AutoCodes – GMC – U007F 2017 GMC Sierra

U007F 2017 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 2017 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 208

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 2017 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 2017 GMC Sierra - Control Module Communication FlexRay 1B Bus Off - AutoCodes.com — U007F 2017 GMC Sierra Code - Control Module Communication FlexRay 1B Bus Off

What does this mean?

What are the Possible Causes of the DTC U007F 2017 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 2017 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 2017 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 2017 GMC Sierra code?

Need more information on how to fix the U007F 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U007F 2017 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 2017 GMC Sierra Code

1. What does the OBDII code U007F mean on a 2017 GMC Sierra?

The U007F code indicates a communication issue on the FlexRay 1B Bus, which is a high-speed communication network used by control modules in the vehicle.

2. What are the symptoms of the U007F code on a 2017 GMC Sierra?

Common symptoms include warning lights on the dashboard, such as the check engine light or stability control light, malfunctioning electronic systems, or intermittent issues with vehicle performance.

3. What causes the U007F code to appear on a 2017 GMC Sierra?

The code is often caused by a faulty control module, damaged or corroded wiring, poor electrical connections, or a failure in the FlexRay communication network.

4. Can I drive my 2017 GMC Sierra with the U007F code?

Itâ€™s possible to drive with this code, but itâ€™s not recommended since it can lead to further issues with vehicle systems that rely on proper communication.

5. How do I diagnose the U007F code on a 2017 GMC Sierra?

Start by checking for damaged wiring and connectors in the FlexRay network, inspecting related control modules, and using a scan tool to pinpoint the fault.

6. What tools are needed to diagnose the U007F code on a 2017 GMC Sierra?

A professional-grade OBDII scanner with advanced diagnostic capabilities is needed to access and analyze the FlexRay network and related control modules.

7. How can the U007F code on a 2017 GMC Sierra be repaired?

Repairs may include replacing damaged wiring, cleaning corroded connections, reprogramming or replacing faulty control modules, or addressing grounding issues.

8. Is the U007F code common in 2017 GMC Sierra vehicles?

Itâ€™s not a common code but can occur in vehicles with complex communication networks like the FlexRay system when there are electrical or module-related issues.

9. How much does it cost to fix the U007F code on a 2017 GMC Sierra?

Repair costs vary depending on the cause, but they can range from $100 for a simple wiring repair to $1,000 or more if a control module needs replacement.

10. Can a dead battery cause the U007F code on a 2017 GMC Sierra?

Yes, a weak or dead battery can disrupt communication on the FlexRay network and trigger the U007F code. Always check the battery and charging system first.