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U184E 2016 GMC Sierra Code - Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus

Quick Answer

The U184E diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that there is a communication problem with the Inflatable Restraint Sensing and Diagnostic Module (SDM) on the Low Speed Controller Area Network (CAN) Bus. Common causes include Faulty wiring or connections in the CAN Bus network, Malfunctioning Inflatable Restraint SDM module, Corrosion or damage to the connectors or terminals. 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
U184E 2016 GMC Sierra indicates Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus.
Common causes
Common causes include Faulty wiring or connections in the CAN Bus network, Malfunctioning Inflatable Restraint SDM module, Corrosion or damage to the connectors or terminals.
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 17, 2024
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Code U184E 2016 GMC Sierra Description

The U184E diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that there is a communication problem with the Inflatable Restraint Sensing and Diagnostic Module (SDM) on the Low Speed Controller Area Network (CAN) Bus. The Inflatable Restraint SDM is a crucial component of the vehicle's airbag system, responsible for monitoring and deploying the airbags in the event of a collision. The Low Speed CAN Bus is a communication network that allows various modules in the vehicle to exchange information.

OBDII Code U184E 2016 GMC Sierra - Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus
U184E 2016 GMC Sierra Code - Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus

Common Causes of U184E 2016 GMC Sierra

  1. Faulty wiring or connections in the CAN Bus network
  2. Malfunctioning Inflatable Restraint SDM module
  3. Corrosion or damage to the connectors or terminals
  4. Software issues or programming errors
  5. Electrical interference or noise affecting the communication signals

Symptoms of U184E 2016 GMC Sierra

  1. Airbag warning light illuminated on the dashboard
  2. Inability to deploy airbags in a collision
  3. Loss of communication with other safety systems
  4. Erratic behavior of other vehicle systems

How to Fix U184E 2016 GMC Sierra

  1. Perform a thorough inspection of the wiring harness and connectors in the CAN Bus network.
  2. Check for any visible damage or corrosion on the connectors and terminals.
  3. Test the communication signals between the Inflatable Restraint SDM and other modules using a diagnostic tool.
  4. Replace the Inflatable Restraint SDM module if necessary.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix U184E 2016 GMC Sierra

The cost of repairing a U184E code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts for this repair could range from $200 to $500, while labor costs could add an additional $100 to $300. Overall, the total repair cost could fall between $300 and $800. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, labor rates, and the extent of the repair needed. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost 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 U184E 2016 GMC Sierra Code

1. What does the OBDII code U184E mean on a 2016 GMC Sierra?

The U184E code indicates a lost communication issue between the Inflatable Restraint Sensing and Diagnostic Module (SDM) and the Low-Speed CAN Bus network.

2. What are the symptoms of the U184E code on a 2016 GMC Sierra?

Common symptoms include the airbag warning light illuminating, potential loss of airbag functionality, and stored communication error codes.

3. What causes the U184E code to appear on a 2016 GMC Sierra?

Potential causes include a faulty Inflatable Restraint Sensing and Diagnostic Module, damaged or corroded wiring, loose or poor connections in the CAN Bus network, or a malfunctioning control module.

4. Is it safe to drive with the U184E code on a 2016 GMC Sierra?

It may be unsafe, as the code could indicate that the airbag system is not functioning properly. It's recommended to address the issue immediately.

5. How can I diagnose the U184E code on my 2016 GMC Sierra?

Diagnosis may involve scanning the vehicle with an advanced OBDII tool, inspecting the wiring and connectors in the Low-Speed CAN Bus network, and testing the Inflatable Restraint Sensing and Diagnostic Module.

6. Can a dead battery cause the U184E code on a 2016 GMC Sierra?

Yes, a weak or dead battery can cause communication errors, including the U184E code. Ensure the battery and charging system are in good condition.

7. How do I fix the U184E code on my 2016 GMC Sierra?

Repairs may include checking and repairing damaged wiring or connectors, replacing the Inflatable Restraint Sensing and Diagnostic Module if faulty, or reprogramming related modules if necessary.

8. Do I need a professional to fix the U184E code on a 2016 GMC Sierra?

While some basic checks like inspecting wiring can be done at home, addressing module faults or reprogramming typically requires specialized tools and expertise from a professional technician.

9. Can a faulty CAN Bus cause the U184E code on a 2016 GMC Sierra?

Yes, issues with the Low-Speed CAN Bus, such as interruptions or shorts in the network, can trigger the U184E code.

10. How much does it cost to fix the U184E code on a 2016 GMC Sierra?

Repair costs can vary widely depending on the cause. Wiring or connector repairs may cost under $200, while replacing the module or extensive diagnostics could exceed $500.

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