AutoCodes – Chevrolet – U007D Chevrolet

U007D Chevrolet 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 Chevrolet 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.

Save to My Repairs My Repairs

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

Code Popularity 2,903

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

What does this mean?

What are the Possible Causes of the DTC U007D Chevrolet?

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 Chevrolet?

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 Chevrolet 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 Chevrolet code?

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

Need Help with the Code?

Get the U007D Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

U007D 2014 Chevrolet Silverado — Control Module Communication Low Speed Extension CAN Bus Off
U007D 2015 Chevrolet Silverado — Control Module Communication Low Speed Extension CAN Bus Off
U007D 2016 Chevrolet Silverado — Control Module Communication Low Speed Extension CAN Bus Off
U007D 2017 Chevrolet Silverado — Control Module Communication Low Speed Extension CAN Bus Off
U007D 2018 Chevrolet Silverado — Control Module Communication Low Speed Extension CAN Bus Off

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 Chevrolet Code

1. What does the OBDII code U007D mean on a Chevrolet?

U007D indicates a communication issue on the low-speed Controller Area Network (CAN) bus, specifically that the bus is "off" or inactive.

2. What are the common symptoms of the U007D code in a Chevrolet?

Symptoms may include warning lights on the dashboard, such as the check engine light, issues with vehicle functions like power windows or locks, or intermittent communication errors between control modules.

3. What causes the U007D code to appear on a Chevrolet?

Common causes include a faulty control module, damaged wiring or connectors on the low-speed CAN bus, electrical interference, or a malfunctioning CAN bus termination resistor.

4. Can I drive my Chevrolet with the U007D code?

It depends on the severity of the issue. While the car may still operate, certain features or systems may not work properly. Itâ€™s best to address the issue promptly to avoid further complications.

5. How do I diagnose the U007D code on a Chevrolet?

Start by using an advanced OBDII scanner to check for related codes. Inspect the wiring, connectors, and control modules on the low-speed CAN bus for damage or corrosion.

6. How do I fix the U007D code on a Chevrolet?

Repairs may involve replacing damaged wiring, cleaning corroded connectors, or replacing a faulty control module. In some cases, reprogramming or updating the module software may be necessary.

7. How much does it cost to repair the U007D code on a Chevrolet?

The cost varies depending on the root cause. Wiring or connector repairs may cost $100â€“$300, while replacing a control module can range from $500 to $1,200, including labor.

8. Can a dead battery trigger the U007D code on a Chevrolet?

Yes, a weak or dead battery can cause communication issues on the CAN bus, potentially triggering the U007D code.

9. Do I need a professional mechanic to fix the U007D code?

While basic checks like inspecting connectors and wiring can be done by a DIYer, diagnosing and repairing complex CAN bus issues often requires professional tools and expertise.

10. Can clearing the U007D code solve the issue on my Chevrolet?

Clearing the code may temporarily remove the warning, but it wonâ€™t fix the underlying problem. The issue needs to be properly diagnosed and repaired to prevent the code from returning.