AutoCodes – Chevrolet – U184A 2016 Chevrolet Silverado

U184A 2016 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 2016 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.

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Code Popularity 209

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 U184A 2016 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 2016 Chevrolet Silverado - Lost Communication with Body Control Module on Low Speed CAN Bus - AutoCodes.com — U184A 2016 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 2016 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 2016 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 2016 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 2016 Chevrolet Silverado code?

Need more information on how to fix the U184A 2016 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 U184A 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U184A in a 2016 Chevrolet Silverado?

- Common symptoms include issues with power windows, door locks, interior lights, and other body control module functions.

2. What causes the OBDII code U184A indicating "Lost Communication with Body Control Module on Low Speed CAN Bus" in a 2016 Chevrolet Silverado?

- The code is typically triggered by a communication breakdown between the vehicle's control modules and the body control module.

3. How can I diagnose the cause of the U184A code in my 2016 Chevrolet Silverado?

- Diagnosing the issue involves checking the wiring connections, inspecting the CAN bus network, and testing the body control module for faults.

4. Are there any common repair tips for resolving the U184A code in a 2016 Chevrolet Silverado?

- Repair tips include checking for loose or damaged wiring, ensuring proper CAN bus communication, and potentially replacing the body control module if necessary.

5. Can the U184A code in a 2016 Chevrolet Silverado be cleared/reset without fixing the underlying issue?

- While the code can be cleared temporarily, it is essential to address the communication problem to prevent recurrence and ensure proper functioning of the vehicle systems.

6. Is it safe to continue driving a 2016 Chevrolet Silverado with the U184A code present?

- It is not recommended to drive the vehicle with the U184A code active, as it may lead to further electrical issues and affect the operation of critical systems controlled by the body control module.

7. How much does it typically cost to repair the U184A code in a 2016 Chevrolet Silverado?

- The repair cost can vary depending on the exact cause of the communication failure, with expenses ranging from checking and securing wiring connections to potentially replacing the body control module.

8. Can a DIY enthusiast fix the U184A code issue in a 2016 Chevrolet Silverado?

- While some basic troubleshooting steps can be taken by DIY enthusiasts, diagnosing and repairing the U184A code may require advanced diagnostic tools and expertise, making professional assistance advisable.

9. Are there any preventive maintenance measures to avoid the U184A code in a 2016 Chevrolet Silverado?

- Regularly checking the vehicle's electrical connections, keeping the wiring harnesses secure, and addressing any warning signs promptly can help prevent issues leading to the U184A code.

10. How long does it typically take to repair the U184A code in a 2016 Chevrolet Silverado?

- The repair time can vary based on the exact cause of the communication loss, the availability of parts, and the expertise of the technician, with some fixes taking a few hours to complete.