AutoCodes – Chevrolet – U184D 2015 Chevrolet Silverado

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

Quick Answer

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Common causes include Faulty Radio, Radio harness is open or shorted, Radio 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: U184D 2015 Chevrolet Silverado indicates Lost Communication with Radio on Low Speed CAN Bus.
Common causes: Common causes include Faulty Radio, Radio harness is open or shorted, Radio 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.

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Code Popularity 196

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 24, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U184D 2015 Chevrolet Silverado Description

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Once the scan tool is connected to the serial data circuit through the Data Link Connector (DLC), the scan tool can be used to monitor each device for diagnostic purposes and to check for Diagnostic Trouble Codes (DTC). When the vehicle is ON, each device communicating on the serial data circuit sends a state of health message to ensure that the device is operating properly. When a device stops communicating on the serial data circuit, for example, if the device loses power or ground, the state of health message it normally sends on the serial data circuit disappears. Other devices on the serial data circuit, which expect to receive that state of health message, detect its absence; those devices in turn set a DTC associated with the loss of state of health of the non-communicating device. A loss of serial data communications DTC does not represent a failure of the devices that contain the stored DTC.

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

What does this mean?

What are the Possible Causes of the DTC U184D 2015 Chevrolet Silverado?

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

How to Fix the DTC U184D 2015 Chevrolet Silverado?

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 U184D 2015 Chevrolet Silverado 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 U184D 2015 Chevrolet Silverado code?

Need more information on how to fix the U184D 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 vehicleâ€™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 itâ€™s generally safe to drive, functionality related to the infotainment system may be impaired. Itâ€™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 isnâ€™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.