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U184A 2017 Chevrolet Silverado Code - Lost Communication with Body Control Module on Low Speed CAN Bus

Quick Answer

The U184A code for a 2017 Chevrolet Silverado indicates that there has been a loss of communication with the Body Control Module (BCM) on the Low Speed Controller Area Network (CAN) Bus. Common causes include Faulty Body Control Module, Wiring or connector issues in the CAN Bus network, Electrical interference or signal disruption. 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, Wiring or connector issues in the CAN Bus network, Electrical interference or signal disruption.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code U184A 2017 Chevrolet Silverado Description

The U184A code for a 2017 Chevrolet Silverado indicates that there has been a loss of communication with the Body Control Module (BCM) on the Low Speed Controller Area Network (CAN) Bus. The BCM is a crucial component of the vehicle's electrical system, responsible for controlling various functions such as interior and exterior lighting, power windows, door locks, and other body-related systems. The Low Speed CAN Bus is a communication network that allows various modules within the vehicle to exchange information at a lower data rate compared to the High Speed CAN Bus.

OBDII Code U184A 2017 Chevrolet Silverado - Lost Communication with Body Control Module on Low Speed CAN Bus
U184A 2017 Chevrolet Silverado Code - Lost Communication with Body Control Module on Low Speed CAN Bus

Common Causes of U184A 2017 Chevrolet Silverado

  1. Faulty Body Control Module
  2. Wiring or connector issues in the CAN Bus network
  3. Electrical interference or signal disruption
  4. Software glitches or programming errors
  5. Water damage or corrosion in the BCM or CAN Bus components

Symptoms of U184A 2017 Chevrolet Silverado

  1. Malfunctioning interior and exterior lighting
  2. Inoperative power windows or door locks
  3. Dashboard warning lights illuminated
  4. Issues with remote keyless entry system
  5. Unresponsive control of various body-related functions

How to Fix U184A 2017 Chevrolet Silverado

  1. Diagnose the issue using a diagnostic scan tool to confirm the U184A code and locate the source of the communication loss.
  2. Inspect the wiring harness and connectors in the Low Speed CAN Bus network for any damage, corrosion, or loose connections.
  3. Test the Body Control Module for proper functionality and communication with the vehicle's other modules.
  4. Address any identified issues such as replacing a faulty BCM, repairing wiring harnesses, or resolving software glitches.
  5. Clear the diagnostic trouble codes, perform a test drive, and ensure that the issue has been successfully resolved.

Cost to Fix U184A 2017 Chevrolet Silverado

The cost estimate for repairing the U184A code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the required repairs. In general, the cost of replacing a Body Control Module can range from $200 to $600, excluding labor costs. The total repair bill, including parts and labor, can range from $300 to $1000 or more. It is important to note that the actual repair costs may differ based on the location, labor rates, and the extent of the repairs needed. Customers are advised to consult with their local auto repair shops for a more accurate estimate.

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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.

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