AutoCodes – Chevrolet – U184A 2014 Chevrolet Silverado

U184A 2014 Chevrolet Silverado Code - Lost Communication with Body Control Module 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 Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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: U184A 2014 Chevrolet Silverado indicates Lost Communication with Body Control Module on Low Speed CAN Bus.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 252

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U184A 2014 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 U184A 2014 Chevrolet Silverado - Lost Communication with Body Control Module on Low Speed CAN Bus - AutoCodes.com — U184A 2014 Chevrolet Silverado Code - Lost Communication with Body Control Module on Low Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U184A 2014 Chevrolet Silverado?

Faulty Body Control Module (BCM)
Body Control Module harness is open or shorted
Body Control Module circuit poor electrical connection

How to Fix the DTC U184A 2014 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 U184A 2014 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 U184A 2014 Chevrolet Silverado code?

Need more information on how to fix the U184A 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U184A 2014 Chevrolet Silverado 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 U184A 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U184A in a 2014 Chevrolet Silverado?

- Common symptoms include issues with power windows, door locks, interior lights, and other body control module functions not working properly.

2. What does the OBDII code U184A indicate in a 2014 Chevrolet Silverado?

- The code U184A indicates a lost communication with the Body Control Module on the Low Speed CAN Bus.

3. What are some possible causes of the U184A code in a 2014 Chevrolet Silverado?

- Possible causes include a faulty Body Control Module, damaged wiring or connectors in the CAN Bus circuit, or issues with the communication network.

4. How can I diagnose the U184A code in my 2014 Chevrolet Silverado?

- Diagnosing the U184A code may require using a diagnostic scanner to communicate with the Body Control Module and checking for any stored fault codes or communication issues.

5. How can I repair the U184A code in my 2014 Chevrolet Silverado?

- Repairing the U184A code may involve fixing any damaged wiring or connectors in the Low Speed CAN Bus circuit, replacing the Body Control Module if faulty, or addressing any communication network issues.

6. Can I drive my 2014 Chevrolet Silverado with the U184A code present?

- It is not recommended to drive the vehicle with the U184A code present, as it may affect the proper functioning of critical body control module functions.

7. Will resetting the OBDII code U184A in my 2014 Chevrolet Silverado make it go away permanently?

- Resetting the code may temporarily clear the error, but if the underlying issue causing the communication problem is not addressed, the code is likely to reappear.

8. Is it possible to fix the U184A code in a 2014 Chevrolet Silverado without professional help?

- While some basic troubleshooting steps can be taken, diagnosing and repairing the U184A code may require professional help, especially when dealing with complex communication system issues.

9. How much does it cost to repair the U184A code in a 2014 Chevrolet Silverado?

- The cost of repairing the U184A code can vary depending on the specific cause of the issue, the parts needed for repair, and labor costs. It is recommended to get a diagnostic done to get an accurate estimate.

10. Can a DIY enthusiast with automotive knowledge fix the U184A code in a 2014 Chevrolet Silverado?

- Depending on the level of expertise and access to tools, a DIY enthusiast with automotive knowledge may be able to diagnose and repair simple causes of the U184A code, but complex issues may require professional assistance.