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U2179 GMC Code - Lost Communication With Television Module

Quick Answer

The U2179 diagnostic trouble code (DTC) for GMC vehicles indicates that there is a communication failure with the Television Module. Common causes include Faulty Television Module, Loose or damaged wiring connections, Software glitches in the multimedia system. 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
U2179 GMC indicates Lost Communication With Television Module.
Common causes
Common causes include Faulty Television Module, Loose or damaged wiring connections, Software glitches in the multimedia system.
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 Aug 19, 2024
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Code U2179 GMC Description

The U2179 diagnostic trouble code (DTC) for GMC vehicles indicates that there is a communication failure with the Television Module. The Television Module is responsible for controlling various entertainment features in the vehicle, such as the rear seat entertainment system or other multimedia functions. When communication with this module is lost, it can lead to a loss of functionality in these entertainment systems.

OBDII Code U2179 GMC - Lost Communication With Television Module
U2179 GMC Code - Lost Communication With Television Module

Common Causes of U2179 GMC

  1. Faulty Television Module.
  2. Loose or damaged wiring connections.
  3. Software glitches in the multimedia system.
  4. Water or moisture damage to the Television Module.
  5. Electrical issues within the vehicle's communication network.

Symptoms of U2179 GMC

  1. Inability to change settings or access multimedia features.
  2. Blank screen or no audio output from the entertainment system.
  3. Error messages related to the Television Module.
  4. Unresponsive controls for multimedia functions.

How to Fix U2179 GMC

  1. Perform a diagnostic scan to confirm the U2179 code and identify the specific issue.
  2. Inspect wiring connections and repair or replace any damaged wires.
  3. Check for water damage and replace the Television Module if necessary.
  4. Update software or firmware for the multimedia system.
  5. Reset the system and clear the DTC to see if the issue has been resolved.

Cost to Fix U2179 GMC

The cost of repairing a lost communication with the Television Module can vary depending on the specific issue and the extent of the repairs needed. In general, replacing a faulty Television Module can range from $200 to $600, including parts and labor. Additional costs may apply for diagnostic scans, wiring repairs, or software updates. It is recommended to consult with a trusted mechanic or dealership for a more accurate estimate based on your vehicle's make and model.

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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 U2179 GMC Code

1. What are the common symptoms of OBDII code U2179 GMC (Lost Communication With Television Module)?

- Common symptoms include the malfunction indicator light (MIL) illuminating on the dashboard, loss of communication with the television module, and potential issues with the vehicle's entertainment system.

2. What are the possible causes of the U2179 GMC trouble code?

- Possible causes of this code include a faulty television module, damaged wiring or connectors related to the television module, software issues, or a communication network problem within the vehicle.

3. How can I diagnose the U2179 GMC trouble code?

- Diagnosing this code typically involves using a professional OBDII scanner to retrieve the specific fault codes, checking the wiring and connectors related to the television module, and performing network communication tests to identify the root cause.

4. What are some repair tips for addressing the U2179 GMC code?

- Repair tips may include inspecting and repairing any damaged wiring or connectors, replacing the faulty television module if necessary, updating software as recommended by the manufacturer, and ensuring proper network communication within the vehicle.

5. Can I drive my vehicle with the U2179 GMC trouble code?

- It is generally not recommended to drive the vehicle with unresolved communication issues, as it may affect the functionality of the entertainment system and potentially lead to other electrical problems. It is advisable to address the code promptly.

6. How much does it typically cost to repair the U2179 GMC trouble code?

- The cost of repairing this code can vary depending on the specific cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to obtain a diagnosis and repair estimate from a qualified mechanic.

7. Is the U2179 GMC trouble code a common issue in GMC vehicles?

- While this code may not be as common as some other OBDII codes, issues related to lost communication with modules can occur in various vehicle makes and models, including GMC vehicles equipped with the affected television module.

8. Are there any preventive measures to avoid the U2179 GMC trouble code?

- Regularly maintaining and inspecting the vehicle's electrical system, including the entertainment system components, can help prevent communication issues that may trigger the U2179 trouble code. Following the manufacturer's recommended maintenance schedule is also key.

9. Can I reset the U2179 GMC trouble code on my own?

- While you can clear the trouble code with an OBDII scanner, it is essential to diagnose and address the underlying issue causing the code to prevent it from reoccurring. If the root cause is not resolved, the code is likely to return.

10. How long does it take to repair the U2179 GMC trouble code?

- The repair time for this code can vary depending on the complexity of the issue, the availability of parts, and the expertise of the technician. Simple fixes like reconnecting a loose wire may take less time, while more involved repairs could require additional diagnostic steps and labor.

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