Engine-Codes.com
Engine-Codes – GMC – U007F 2015 GMC Sierra

U007F 2015 GMC Sierra Code - Control Module Communication FlexRay 1B Bus Off

Quick Answer

The U007F diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Control Module Communication FlexRay 1B Bus. Common causes include Faulty control module, Wiring or connection issues in the FlexRay network, Water or corrosion damage to connectors. 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
U007F 2015 GMC Sierra indicates Control Module Communication FlexRay 1B Bus Off.
Common causes
Common causes include Faulty control module, Wiring or connection issues in the FlexRay network, Water or corrosion damage to connectors.
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 13, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code U007F 2015 GMC Sierra Description

The U007F diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Control Module Communication FlexRay 1B Bus. This code signifies that there is a communication issue between the control modules in the vehicle that are connected via the FlexRay communication network. The FlexRay system is a high-speed communication protocol used in modern vehicles to facilitate data exchange between various control modules, such as the engine control module (ECM), transmission control module (TCM), anti-lock braking system (ABS), and others.

OBDII Code U007F 2015 GMC Sierra - Control Module Communication FlexRay 1B Bus Off
U007F 2015 GMC Sierra Code - Control Module Communication FlexRay 1B Bus Off

Common Causes of U007F 2015 GMC Sierra

  1. Faulty control module
  2. Wiring or connection issues in the FlexRay network
  3. Water or corrosion damage to connectors
  4. Electrical interference from aftermarket accessories
  5. Software glitches or updates needed for control modules

Symptoms of U007F 2015 GMC Sierra

  1. Check engine light illuminated
  2. Loss of power or acceleration
  3. Erratic shifting or transmission problems
  4. ABS or stability control warning lights
  5. Inoperative instrument cluster or infotainment system

How to Fix U007F 2015 GMC Sierra

  1. Begin by using a diagnostic scan tool to retrieve and record all fault codes present in the vehicle's control modules.
  2. Inspect the wiring harnesses, connectors, and terminals related to the FlexRay communication network for any signs of damage, corrosion, or loose connections.
  3. Test the control modules involved in the communication bus for proper functionality and communication.
  4. Clear the fault codes and reset the system to see if the U007F code returns.
  5. If the issue persists, consider reprogramming or replacing the affected control modules as necessary.

Cost to Fix U007F 2015 GMC Sierra

The cost of repairing a U007F code on a 2015 GMC Sierra can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this type of repair can range from $100 to $500, with labor costs adding an additional $100 to $300. Overall, the total repair cost for addressing a Control Module Communication FlexRay 1B Bus Off issue may fall within the range of $200 to $800. It is important to note that labor rates at auto repair shops can vary, so it is advisable to obtain quotes from multiple shops to ensure a competitive price.

Need more information about the U007F 2015 GMC Sierra code?

Need more information on how to fix the U007F 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U007F 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 U007F 2015 GMC Sierra Code

1. What does the OBDII code U007F for a 2015 GMC Sierra indicate?

The U007F code specifically refers to the Control Module Communication FlexRay 1B Bus Off error.

2. What are some common symptoms of the U007F code in a 2015 GMC Sierra?

Common symptoms of the U007F code include issues with communication between control modules, warning lights on the dashboard, and potential drivability issues.

3. What are the possible causes of the U007F code in a 2015 GMC Sierra?

Potential causes of the U007F code include a faulty control module, wiring or connection issues, a failed communication bus, or software-related problems.

4. How can I diagnose the U007F code in my 2015 GMC Sierra?

Diagnosing the U007F code typically involves using a professional OBDII scanner to read the code, checking for additional related codes, inspecting wiring and connections, and testing the control modules.

5. Can I still drive my 2015 GMC Sierra with the U007F code present?

It is not recommended to drive your vehicle with the U007F code active, as it can lead to further damage and safety concerns due to potential communication failures between critical control modules.

6. How can I repair the U007F code in my 2015 GMC Sierra?

Repairing the U007F code may involve fixing wiring or connection issues, replacing faulty control modules, reprogramming modules if necessary, and ensuring proper communication between modules.

7. Is it possible to reset the U007F code in a 2015 GMC Sierra without fixing the underlying issue?

While you can clear the code using an OBDII scanner, it is crucial to address the root cause of the U007F code to prevent it from reoccurring and potentially causing more significant problems.

8. Are there any DIY fixes for the U007F code in a 2015 GMC Sierra?

DIY fixes for the U007F code may include checking and securing connections, inspecting wiring for damage, and ensuring proper grounding of control modules. However, complex repairs may require professional assistance.

9. How can I prevent the U007F code from appearing in my 2015 GMC Sierra in the future?

To prevent the U007F code from reoccurring, it is essential to maintain your vehicle regularly, address any communication issues promptly, and follow manufacturer recommendations for software updates.

10. Can a mechanic help me resolve the U007F code in my 2015 GMC Sierra?

Yes, a qualified mechanic with experience in diagnosing and repairing OBDII codes can help you identify and fix the underlying cause of the U007F code in your 2015 GMC Sierra.

Discuss the causes and fixes for U007F 2015 GMC Sierra OBDII Code

Submit a New Comment

Code U007F 2015 GMC Sierra comments

No comments found for this page.