AutoCodes – Chevrolet – U007B 2015 Chevrolet Silverado

U007B 2015 Chevrolet Silverado Code - Control Module Communication High 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: U007B 2015 Chevrolet Silverado indicates Control Module Communication High 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 193

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 U007B 2015 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 U007B 2015 Chevrolet Silverado - Control Module Communication High Speed Extension CAN Bus Off - AutoCodes.com — U007B 2015 Chevrolet Silverado Code - Control Module Communication High Speed Extension CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U007B 2015 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 U007B 2015 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 U007B 2015 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 U007B 2015 Chevrolet Silverado code?

Need more information on how to fix the U007B 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U007B 2015 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 U007B 2015 Chevrolet Silverado Code

1. What are common symptoms of OBDII code U007B in a 2015 Chevrolet Silverado?

- Common symptoms include issues with the vehicle's transmission, engine performance, and overall drivability. The check engine light may also illuminate.

2. What does the OBDII code U007B indicate in a 2015 Chevrolet Silverado?

- The code U007B indicates a problem with the Control Module Communication High Speed Extension CAN Bus Off in the vehicle's network.

3. What are possible causes of OBDII code U007B in a 2015 Chevrolet Silverado?

- Possible causes include faulty wiring or connections in the high-speed CAN bus network, a defective control module, or a communication error between modules.

4. How can I diagnose the OBDII code U007B in my 2015 Chevrolet Silverado?

- Diagnosing the code U007B typically involves using a professional OBDII scanner to retrieve the specific fault codes and then conducting a thorough inspection of the high-speed CAN bus system.

5. Can I still drive my 2015 Chevrolet Silverado with the U007B trouble code?

- It is not recommended to drive the vehicle with the U007B trouble code present, as it can lead to potential safety hazards and further damage to the vehicle's systems.

6. How can I repair OBDII code U007B in a 2015 Chevrolet Silverado?

- Repairing the U007B code may involve checking and repairing any damaged wiring or connections in the high-speed CAN bus system, replacing faulty control modules, and ensuring proper communication between modules.

7. Is it safe to clear the U007B trouble code in my 2015 Chevrolet Silverado?

- Clearing the trouble code temporarily may turn off the check engine light, but it is essential to diagnose and address the underlying issue causing the code to prevent further problems.

8. Can a DIY enthusiast fix the U007B code in a 2015 Chevrolet Silverado?

- While some basic troubleshooting like checking connections can be done by a DIY enthusiast, diagnosing and repairing the complex high-speed CAN bus system issues may require professional help.

9. How much does it cost to repair OBDII code U007B in a 2015 Chevrolet Silverado?

- The cost of repairing the U007B code can vary depending on the underlying issue, parts needed for replacement, and labor costs. It is advisable to get estimates from reputable automotive technicians.

10. How often does the U007B code occur in a 2015 Chevrolet Silverado?

- The U007B code may occur infrequently in a 2015 Chevrolet Silverado, but it is essential to address it promptly to prevent any potential damage to the vehicle's systems.