AutoCodes – Chevrolet – U0073 2016 Chevrolet Silverado

U0073 2016 Chevrolet Silverado Code - Control Module Communication Bus OFF

Quick Answer

Modules connected to the high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Module/Device that is not communicating, Module/Device harness is open or shorted, Module/Device 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: U0073 2016 Chevrolet Silverado indicates Control Module Communication Bus OFF.
Common causes: Common causes include Faulty Module/Device that is not communicating, Module/Device harness is open or shorted, Module/Device 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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 443

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 19, 2023

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U0073 2016 Chevrolet Silverado Description

Modules connected to the 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 modules. The modules have prerecorded information about what messages need to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) will be set when the device setting the DTC has attempted to establish communications on the serial data circuits more than 3 times in 5 s.

OBDII Code U0073 2016 Chevrolet Silverado - Control Module Communication Bus OFF - AutoCodes.com — U0073 2016 Chevrolet Silverado Code - Control Module Communication Bus OFF

What does this mean?

What are the Possible Causes of the DTC U0073 2016 Chevrolet Silverado?

Faulty Module/Device that is not communicating
Module/Device harness is open or shorted
Module/Device circuit poor electrical connection

How to Fix the DTC U0073 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 U0073 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 U0073 2016 Chevrolet Silverado code?

Need more information on how to fix the U0073 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0073 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 U0073 2016 Chevrolet Silverado Code

1. What does the OBDII code U0073 on a 2016 Chevrolet Silverado mean?

The U0073 code indicates a communication problem between control modules in the vehicle, specifically the Control Module Communication Bus OFF.

2. What are common symptoms of the U0073 code on a 2016 Chevrolet Silverado?

Common symptoms include the check engine light being illuminated, possible loss of communication with various vehicle systems, and in some cases, drivability issues.

3. What are the possible causes of the U0073 code on a 2016 Chevrolet Silverado?

Possible causes of the U0073 code include a faulty control module, wiring or connection issues, a defective communication module, or software malfunctions.

4. How can I diagnose the U0073 code on a 2016 Chevrolet Silverado?

Diagnosing the U0073 code typically involves using a diagnostic scanner to check for other related trouble codes, inspecting the wiring and connections for damage, and testing the control modules for proper communication.

5. Can I still drive my 2016 Chevrolet Silverado with the U0073 code present?

It is not recommended to drive the vehicle with the U0073 code present, as it can lead to further issues with vehicle systems and potentially affect drivability.

6. How can I repair the U0073 code on my 2016 Chevrolet Silverado?

Repairing the U0073 code may involve fixing any damaged wiring or connections, replacing faulty control modules, updating software, or reprogramming the communication modules.

7. Can a DIY enthusiast fix the U0073 code on a 2016 Chevrolet Silverado?

While some basic troubleshooting like checking connections can be done by a DIY enthusiast, diagnosing and repairing the U0073 code may require specialized equipment and expertise, so it's recommended to seek professional help.

8. Will resetting the trouble codes make the U0073 code disappear on a 2016 Chevrolet Silverado?

Resetting the trouble codes may temporarily clear the U0073 code, but if the underlying issue is not addressed, the code is likely to reappear once the vehicle is driven and the communication problem persists.

9. How much does it typically cost to repair the U0073 code on a 2016 Chevrolet Silverado?

The cost of repairing the U0073 code can vary depending on the specific cause of the issue, but it may involve diagnostic fees, parts replacement costs, and labor charges, potentially ranging from a few hundred to a thousand dollars.

10. Is the U0073 code a common issue in 2016 Chevrolet Silverado vehicles?

The U0073 code related to Control Module Communication Bus OFF is not uncommon in modern vehicles, including the 2016 Chevrolet Silverado, and can be triggered by various factors affecting communication between control modules.