AutoCodes – Chevrolet – U0184 Chevrolet

U0184 Chevrolet Code - Lost Communication With Radio Unit

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Radio Unit, Radio Unit harness is open or shorted, Radio Unit 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
U0184 Chevrolet indicates Lost Communication With Radio Unit.
Common causes
Common causes include Faulty Radio Unit, Radio Unit harness is open or shorted, Radio Unit 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 10,181
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 02, 2020
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Code U0184 Chevrolet Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Radio Unit has not been received.
OBDII Code U0184 Chevrolet - Lost Communication With Radio Unit - AutoCodes.com
U0184 Chevrolet Code - Lost Communication With Radio Unit

What are the Possible Causes of the DTC U0184 Chevrolet?

  • Faulty Radio Unit
  • Radio Unit harness is open or shorted
  • Radio Unit circuit poor electrical connection

How to Fix the DTC U0184 Chevrolet?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0184 Chevrolet 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 U0184 Chevrolet code?

Need more information on how to fix the U0184 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0184 Chevrolet 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 U0184 Chevrolet Code

1. What are common symptoms of the U0184 OBDII code in a Chevrolet related to lost communication with the radio unit?

The common symptoms include radio not functioning properly, loss of sound or display, and potential issues with other vehicle systems connected to the radio unit.

2. What are the possible causes of the U0184 OBDII code in a Chevrolet indicating lost communication with the radio unit?

Possible causes include a faulty radio unit, damaged wiring or connectors, a blown fuse, software glitches, or issues with the vehicle's communication network.

3. How can I diagnose the U0184 code in my Chevrolet if I suspect a problem with the radio unit communication?

You can start by checking the wiring and connectors related to the radio unit, ensuring the fuse is intact, and using a diagnostic tool to scan for any specific communication errors with the radio unit.

4. What are some repair tips for resolving the U0184 code in a Chevrolet due to lost communication with the radio unit?

Try resetting the radio unit by disconnecting the battery for a few minutes, checking and replacing any damaged wiring or connectors, and updating the radio unit software if possible.

5. Can the U0184 OBDII code in a Chevrolet indicating lost communication with the radio unit affect other vehicle functions?

Yes, since modern vehicles have interconnected systems, issues with the radio unit communication can sometimes impact other functions like the instrument cluster or navigation system.

6. Is it safe to continue driving my Chevrolet with the U0184 code related to lost communication with the radio unit?

While it may be safe to drive, it's recommended to address the issue promptly to prevent potential problems with other vehicle systems and ensure the radio unit functions correctly.

7. How can I prevent the U0184 code from recurring in my Chevrolet after fixing the communication issue with the radio unit?

Regularly checking and maintaining the radio unit, keeping an eye on the vehicle's communication network, and addressing any electrical issues promptly can help prevent the code from reappearing.

8. Are there any common troubleshooting steps I can take at home for the U0184 OBDII code in my Chevrolet before seeking professional help?

You can try checking the radio unit connections, inspecting the wiring for any visible damage, and resetting the unit to see if the code clears before considering professional assistance.

9. Will disconnecting the battery reset the U0184 code related to lost communication with the radio unit in my Chevrolet?

Disconnecting the battery may reset the code temporarily, but if the underlying communication issue with the radio unit persists, the code is likely to reappear until the problem is resolved.

10. Do I need specialized equipment to diagnose and repair the U0184 OBDII code in my Chevrolet due to lost communication with the radio unit?

While basic diagnostic tools can help identify the issue, more advanced equipment may be necessary for pinpointing communication faults within the vehicle's network or reprogramming the radio unit.

Discuss the causes and fixes for U0184 Chevrolet OBDII Code

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