AutoCodes – Chevrolet – U184C 2018 Chevrolet Silverado

U184C 2018 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 2018 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 204

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 2018 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 2018 Chevrolet Silverado - Lost Communication with Instrument Cluster on Low Speed CAN Bus - AutoCodes.com — U184C 2018 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 2018 Chevrolet Silverado?

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

How to Fix the DTC U184C 2018 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 2018 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 2018 Chevrolet Silverado code?

Need more information on how to fix the U184C 2018 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 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U184C in a 2018 Chevrolet Silverado?

The common symptoms include the instrument cluster not working properly, warning lights coming on the dashboard, and issues with the vehicle's displays.

2. What causes the U184C code in a 2018 Chevrolet Silverado?

The code U184C indicates a lost communication with the instrument cluster on the Low Speed CAN Bus, which can be caused by a faulty instrument cluster, wiring issues, or problems with the CAN bus network.

3. How can I diagnose the U184C code on my 2018 Chevrolet Silverado?

Diagnosing the U184C code typically involves checking the instrument cluster for power and ground, inspecting the wiring for any damage or loose connections, and using a diagnostic scanner to communicate with the vehicle's onboard computer system.

4. Can I still drive my 2018 Chevrolet Silverado with the U184C code present?

It is not recommended to drive the vehicle with the U184C code present as it may lead to inaccurate readings on the instrument cluster and potentially affect the vehicle's performance.

5. How can I repair the U184C code on my 2018 Chevrolet Silverado?

Repairing the U184C code may involve fixing any wiring issues, replacing the instrument cluster if faulty, or reprogramming the vehicle's computer system to establish communication with the instrument cluster.

6. Are there any DIY tips for addressing the U184C code in a 2018 Chevrolet Silverado?

While some basic checks like inspecting the wiring connections can be done by DIY enthusiasts, it is recommended to consult a professional mechanic for a thorough diagnosis and repair of the U184C code.

7. Is the U184C code a common issue in 2018 Chevrolet Silverado vehicles?

The U184C code related to lost communication with the instrument cluster on the Low Speed CAN Bus is not extremely common but can occur due to various electrical issues in the vehicle.

8. How much does it typically cost to fix the U184C code on a 2018 Chevrolet Silverado?

The cost of fixing the U184C code can vary depending on the exact cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic services from a professional mechanic.

9. Can the U184C code in a 2018 Chevrolet Silverado be reset without repairs?

Resetting the code without addressing the underlying issue may temporarily clear the warning light, but the problem will likely reoccur until the root cause is properly diagnosed and repaired.

10. Will the U184C code impact the overall performance of a 2018 Chevrolet Silverado?

While the U184C code itself may not directly impact the vehicle's performance, it can lead to erratic behavior of the instrument cluster and potentially affect other systems relying on data from the cluster.