AutoCodes – Chevrolet – U2099 2016 Chevrolet Silverado

U2099 2016 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 2016 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 245

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 2016 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 2016 Chevrolet Silverado - High Speed Communication Enable Circuit - AutoCodes.com — U2099 2016 Chevrolet Silverado Code - High Speed Communication Enable Circuit

What does this mean?

What are the Possible Causes of the DTC U2099 2016 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 2016 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 2016 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 2016 Chevrolet Silverado code?

Need more information on how to fix the U2099 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U2099 2016 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 2016 Chevrolet Silverado Code

What does the OBDII code U2099 indicate on a 2016 Chevrolet Silverado?

The U2099 code in a 2016 Chevrolet Silverado signifies an issue with the high-speed communication enable circuit, which is part of the vehicleâ€™s network communication system.

What are common symptoms of code U2099 in a 2016 Chevrolet Silverado?

Symptoms can include the check engine light turning on, communication errors on the dashboard, reduced vehicle performance, or in some cases, no noticeable symptoms at all.

What causes the U2099 code to appear on a 2016 Chevrolet Silverado?

Common causes include faulty wiring or connectors in the communication network, a bad control module, or issues with the CAN (Controller Area Network) bus.

How can I diagnose the U2099 code in a 2016 Chevrolet Silverado?

Diagnosis should start with using a scan tool to check for additional codes that might indicate where the communication breakdown is occurring. Inspect all related wiring and connectors for damage or corrosion, and check the operation of related modules.

What are the steps to repair the U2099 code on a 2016 Chevrolet Silverado?

Repairs may involve repairing or replacing damaged wires or connectors, replacing faulty modules, or resetting the vehicleâ€™s communication system. It might also require reprogramming or updating the firmware of the control modules.

Is it safe to drive a 2016 Chevrolet Silverado with the U2099 code active?

While the vehicle may still operate, driving with the U2099 code can lead to further complications or communication failures in essential systems. It is advisable to address the issue as soon as possible.

Can a faulty battery or alternator trigger the U2099 code in a 2016 Chevrolet Silverado?

While less common, electrical issues such as a failing battery or alternator can affect the vehicleâ€™s voltage levels, potentially leading to communication problems that trigger the U2099 code.

What tools are necessary to resolve the U2099 code in a 2016 Chevrolet Silverado?

Tools needed might include a professional OBD-II scanner, digital multimeter, and possibly an oscilloscope to diagnose communication issues deeply. Additionally, standard hand tools for accessing and repairing wiring and components are required.