AutoCodes – GMC – U007E 2016 GMC Sierra

U007E 2016 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 2016 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 231

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 2016 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 2016 GMC Sierra - Control Module Communication FlexRay 1A Bus Off - AutoCodes.com — U007E 2016 GMC Sierra Code - Control Module Communication FlexRay 1A Bus Off

What does this mean?

What are the Possible Causes of the DTC U007E 2016 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 2016 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 2016 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 2016 GMC Sierra code?

Need more information on how to fix the U007E 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U007E 2016 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 2016 GMC Sierra Code

1. What does the OBDII code U007E mean on a 2016 GMC Sierra?

U007E indicates an issue with the Control Module Communication FlexRay 1A Bus, typically meaning the communication on this bus has been disrupted or is "off."

2. What are the common symptoms of code U007E in a 2016 GMC Sierra?

Symptoms may include warning lights on the dashboard, such as the Check Engine Light, reduced vehicle performance, or failure of certain electronic systems like ABS or traction control.

3. What causes the U007E code to appear on a 2016 GMC Sierra?

This code is often caused by a damaged wiring harness, faulty control module, poor electrical connections, or issues with the FlexRay communication network itself.

4. How do you diagnose the U007E code on a 2016 GMC Sierra?

Diagnosis involves using a scan tool to check for related codes, inspecting the FlexRay bus wiring and connectors, and testing the control modules for proper communication.

5. Can a faulty control module trigger the U007E code?

Yes, a malfunctioning control module that fails to send or receive signals on the FlexRay 1A Bus can trigger this code.

6. Is it safe to drive a 2016 GMC Sierra with the U007E code?

It may be unsafe to drive, depending on which systems are affected. Loss of critical functions like ABS or stability control could compromise safety.

7. How is the U007E code repaired on a 2016 GMC Sierra?

Repairs may include repairing or replacing damaged wiring, cleaning or reconnecting connectors, or replacing a faulty control module.

8. Can a dead battery cause the U007E code on a 2016 GMC Sierra?

A weak or dead battery can disrupt communication on the FlexRay network and potentially trigger this code.

9. How much does it cost to repair the U007E code on a 2016 GMC Sierra?

Costs vary widely depending on the issue. Wiring repairs may cost $100â€“$300, while replacing a control module can exceed $1,000, including programming.

10. Can clearing the code resolve the U007E issue on a 2016 GMC Sierra?

Clearing the code may work temporarily, but the underlying issue must be addressed to prevent the code from returning.