AutoCodes – GMC – U007E 2015 GMC Sierra

U007E 2015 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 2015 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 196

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U007E 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 U007E 2015 GMC Sierra - Control Module Communication FlexRay 1A Bus Off - AutoCodes.com — U007E 2015 GMC Sierra Code - Control Module Communication FlexRay 1A Bus Off

What does this mean?

What are the Possible Causes of the DTC U007E 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 U007E 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 U007E 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 U007E 2015 GMC Sierra code?

Need more information on how to fix the U007E 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U007E 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 U007E 2015 GMC Sierra Code

1. What does the OBDII code U007E for a 2015 GMC Sierra mean?

The code U007E indicates a Control Module Communication FlexRay 1A Bus Off error in the vehicle's communication network.

2. What are common symptoms of the U007E code in a 2015 GMC Sierra?

Common symptoms of the U007E code may include communication issues between control modules, warning lights on the dashboard, loss of certain vehicle functions, and possible stalling.

3. What can cause the U007E code to appear in a 2015 GMC Sierra?

Causes of the U007E code may include damaged wiring or connectors in the FlexRay communication network, faulty control modules, software issues, or a weak battery.

4. How can I diagnose the U007E code in my 2015 GMC Sierra?

Diagnosing the U007E code typically involves using a diagnostic scanner to check for additional trouble codes, inspecting the vehicle's wiring and connectors, testing the control modules, and verifying battery voltage.

5. Can I still drive my 2015 GMC Sierra with the U007E code present?

It is not recommended to drive your vehicle with the U007E code active, as it may lead to further issues or potential safety hazards. It is best to address the problem promptly.

6. How do I repair the U007E code in my 2015 GMC Sierra?

Repairing the U007E code may involve repairing or replacing damaged wiring, connectors, or control modules, updating software, and ensuring proper battery voltage.

7. Is it possible to clear the U007E code in a 2015 GMC Sierra without fixing the root cause?

Clearing the U007E code without addressing the underlying issue is not advised, as the problem may persist and trigger the code again. It is best to fix the root cause of the code.

8. Can a DIY enthusiast fix the U007E code in a 2015 GMC Sierra?

While some basic diagnostics and checks can be done by DIY enthusiasts, resolving the U007E code may require specialized equipment and expertise. It is recommended to seek professional help for proper diagnosis and repair.

9. How much can I expect to pay for repairing the U007E code in my 2015 GMC Sierra?

The cost of repairing the U007E code can vary depending on the specific cause of the issue, parts needed, and labor charges. It is advisable to get quotes from reputable mechanics or dealerships.

10. How can I prevent the U007E code from reoccurring in my 2015 GMC Sierra?

To prevent the U007E code from reoccurring, regular maintenance, checking the vehicle's electrical connections, ensuring proper battery health, and addressing any related issues promptly can help maintain a healthy communication network in the vehicle.