AutoCodes – Chevrolet – U184C 2015 Chevrolet Silverado

U184C 2015 Chevrolet Silverado Code - Lost Communication with Instrument Cluster 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 Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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: U184C 2015 Chevrolet Silverado indicates Lost Communication with Instrument Cluster on Low Speed CAN Bus.
Common causes: Common causes include Faulty Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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 225

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 U184C 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 U184C 2015 Chevrolet Silverado - Lost Communication with Instrument Cluster on Low Speed CAN Bus - AutoCodes.com — U184C 2015 Chevrolet Silverado Code - Lost Communication with Instrument Cluster on Low Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U184C 2015 Chevrolet Silverado?

Faulty Instrument Cluster
Instrument Cluster harness is open or shorted
Instrument Cluster circuit poor electrical connection

How to Fix the DTC U184C 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 U184C 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 U184C 2015 Chevrolet Silverado code?

Need more information on how to fix the U184C 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 U184C 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U184C in a 2015 Chevrolet Silverado?

The common symptoms include loss of communication with the instrument cluster, malfunctioning gauges, warning lights illuminated on the dashboard, and in some cases, the vehicle may go into a limp mode.

2. What does the OBDII code U184C "Lost Communication with Instrument Cluster on Low Speed CAN Bus" mean?

This code indicates a communication error between the onboard diagnostic system and the instrument cluster over the low-speed CAN bus network.

3. What are the possible causes of code U184C in a 2015 Chevrolet Silverado?

Common causes include a faulty instrument cluster, damaged wiring or connectors in the CAN bus network, a malfunctioning control module, or a software glitch.

4. How can I diagnose the U184C trouble code in my 2015 Chevrolet Silverado?

Diagnosing this code typically involves using a diagnostic scanner to retrieve the trouble codes, checking the instrument cluster for power and ground, inspecting the CAN bus network for damage, and testing the control modules for proper communication.

5. Can I still drive my 2015 Chevrolet Silverado with the U184C trouble code present?

It is not recommended to drive the vehicle with this code present, as it can affect the functionality of important systems like the instrument cluster, potentially leading to unsafe driving conditions.

6. How can I repair the U184C code in my Chevrolet Silverado?

Repairing this code involves addressing the root cause, which may include replacing the instrument cluster, repairing damaged wiring or connectors, reprogramming control modules, or updating software as necessary.

7. Is it possible to clear the U184C trouble code without fixing the underlying issue?

While clearing the code may temporarily turn off the warning light, it is not recommended as the underlying issue will persist and may lead to further problems down the line.

8. How much does it typically cost to repair the U184C trouble code in a 2015 Chevrolet Silverado?

The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a DIY enthusiast fix the U184C trouble code in a 2015 Chevrolet Silverado?

While some basic diagnostics can be performed by DIYers, diagnosing and repairing advanced electrical issues like this code may require specialized tools and expertise best left to professional mechanics.

10. How can I prevent the U184C trouble code from reoccurring in my Chevrolet Silverado?

Regular maintenance, avoiding electrical issues like water damage, and promptly addressing any warning lights or unusual symptoms can help prevent the reoccurrence of the U184C trouble code in your vehicle.