AutoCodes – Chevrolet – U18BF 2014 Chevrolet Silverado

U18BF 2014 Chevrolet Silverado Code - Secondary High Speed CAN Bus Subnet Configuration List

Quick Answer

The devices on the high-speed General Motor Local Area Network (GMLAN) serial data bus and the chassis high-speed GMLAN serial data bus must be programmed with software that specifically identifies the correct type and quantity of devices on the bus based on RPO configuration. Common causes include Faulty Module that is not configured, Module harness is open or shorted, Module circuit poor electrical connection. 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
U18BF 2014 Chevrolet Silverado indicates Secondary High Speed CAN Bus Subnet Configuration List.
Common causes
Common causes include Faulty Module that is not configured, Module harness is open or shorted, Module circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 239
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 24, 2023
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Code U18BF 2014 Chevrolet Silverado Description

The devices on the high-speed General Motor Local Area Network (GMLAN) serial data bus and the chassis high-speed GMLAN serial data bus must be programmed with software that specifically identifies the correct type and quantity of devices on the bus based on RPO configuration. If a device was not properly configured after installation, the appropriate U Code may be set for that device. No external circuit diagnosis is involved. The Diagnostic Trouble Code (DTC) will set when the device is not configured properly, or the device recognizes a programming error.
OBDII Code U18BF 2014 Chevrolet Silverado - Secondary High Speed CAN Bus Subnet Configuration List - AutoCodes.com
U18BF 2014 Chevrolet Silverado Code - Secondary High Speed CAN Bus Subnet Configuration List

What are the Possible Causes of the DTC U18BF 2014 Chevrolet Silverado?

  • Faulty Module that is not configured
  • Module harness is open or shorted
  • Module circuit poor electrical connection

How to Fix the DTC U18BF 2014 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 U18BF 2014 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 U18BF 2014 Chevrolet Silverado code?

Need more information on how to fix the U18BF 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U18BF 2014 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 U18BF 2014 Chevrolet Silverado Code

1. What does the OBDII code U18BF mean on a 2014 Chevrolet Silverado?

The code U18BF indicates an issue with the Secondary High Speed CAN Bus Subnet Configuration List in the vehicle.

2. What are some common symptoms of the U18BF trouble code in a 2014 Chevrolet Silverado?

Common symptoms of the U18BF code may include intermittent or total loss of communication with various vehicle systems, dashboard warning lights, and potential drivability issues.

3. What are some possible causes of the U18BF code on a 2014 Chevrolet Silverado?

Potential causes of the U18BF code can include damaged wiring or connectors in the CAN bus system, faulty control modules, software issues, or a malfunctioning CAN bus network.

4. How can I diagnose the U18BF trouble code on my 2014 Chevrolet Silverado?

Diagnosing the U18BF code may involve using a professional OBDII scanner to retrieve the specific details of the code, checking the CAN bus wiring and connections for any visible damage, and testing the various control modules on the network.

5. Can I still drive my 2014 Chevrolet Silverado with the U18BF code present?

It is not recommended to drive your vehicle with the U18BF code present, as it may lead to potential safety hazards or further damage to the vehicle's systems.

6. How can I repair the U18BF code on my 2014 Chevrolet Silverado?

Repairing the U18BF code may involve repairing or replacing damaged wiring or connectors, reprogramming control modules, updating software, or replacing faulty components as needed.

7. Is the U18BF code a serious issue in a 2014 Chevrolet Silverado?

The U18BF code should be addressed promptly to prevent any further complications with the vehicle's communication systems and ensure proper functionality of the CAN bus network.

8. Can a DIY enthusiast fix the U18BF trouble code on a 2014 Chevrolet Silverado?

While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the U18BF code may require advanced knowledge and specialized tools, so professional assistance is recommended.

9. How much does it cost to repair the U18BF code on a 2014 Chevrolet Silverado?

The cost of repairing the U18BF code can vary depending on the exact cause of the issue, the extent of the repairs needed, and whether any components require replacement. It is advisable to consult a professional for an accurate estimate.

10. How can I prevent the U18BF trouble code from recurring on my 2014 Chevrolet Silverado?

To prevent the U18BF code from recurring, it's essential to address any underlying issues promptly, perform regular maintenance on the vehicle's communication systems, and follow the manufacturer's recommended service schedule.

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