AutoCodes – Chevrolet – U007D 2018 Chevrolet Silverado

U007D 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 295

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 U007D 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 U007D 2018 Chevrolet Silverado - Control Module Communication Low Speed Extension CAN Bus Off - AutoCodes.com — U007D 2018 Chevrolet Silverado Code - Control Module Communication Low Speed Extension CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U007D 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 U007D 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 U007D 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 U007D 2018 Chevrolet Silverado code?

Need more information on how to fix the U007D 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado Code

1. What does the OBDII code U007D mean on a 2018 Chevrolet Silverado?

The code U007D indicates a communication fault in the Low-Speed CAN (Controller Area Network) bus, specifically that the network is "off" or not functioning properly.

2. What are common symptoms of the U007D code in a 2018 Silverado?

Symptoms include warning lights on the dashboard, intermittent electrical issues, failure of certain systems like the radio or HVAC, and potentially reduced vehicle performance.

3. What causes the U007D code to appear on a 2018 Chevrolet Silverado?

Potential causes include damaged wiring or connectors in the CAN bus network, a faulty control module, electrical interference, or a dead or weak battery.

4. How do I diagnose the U007D code on my 2018 Silverado?

Start by checking the battery voltage, inspecting all wiring and connectors for damage or corrosion, and using a diagnostic scanner to pinpoint which module is not communicating.

5. Can a weak battery trigger the U007D code on a 2018 Chevrolet Silverado?

Yes, a weak or failing battery can disrupt communication on the CAN bus network and trigger the U007D code.

6. Is it safe to drive with the U007D code active on my Silverado?

It may be safe to drive in some cases, but certain features or systems could malfunction, potentially affecting safety. It's best to address the issue promptly.

7. What repairs might fix the U007D code on a 2018 Chevrolet Silverado?

Repairs could include replacing damaged wiring, repairing or replacing connectors, reprogramming or replacing a faulty module, or replacing the battery if it's weak.

8. How much does it cost to fix the U007D code on a Chevrolet Silverado?

Repair costs vary depending on the issue, but diagnosing and fixing the problem could range from $100 for minor wiring repairs to over $1,000 if a module needs replacement.

9. Can I clear the U007D code without fixing the issue?

Clearing the code without addressing the root issue may temporarily remove the warning, but the code is likely to return until the problem is resolved.

10. What tools do I need to troubleshoot the U007D code on my 2018 Silverado?

You'll need a quality OBDII scanner capable of reading CAN bus codes, a multimeter to check voltage and continuity, and potentially wiring diagrams for your vehicle.