AutoCodes – GMC – U007D 2014 GMC Sierra

U007D 2014 GMC Sierra Code - Control Module Communication Low Speed Extension CAN 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: U007D 2014 GMC Sierra indicates Control Module Communication Low Speed Extension CAN 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 219

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 U007D 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 U007D 2014 GMC Sierra - Control Module Communication Low Speed Extension CAN Bus Off - AutoCodes.com — U007D 2014 GMC Sierra Code - Control Module Communication Low Speed Extension CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U007D 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 U007D 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 U007D 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 U007D 2014 GMC Sierra code?

Need more information on how to fix the U007D 2014 GMC Sierra code? Get Access to Factory Service Manuals

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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 U007D 2014 GMC Sierra Code

What does the OBDII code U007D mean for my 2014 GMC Sierra?

The OBDII code U007D indicates a communication issue within the low-speed extension of the Controller Area Network (CAN) bus, meaning that the control modules are not communicating as expected.

What symptoms might I notice if my GMC Sierra has the U007D code?

Common symptoms include warning lights on the dashboard, erratic behavior of electronic components, loss of functionality in certain systems, and potential engine performance issues.

What could cause the U007D code to trigger in my vehicle?

Possible causes include damaged wiring or connectors in the CAN bus, faulty control modules, or issues with the vehicle's electrical system, such as low voltage.

Is it safe to drive my GMC Sierra with the U007D code?

While it may be safe to drive short distances, it's advisable to have the issue diagnosed and repaired as it can lead to more serious problems with vehicle systems.

How can I diagnose the U007D code accurately?

To diagnose the code, use an OBDII scanner to confirm the code, then inspect wiring and connectors for damage, check for other related codes, and test the functionality of control modules.

What are some common repairs for a U007D code in a GMC Sierra?

Common repairs include repairing or replacing damaged wiring and connectors, updating or reprogramming control modules, and ensuring proper grounding and voltage levels in the electrical system.

Can the U007D code clear itself?

In some cases, if the issue is intermittent, the code may clear itself after a few drive cycles without any further problems, but it's important to address the root cause to prevent it from returning.

Should I reset the code after repairs?

Yes, after addressing the underlying issue, you should clear the code using an OBDII scanner and then monitor the vehicle to ensure the code does not return.

Are there any specific tools needed to diagnose the U007D code?

A standard OBDII scanner is essential for reading and clearing codes, but additional tools like a multimeter may be needed to test wiring and connections for continuity and voltage.