AutoCodes – GMC – U007F 2015 GMC Sierra

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

Quick Answer

The devices connected to the object high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted. 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 Check for more codes, Faulty Control Module, Control Module harness is open or shorted.
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.

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Code Popularity 170

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 20, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U007F 2015 GMC Sierra Description

The devices connected to the object high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices when the ignition switch is in any position other than OFF. The object high-speed GMLAN serial data bus uses terminating resistors that are in parallel with the object high-speed GMLAN (+) and (-) circuits. The Diagnostic Trouble Code (DTC) sets when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U007F 2015 GMC Sierra - Control Module Communication FlexRay 1B Bus Off - AutoCodes.com — U007F 2015 GMC Sierra Code - Control Module Communication FlexRay 1B Bus Off

What does this mean?

What are the Possible Causes of the DTC U007F 2015 GMC Sierra?

Check for more codes
Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC U007F 2015 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U007F 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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.