AutoCodes – GMC – U007E 2014 GMC Sierra

U007E 2014 GMC Sierra Code - Control Module Communication FlexRay 1A 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: U007E 2014 GMC Sierra indicates Control Module Communication FlexRay 1A 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 305

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 U007E 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 U007E 2014 GMC Sierra - Control Module Communication FlexRay 1A Bus Off - AutoCodes.com — U007E 2014 GMC Sierra Code - Control Module Communication FlexRay 1A Bus Off

What does this mean?

What are the Possible Causes of the DTC U007E 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 U007E 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 U007E 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 U007E 2014 GMC Sierra code?

Need more information on how to fix the U007E 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U007E 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 U007E 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code U007E in a 2014 GMC Sierra?

- Common symptoms include communication issues with various control modules, warning lights on the dashboard, and possible drivability issues.

2. What does the U007E code "Control Module Communication FlexRay 1A Bus Off" mean for a 2014 GMC Sierra?

- This code indicates a loss of communication on the FlexRay 1A bus between control modules in the vehicle.

3. What are some possible causes of the U007E trouble code in a 2014 GMC Sierra?

- Possible causes include faulty wiring or connections, a malfunctioning control module, software issues, or a problem with the FlexRay communication network.

4. How can I diagnose the U007E OBDII code in my 2014 GMC Sierra?

- Diagnosis typically involves checking the wiring and connections related to the FlexRay network, testing the control modules, and using a diagnostic scanner to pinpoint the communication issue.

5. Can I continue driving my 2014 GMC Sierra with the U007E trouble code present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further communication issues between critical control modules.

6. How can I repair the U007E code in my 2014 GMC Sierra?

- Repairing the U007E code may involve addressing the specific cause, such as repairing wiring, replacing a faulty control module, updating software, or resolving any network communication issues.

7. Is it necessary to reset the trouble codes after repairing the U007E code in a 2014 GMC Sierra?

- Yes, it is recommended to clear the trouble codes after repairing the U007E code to ensure the system recognizes the issue has been resolved.

8. Can a DIY enthusiast fix the U007E trouble code in a 2014 GMC Sierra?

- Depending on the cause of the code, some DIY enthusiasts may be able to address the issue by checking connections, inspecting wiring, or replacing control modules. However, complex issues may require professional assistance.

9. Are there any recalls related to the U007E code in 2014 GMC Sierra vehicles?

- It is advised to check with the manufacturer or authorized service centers for any recalls related to the U007E code in 2014 GMC Sierra vehicles.

10. How can regular maintenance help prevent the U007E trouble code in a 2014 GMC Sierra?

- Regular maintenance, including checking wiring integrity, keeping control modules updated, and addressing any communication issues promptly, can help prevent the occurrence of the U007E trouble code.