AutoCodes – Chevrolet – U007E 2018 Chevrolet Silverado

U007E 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 255

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Control Module Communication FlexRay 1A Bus Off - AutoCodes.com — U007E 2018 Chevrolet Silverado Code - Control Module Communication FlexRay 1A Bus Off

What does this mean?

What are the Possible Causes of the DTC U007E 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?

Need more information on how to fix the U007E 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U007E 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado Code

1. What does the OBDII code U007E mean for a 2018 Chevrolet Silverado?

The code U007E indicates an issue with the Control Module Communication FlexRay 1A Bus, meaning the system has detected a communication fault or disconnection on the FlexRay network.

2. What are the common symptoms of the U007E code on a 2018 Chevrolet Silverado?

Symptoms may include warning lights on the dashboard (e.g., check engine light), erratic or non-functioning electronic systems, or a loss of communication with certain control modules.

3. What can cause the U007E code to appear on a 2018 Chevrolet Silverado?

Possible causes include damaged or disconnected FlexRay wiring, faulty control modules, a defective FlexRay transceiver, or issues with the power or ground connections.

4. Is the U007E code serious for the 2018 Chevrolet Silverado?

Yes, it can be serious as it affects communication between critical control modules, potentially impairing the vehicle's performance or safety systems.

5. How can I diagnose the U007E code on my 2018 Chevrolet Silverado?

Start by inspecting the FlexRay wiring and connections for damage or loose connections. Use a scan tool to check for related codes and test the affected modules for proper operation.

6. Can I drive my 2018 Chevrolet Silverado with the U007E code?

It is not recommended to drive the vehicle with this code, as it could lead to further damage or impair essential systems like braking or steering.

7. How is the U007E code typically fixed on a 2018 Chevrolet Silverado?

Repairs may involve repairing or replacing damaged FlexRay wiring, reprogramming or replacing faulty control modules, or addressing power and ground connection issues.

8. What tools are needed to troubleshoot the U007E code?

A professional-grade scan tool capable of reading manufacturer-specific codes and network communication data is essential, along with a multimeter for electrical testing.

9. Can a software update fix the U007E code on a 2018 Chevrolet Silverado?

In some cases, a software update for the control modules may resolve communication errors, but this depends on the specific issue and diagnosis.

10. How much does it cost to fix the U007E code on a 2018 Chevrolet Silverado?

The repair cost varies depending on the issue, ranging from $100 for simple wiring repairs to $1,000 or more for replacing and reprogramming control modules.