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U184D 2015 Chevrolet Silverado Code - Lost Communication with Radio on Low Speed CAN Bus

Quick Answer

The U184D diagnostic trouble code (DTC) indicates that the vehicle's on-board computer has lost communication with the radio on the Low Speed Controller Area Network (CAN) Bus. Common causes include Faulty radio unit, Damaged wiring or connectors in the Low Speed CAN Bus circuit, Defective control modules related to the radio communication. 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 2015 Chevrolet Silverado indicates Lost Communication with Radio on Low Speed CAN Bus.
Common causes
Common causes include Faulty radio unit, Damaged wiring or connectors in the Low Speed CAN Bus circuit, Defective control modules related to the radio communication.
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 07, 2024
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Code U184D 2015 Chevrolet Silverado Description

The U184D diagnostic trouble code (DTC) indicates that the vehicle's on-board computer has lost communication 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 loss of communication with the radio can disrupt the flow of information between different systems in the vehicle.

OBDII Code U184D 2015 Chevrolet Silverado - Lost Communication with Radio on Low Speed CAN Bus
U184D 2015 Chevrolet Silverado Code - Lost Communication with Radio on Low Speed CAN Bus

Common Causes of U184D 2015 Chevrolet Silverado

  1. Faulty radio unit
  2. Damaged wiring or connectors in the Low Speed CAN Bus circuit
  3. Defective control modules related to the radio communication
  4. Software issues or glitches in the vehicle's computer system
  5. Electrical interference or corrosion in the communication network

Symptoms of U184D 2015 Chevrolet Silverado

  1. Loss of audio functions (radio, Bluetooth, navigation)
  2. Malfunctioning instrument cluster display
  3. Inoperative climate control system
  4. Warning lights on the dashboard (such as the check engine light)
  5. Intermittent or complete loss of communication with the radio

How to Fix U184D 2015 Chevrolet Silverado

  1. Perform a diagnostic scan using a professional scan tool to retrieve the specific DTC and pinpoint the source of the communication loss.
  2. Inspect the wiring harness and connectors associated with the Low Speed CAN Bus for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the radio unit and related control modules to ensure they are functioning properly. Replace any faulty components.
  4. Clear the DTC from the vehicle's computer memory and re-establish communication between the radio and the CAN Bus network.
  5. Conduct a road test to verify that the communication issue has been resolved and all affected systems are functioning correctly.

Cost to Fix U184D 2015 Chevrolet Silverado

The typical repair costs for addressing a U184D code can vary depending on the specific cause of the communication loss. In general, the cost of parts such as a new radio unit or control module, along with labor for diagnosis and repair, can range from $200 to $800. Additional costs may apply if extensive wiring repairs are needed. It's important to consult with a qualified technician to get an accurate estimate based on your vehicle's make and model, as well as the local labor rates.

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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 U184D 2015 Chevrolet Silverado Code

1. What does the OBDII code U184D indicate on a 2015 Chevrolet Silverado?

- The U184D code indicates that there is a communication issue between the vehicle's radio and the Low Speed Controller Area Network (CAN) Bus, suggesting that the radio is not sending or receiving messages correctly.

2. What are common symptoms of the U184D code in a 2015 Chevrolet Silverado?

- Symptoms may include the radio not functioning properly, other infotainment features behaving erratically, or complete failure of the radio unit.

3. What can cause the U184D code to appear in a 2015 Chevrolet Silverado?

- Causes might include a faulty radio unit, damaged wiring harnesses, issues with the CAN bus connectors, or a problem with the vehicle’s central computing module.

4. How can I troubleshoot the U184D code in a 2015 Chevrolet Silverado?

- Start by inspecting the radio unit and associated wiring for any visible damage or loose connections. Use a scan tool to check for additional codes that might indicate where the communication breakdown is occurring.

5. Is it safe to drive a 2015 Chevrolet Silverado with the U184D code?

- While it’s generally safe to drive, functionality related to the infotainment system may be impaired. It’s advisable to fix the issue to restore full functionality and avoid potential distractions or other electronic issues.

6. What are the repair steps for fixing the U184D code in a 2015 Chevrolet Silverado?

- Repair typically involves checking and repairing any faulty wiring or connections, replacing the radio unit if it is defective, and ensuring all CAN bus components are functioning properly. A professional diagnostic tool might be necessary to pinpoint the issue.

7. Could the U184D code affect other systems in my 2015 Chevrolet Silverado?

- Yes, since the CAN bus facilitates communication between different electronic control units, a failure in one part can affect others, potentially leading to further electronic system malfunctions.

8. How often does the U184D code occur in 2015 Chevrolet Silverados?

- This issue isn’t extremely common but can occur, especially in vehicles with higher mileage or those that have experienced significant wear and tear on their electronic systems.

9. What tools are needed to diagnose the U184D code in a 2015 Chevrolet Silverado?

- Diagnosing this code effectively requires a professional-grade OBDII scanner that can interpret CAN bus signals, along with basic hand tools to inspect and repair wiring and connections.

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