

6. Are there any common mistakes to avoid when dealing with the U184E code?

- Avoiding proper diagnosis and simply clearing the code without addressing the underlying issue can lead to recurring problems with the airbag system. It is crucial to identify and fix the root cause of the code.

7. How much does it typically cost to repair the U184E GMC code?

- The cost of repair can vary depending on the specific cause of the code and the labor rates in your area. It is advisable to get a diagnosis from a qualified mechanic to determine the exact repair cost.

8. Can a low vehicle battery voltage trigger the U184E code?

- Yes, a low vehicle battery voltage can sometimes lead to communication issues with the airbag module and trigger the U184E code. Ensuring the battery is in good condition is a good starting point for troubleshooting.

9. Will resetting the U184E code make it go away permanently?

- Resetting the code without fixing the underlying issue will only turn off the warning light temporarily. The code is likely to reappear until the root cause of the problem is resolved.

10. How important is it to address the U184E code promptly?

- It is crucial to address the U184E code promptly as it indicates a potential problem with the airbag system, which is a critical safety component in the event of a collision. Delaying repairs can compromise vehicle safety.

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