Engine-Codes.com
Engine-Codes – GMC – U184D 2014 GMC Sierra

U184D 2014 GMC Sierra Code - Lost Communication with Radio on Low Speed CAN Bus

Quick Answer

The diagnostic trouble code U184D for a 2014 GMC Sierra indicates that there is a communication issue with the radio on the Low Speed Controller Area Network (CAN) Bus. Common causes include Damaged wiring or connectors in the CAN Bus network, Faulty radio module, Malfunctioning Body Control Module (BCM). 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
U184D 2014 GMC Sierra indicates Lost Communication with Radio on Low Speed CAN Bus.
Common causes
Common causes include Damaged wiring or connectors in the CAN Bus network, Faulty radio module, Malfunctioning Body Control Module (BCM).
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 15, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code U184D 2014 GMC Sierra Description

The diagnostic trouble code U184D for a 2014 GMC Sierra indicates that there is a communication issue with the radio on the Low Speed Controller Area Network (CAN) Bus. The CAN Bus is a network that allows various modules in the vehicle to communicate with each other. In this case, the radio is not sending or receiving the necessary data on the low-speed CAN Bus, which can lead to a loss of functionality in the radio system.

OBDII Code U184D 2014 GMC Sierra - Lost Communication with Radio on Low Speed CAN Bus
U184D 2014 GMC Sierra Code - Lost Communication with Radio on Low Speed CAN Bus

Common Causes of U184D 2014 GMC Sierra

  1. Damaged wiring or connectors in the CAN Bus network
  2. Faulty radio module
  3. Malfunctioning Body Control Module (BCM)
  4. Software issues within the vehicle's communication system
  5. Water damage or corrosion in the radio system components

Symptoms of U184D 2014 GMC Sierra

  1. Radio not functioning properly
  2. No sound coming from the radio
  3. Display screen on the radio not working
  4. Inability to change radio settings
  5. Other systems on the low-speed CAN Bus not working correctly

How to Fix U184D 2014 GMC Sierra

  1. Begin by conducting a thorough inspection of the wiring and connectors in the CAN Bus network to look for any signs of damage or corrosion.
  2. Test the radio module to determine if it is functioning correctly or needs to be replaced.
  3. Check the Body Control Module (BCM) for any faults or errors that may be causing the communication issue.
  4. Perform a software update or reprogramming of the vehicle's communication system to address any potential software issues.
  5. Clear the diagnostic trouble code from the vehicle's system and test the radio and other affected systems to ensure proper functionality.

Cost to Fix U184D 2014 GMC Sierra

The typical repair costs for addressing a U184D code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as a new radio module or BCM, along with labor for diagnosis and repair, can range from $200 to $800. However, it is important to note that the actual cost 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 extent of the repairs needed. It is recommended to obtain quotes from local auto repair shops to get a more accurate estimate for this repair. Labor rates at auto repair shops typically range from $80 to $150 per hour.

Need more information about the U184D 2014 GMC Sierra code?

Need more information on how to fix the U184D 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U184D 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 U184D 2014 GMC Sierra Code

1. What does the OBDII code U184D on a 2014 GMC Sierra mean?

The code U184D indicates a "Lost Communication with Radio on Low Speed CAN Bus" error in the vehicle's onboard diagnostics system.

2. What are some common symptoms of the U184D code in a 2014 GMC Sierra?

Common symptoms include the radio not working, issues with other vehicle systems that rely on communication with the radio, and potentially a check engine light being illuminated.

3. What are possible causes of the U184D code in a 2014 GMC Sierra?

Possible causes include a faulty radio unit, damaged wiring or connectors in the CAN Bus network, a software glitch, or a communication breakdown between the radio and other modules in the vehicle.

4. How can I diagnose the U184D code in my 2014 GMC Sierra?

Diagnosing the U184D code typically involves checking the connections and wiring related to the radio and CAN Bus network, testing the radio unit itself, and using a diagnostic tool to scan for communication errors between modules.

5. Can I still drive my 2014 GMC Sierra with the U184D code present?

In most cases, it is safe to drive the vehicle with the U184D code, especially if there are no other noticeable issues affecting the vehicle's performance. However, it is recommended to address the underlying problem as soon as possible.

6. How can I repair the U184D code in my 2014 GMC Sierra?

Repairing the U184D code may involve repairing or replacing the radio unit, fixing any damaged wiring or connectors, updating software if needed, or resetting the communication network between modules.

7. Is it possible to reset the U184D code in a 2014 GMC Sierra without fixing the underlying issue?

While clearing the error code temporarily with an OBDII scanner is possible, the code will likely reappear until the root cause of the communication problem is addressed.

8. Are there any recalls or technical service bulletins related to the U184D code in a 2014 GMC Sierra?

It is recommended to check with a GMC dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any relevant recalls or technical service bulletins related to the U184D code in your specific vehicle.

9. Can extreme weather conditions or battery issues trigger the U184D code in a 2014 GMC Sierra?

Extreme weather conditions or battery issues can potentially cause communication problems that trigger the U184D code. It is essential to check the vehicle's electrical system and connections in such situations.

10. How can I prevent the U184D code from reoccurring in my 2014 GMC Sierra?

Regular maintenance, checking the vehicle's electrical connections, avoiding water damage to the radio unit, and keeping the software up to date can help prevent the U184D code from reoccurring in your 2014 GMC Sierra.

Discuss the causes and fixes for U184D 2014 GMC Sierra OBDII Code

Submit a New Comment

Code U184D 2014 GMC Sierra comments

No comments found for this page.