AutoCodes – GMC – U007F 2014 GMC Sierra

U007F 2014 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 2014 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 265

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 2014 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 2014 GMC Sierra - Control Module Communication FlexRay 1B Bus Off - AutoCodes.com — U007F 2014 GMC Sierra Code - Control Module Communication FlexRay 1B Bus Off

What does this mean?

What are the Possible Causes of the DTC U007F 2014 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 2014 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 2014 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 2014 GMC Sierra code?

Need more information on how to fix the U007F 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U007F 2014 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 2014 GMC Sierra Code

1. What does the OBDII code U007F for a 2014 GMC Sierra mean?

The code U007F indicates a Control Module Communication FlexRay 1B Bus Off error on a 2014 GMC Sierra.

2. What are the common symptoms associated with the U007F code in a 2014 GMC Sierra?

Common symptoms of the U007F code may include communication issues with various control modules, loss of certain vehicle functions, warning lights on the dashboard, and potential drivability issues.

3. What are the possible causes of the U007F code on a 2014 GMC Sierra?

The U007F code in a 2014 GMC Sierra can be triggered by issues such as damaged wiring, faulty control modules, loose connections, software glitches, or problems with the FlexRay communication network.

4. How can I diagnose the U007F code on my 2014 GMC Sierra?

Diagnosing the U007F code typically involves using a diagnostic scanner to retrieve the specific error codes, checking the integrity of the wiring harness, inspecting the control modules for any signs of damage, and verifying the connections within the FlexRay communication network.

5. Can I still drive my 2014 GMC Sierra with the U007F code present?

While it may be possible to drive the vehicle with the U007F code present, it is recommended to address the underlying issue promptly to prevent potential safety hazards and further damage to the vehicle's systems.

6. How can I repair the U007F code on my 2014 GMC Sierra?

Repairing the U007F code may involve repairing or replacing damaged wiring, addressing any issues with the control modules, ensuring proper connections within the FlexRay network, and performing any necessary software updates or reprogramming.

7. Is it safe to clear the U007F code on my 2014 GMC Sierra with a diagnostic tool?

Clearing the U007F code with a diagnostic tool is generally safe after addressing the underlying issue. However, if the problem persists, it is essential to diagnose and repair the root cause to prevent the code from reappearing.

8. Do I need special tools to fix the U007F code on my 2014 GMC Sierra?

Diagnosing and repairing the U007F code may require specialized diagnostic tools, such as a professional-grade scanner capable of reading manufacturer-specific codes and accessing communication networks like FlexRay.

9. How much does it cost to fix the U007F code on a 2014 GMC Sierra?

The cost of fixing the U007F code on a 2014 GMC Sierra can vary depending on the root cause of the issue, the extent of the repairs needed, and whether any components require replacement. It is advisable to consult a professional mechanic for a detailed estimate.

10. Can the U007F code on a 2014 GMC Sierra be prevented in the future?

While some causes of the U007F code may be unavoidable, regular maintenance, timely repairs of related issues, and careful handling of the vehicle's electronic systems can help prevent the recurrence of the U007F code in the future.