AutoCodes – Chevrolet – U2099 2018 Chevrolet Silverado

U2099 2018 Chevrolet Silverado Code - High Speed Communication Enable Circuit

Quick Answer

The Body Control Module (BCM) activates the ignition circuit, when the ignition key is in ACC, ON or START. Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control 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: U2099 2018 Chevrolet Silverado indicates High Speed Communication Enable Circuit.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control 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.

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Code Popularity 244

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 24, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2099 2018 Chevrolet Silverado Description

The Body Control Module (BCM) activates the ignition circuit, when the ignition key is in ACC, ON or START. The ignition circuit wakes up the devices for serial data bus communication. The Diagnostic Trouble Code (DTC) will set when the BCM senses a short to ground on the ignition circuit.

OBDII Code U2099 2018 Chevrolet Silverado - High Speed Communication Enable Circuit - AutoCodes.com — U2099 2018 Chevrolet Silverado Code - High Speed Communication Enable Circuit

What does this mean?

What are the Possible Causes of the DTC U2099 2018 Chevrolet Silverado?

Faulty Body Control Module (BCM)
Body Control Module harness is open or shorted
Body Control Module circuit poor electrical connection

How to Fix the DTC U2099 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 U2099 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 U2099 2018 Chevrolet Silverado code?

Need more information on how to fix the U2099 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U2099 2018 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 U2099 2018 Chevrolet Silverado Code

1. What does the OBDII code U2099 mean on a 2018 Chevrolet Silverado?

The code U2099 indicates a problem with the High Speed Communication Enable Circuit in the vehicle.

2. What are common symptoms of the U2099 code in a 2018 Chevrolet Silverado?

Common symptoms of the U2099 code may include issues with the vehicle's communication system, such as loss of communication with certain modules or components.

3. What are possible causes of the U2099 code in a 2018 Chevrolet Silverado?

Possible causes of the U2099 code include damaged wiring or connectors in the high-speed communication circuit, a faulty high-speed communication module, or a problem with the vehicle's computer system.

4. How do I diagnose the U2099 code on a 2018 Chevrolet Silverado?

Diagnosing the U2099 code typically involves using a scan tool to retrieve the code and then inspecting the high-speed communication circuit components for any visible damage or issues.

5. Can I still drive my 2018 Chevrolet Silverado with the U2099 code present?

It is not recommended to drive the vehicle with the U2099 code present, as it can lead to potential communication issues with important vehicle systems.

6. How can I repair the U2099 code on a 2018 Chevrolet Silverado?

Repairing the U2099 code may involve repairing or replacing damaged wiring or connectors in the high-speed communication circuit, replacing the high-speed communication module, or addressing any underlying computer system issues.

7. Is the U2099 code a serious issue in a 2018 Chevrolet Silverado?

The U2099 code should be addressed promptly to ensure proper communication between vehicle systems and prevent potential complications down the road.

8. Can I reset the U2099 code on a 2018 Chevrolet Silverado on my own?

While you can clear the code using a scan tool, it is important to diagnose and address the root cause of the U2099 code to prevent it from reoccurring.

9. How much does it typically cost to repair the U2099 code on a 2018 Chevrolet Silverado?

The cost of repairing the U2099 code can vary depending on the cause of the issue and the needed repairs, so it is best to consult with a professional mechanic for an accurate estimate.

10. Are there any recalls or service bulletins related to the U2099 code in a 2018 Chevrolet Silverado?

It is recommended to check with Chevrolet or a dealership to see if there are any relevant recalls or service bulletins related to the U2099 code in your specific vehicle.