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U007D 2017 GMC Sierra Code - Control Module Communication Low Speed Extension CAN Bus Off

Quick Answer

The U007D diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the Control Module Communication Low Speed Extension CAN Bus Off. Common causes include Damaged wiring or connectors in the CAN bus system, Faulty control modules, Software glitches in the vehicle's electronic control units. 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
U007D 2017 GMC Sierra indicates Control Module Communication Low Speed Extension CAN Bus Off.
Common causes
Common causes include Damaged wiring or connectors in the CAN bus system, Faulty control modules, Software glitches in the vehicle's electronic control units.
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 14, 2024
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Code U007D 2017 GMC Sierra Description

The U007D diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the Control Module Communication Low Speed Extension CAN Bus Off. This code is related to the communication network within the vehicle, specifically the Controller Area Network (CAN) bus system. The CAN bus is a network that allows various control modules in the vehicle to communicate with each other. When the Control Module Communication Low Speed Extension CAN Bus Off code is triggered, it means that there is a communication issue between one or more control modules on the low-speed CAN bus.

OBDII Code U007D 2017 GMC Sierra - Control Module Communication Low Speed Extension CAN Bus Off
U007D 2017 GMC Sierra Code - Control Module Communication Low Speed Extension CAN Bus Off

Common Causes of U007D 2017 GMC Sierra

  1. Damaged wiring or connectors in the CAN bus system
  2. Faulty control modules
  3. Software glitches in the vehicle's electronic control units
  4. Weak or failing battery affecting communication signals
  5. Water damage or corrosion in the control module connectors

Symptoms of U007D 2017 GMC Sierra

  1. Dashboard warning lights such as the check engine light or ABS light
  2. Erratic behavior of electronic components like power windows or door locks
  3. Issues with the vehicle's transmission shifting smoothly
  4. Loss of communication with certain control modules
  5. Difficulty starting the vehicle or intermittent stalling

How to Fix U007D 2017 GMC Sierra

  1. Perform a thorough diagnostic scan to retrieve the specific trouble codes and pinpoint the affected control modules.
  2. Inspect the wiring and connectors in the CAN bus system for any damage or corrosion. Repair or replace as necessary.
  3. Test the control modules for proper functionality and communication. Replace any faulty modules.
  4. Update the software in the control modules to the latest version to address any glitches.
  5. Clear the trouble codes, reset the system, and perform a test drive to ensure the issue has been resolved.

Cost to Fix U007D 2017 GMC Sierra

The typical repair costs for addressing the U007D code on a 2017 GMC Sierra can vary depending on the exact cause of the issue and the specific parts and labor required. In general, the cost of parts for replacing control modules or repairing wiring can range from $200 to $800. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair bill potentially amounting to $300 to $1000 or more. It's advisable to consult with a trusted mechanic or dealership for a more accurate estimate based on the specific diagnosis and repair needs of your vehicle.

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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 U007D 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code U007D in a 2017 GMC Sierra?

- Common symptoms include intermittent or permanent loss of communication with various control modules, warning lights such as the Check Engine Light, and potential drivability issues.

2. What does the OBDII code U007D mean for a 2017 GMC Sierra?

- The code U007D indicates a communication issue between control modules, specifically low-speed CAN bus communication being off or disrupted.

3. What are the possible causes of OBDII code U007D in a 2017 GMC Sierra?

- Possible causes include damaged wiring or connectors in the CAN bus system, faulty control modules, low battery voltage, software issues, or a defective CAN bus network.

4. How can I diagnose the OBDII code U007D in my 2017 GMC Sierra?

- Diagnosis involves checking the wiring and connectors for damage, testing control modules for functionality, ensuring proper battery voltage, and using a diagnostic scanner to monitor communication signals.

5. Can I drive my 2017 GMC Sierra with the U007D code present?

- It is not recommended to drive the vehicle with the U007D code present, as it can lead to potential safety and drivability issues. It's best to address the problem promptly.

6. How can I repair OBDII code U007D in my 2017 GMC Sierra?

- Repair steps may include repairing or replacing damaged wiring, addressing faulty control modules, ensuring proper battery voltage, updating software, and resetting the communication system.

7. Can a DIY enthusiast fix the U007D code in a 2017 GMC Sierra?

- Depending on the underlying cause, some DIY enthusiasts may be able to address the U007D code by checking and repairing wiring, replacing control modules, or updating software. However, complex issues may require professional help.

8. Is resetting the OBDII code U007D in a 2017 GMC Sierra enough to fix the problem?

- Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the communication problem. Proper diagnosis and repair are needed.

9. How common is the U007D code in a 2017 GMC Sierra?

- The U007D code is relatively uncommon but can occur due to various factors affecting the communication between control modules in a 2017 GMC Sierra.

10. Are there any preventative measures to avoid OBDII code U007D in a 2017 GMC Sierra?

- Regular maintenance, checking the electrical system for any signs of wear, and addressing any warning lights promptly can help prevent issues that may lead to the U007D code in a 2017 GMC Sierra.

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