AutoCodes – Chevrolet – U184A 2017 Chevrolet Silverado

U184A 2017 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 2017 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 253

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 2017 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 2017 Chevrolet Silverado - Lost Communication with Body Control Module on Low Speed CAN Bus - AutoCodes.com — U184A 2017 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 2017 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 2017 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 2017 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 2017 Chevrolet Silverado code?

Need more information on how to fix the U184A 2017 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 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U184A in a 2017 Chevrolet Silverado?

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

2. What does the OBDII code U184A "Lost Communication with Body Control Module on Low Speed CAN Bus" mean?

- This code indicates a communication problem between the vehicle's onboard diagnostic system and the body control module on the low-speed Controller Area Network (CAN) bus.

3. What are the possible causes of OBDII code U184A in a 2017 Chevrolet Silverado?

- Potential causes include a faulty body control module, wiring issues, loose connections, or a malfunction in the CAN bus network.

4. How can I diagnose and repair OBDII code U184A in my 2017 Chevrolet Silverado?

- To diagnose this issue, you may need to check the wiring connections, inspect the body control module, and use a diagnostic scan tool to pinpoint the exact cause. Repair may involve replacing the body control module or repairing the wiring.

5. Can OBDII code U184A in a 2017 Chevrolet Silverado be fixed without professional help?

- While some basic troubleshooting steps can be taken by DIY enthusiasts, resolving this code may require specialized diagnostic equipment and expertise. It is recommended to consult a qualified mechanic for proper diagnosis and repair.

6. Is it safe to continue driving my 2017 Chevrolet Silverado with OBDII code U184A present?

- It is not recommended to drive the vehicle with unresolved communication issues between the onboard system and the body control module, as it can affect the proper functioning of essential vehicle systems.

7. Are there any recalls or technical service bulletins related to OBDII code U184A in a 2017 Chevrolet Silverado?

- It's advisable to check with Chevrolet dealerships or online databases for any relevant recalls or technical service bulletins related to this specific OBDII code to see if there are known issues or remedies available.

8. How much does it typically cost to repair OBDII code U184A in a 2017 Chevrolet Silverado?

- The cost of repair for this code can vary depending on the exact cause of the issue, parts needed, labor costs, and whether any special programming or calibration is required. It's best to get estimates from reputable mechanics or dealerships.

9. Can a low vehicle battery voltage cause OBDII code U184A to appear in a 2017 Chevrolet Silverado?

- Low vehicle battery voltage can potentially lead to communication problems between modules, including the body control module. Ensuring the battery is in good condition and properly charged is essential for optimal system performance.

10. How can I prevent OBDII code U184A from reoccurring in my 2017 Chevrolet Silverado?

- Regular maintenance, including checking the electrical connections, keeping the vehicle battery charged, and addressing any warning signs promptly, can help prevent communication issues and the recurrence of this OBDII code.