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U1900 GMC Code - Lost Communication With Speech To Text Interface Module

Quick Answer

The U1900 GMC code indicates that there is a communication issue between the vehicle's onboard computer system and the Speech to Text Interface Module. Common causes include Faulty Speech to Text Interface Module, Wiring issues or loose connections, Software glitches or programming errors. 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
U1900 GMC indicates Lost Communication With Speech To Text Interface Module.
Common causes
Common causes include Faulty Speech to Text Interface Module, Wiring issues or loose connections, Software glitches or programming errors.
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 09, 2024
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Code U1900 GMC Description

The U1900 GMC code indicates that there is a communication issue between the vehicle's onboard computer system and the Speech to Text Interface Module. This module is responsible for converting spoken words into text for features such as voice commands, hands-free calling, and other voice-activated functions in the vehicle. When communication is lost with this module, it can lead to a loss of functionality for these features.

OBDII Code U1900 GMC - Lost Communication With Speech To Text Interface Module
U1900 GMC Code - Lost Communication With Speech To Text Interface Module

Common Causes of U1900 GMC

  1. Faulty Speech to Text Interface Module
  2. Wiring issues or loose connections
  3. Software glitches or programming errors
  4. Water damage or corrosion in the module
  5. Physical damage to the module or wiring

Symptoms of U1900 GMC

  1. Loss of voice command functionality
  2. Inability to use hands-free calling
  3. Error messages related to communication issues
  4. Unresponsive voice-activated features
  5. Limited functionality of infotainment system

How to Fix U1900 GMC

  1. Diagnose the issue by checking for any error codes and using a diagnostic scan tool to pinpoint the communication problem.
  2. Inspect the wiring and connections to ensure there are no loose or damaged wires causing the issue.
  3. Test the Speech to Text Interface Module for functionality and replace it if necessary.
  4. Check for any software updates or reprogramming needed for the module to restore communication.
  5. Clear the diagnostic trouble codes and test the voice-activated features to ensure they are functioning properly.

Cost to Fix U1900 GMC

The cost of repairing a U1900 GMC code can vary depending on the specific cause of the communication issue. In general, replacing a faulty Speech to Text Interface Module can range from $200 to $500, including parts and labor. However, additional costs may apply if wiring repairs or software updates are needed. It's advisable to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates can vary, so it's recommended to research local rates for a more precise 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 U1900 GMC Code

1. What are the common symptoms of OBDII code U1900 in a GMC vehicle?

- Common symptoms include issues with speech recognition features, malfunctioning voice commands, and the inability to use hands-free calling or voice control functions.

2. What causes the U1900 code indicating lost communication with the Speech To Text Interface Module in a GMC?

- The U1900 code is typically triggered by a faulty Speech To Text Interface Module, wiring issues, loose connections, or a communication breakdown between the module and other vehicle systems.

3. How can I diagnose the U1900 trouble code related to the Speech To Text Interface Module in my GMC?

- To diagnose the U1900 code, you can use an OBDII scanner to retrieve the code, check for any additional related codes, inspect the wiring and connections to the module, and conduct a thorough system test.

4. What are some repair tips for resolving the U1900 code in a GMC due to lost communication with the Speech To Text Interface Module?

- Repair tips include checking and securing all connections to the module, inspecting and repairing any damaged wiring, replacing the Speech To Text Interface Module if necessary, and clearing the trouble codes after repairs are completed.

5. Can I drive my GMC with the U1900 code indicating lost communication with the Speech To Text Interface Module?

- While it may be possible to drive the vehicle with the U1900 code, it is advisable to address the issue promptly to prevent further communication malfunctions and potential safety risks associated with impaired voice control features.

6. Is the U1900 code related to the Speech To Text Interface Module a common issue in GMC vehicles?

- The U1900 code related to lost communication with the Speech To Text Interface Module is not as common as some other OBDII codes, but it can still occur in GMC vehicles equipped with this specific module.

7. Do I need specialized tools to repair the U1900 trouble code in my GMC related to the Speech To Text Interface Module?

- While specialized tools may not be required, having an OBDII scanner, basic hand tools for inspecting connections, and possibly a multimeter for testing electrical components can be helpful in diagnosing and repairing the U1900 code.

8. Can a DIY enthusiast fix the U1900 trouble code indicating lost communication with the Speech To Text Interface Module in a GMC?

- Depending on the DIY enthusiast's skill level and access to resources, it may be possible to diagnose and repair the U1900 code. However, if unsure, it is recommended to seek professional assistance to ensure proper resolution.

9. What are the potential risks of ignoring the U1900 trouble code related to the Speech To Text Interface Module in my GMC?

- Ignoring the U1900 code can lead to continued issues with voice control functions, potential strain on other vehicle systems, and the risk of losing important communication features while driving.

10. Are there any software updates or recalls related to the U1900 code in GMC vehicles with Speech To Text Interface Modules?

- It is advisable to check with GMC dealerships or official sources for any software updates or recalls related to the U1900 code and the Speech To Text Interface Module in your specific vehicle model.

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