AutoCodes – Chevrolet – U0073 2017 Chevrolet Silverado

U0073 2017 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 2017 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.

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Code Popularity 530

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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
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Code U0073 2017 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 2017 Chevrolet Silverado - Control Module Communication Bus OFF - AutoCodes.com — U0073 2017 Chevrolet Silverado Code - Control Module Communication Bus OFF

What does this mean?

What are the Possible Causes of the DTC U0073 2017 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 2017 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 2017 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 2017 Chevrolet Silverado code?

Need more information on how to fix the U0073 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2017 Chevrolet Silverado Code

1. What is the meaning of OBDII code U0073 on a 2017 Chevrolet Silverado?

- The code U0073 indicates a communication bus off error within the control module network of the vehicle.

2. What are the common symptoms of U0073 on a 2017 Chevrolet Silverado?

- Common symptoms of U0073 may include loss of communication with various control modules, warning lights on the dashboard, and potential drivability issues.

3. What are some possible causes of U0073 on a 2017 Chevrolet Silverado?

- Potential causes of U0073 can include damaged wiring or connectors, faulty control modules, software glitches, or issues with the communication network.

4. How can I diagnose the U0073 code on my 2017 Chevrolet Silverado?

- To diagnose U0073, a professional diagnostic scan tool is typically required to communicate with the vehicle's control modules and identify the specific module causing the communication bus off error.

5. What are some repair tips for fixing the U0073 code on a 2017 Chevrolet Silverado?

- Repair tips for U0073 may involve checking and repairing any damaged wiring or connectors, updating control module software, or replacing faulty control modules as needed.

6. Can I drive my 2017 Chevrolet Silverado with the U0073 code present?

- It is not recommended to drive the vehicle with the U0073 code present, as it can potentially lead to further issues with the vehicle's control systems.

7. Is it safe to clear the U0073 code on my 2017 Chevrolet Silverado using an OBDII scanner?

- Clearing the U0073 code with an OBDII scanner may temporarily remove the warning lights, but it is important to address the underlying cause of the communication bus off error to prevent it from reoccurring.

8. How much does it typically cost to repair the U0073 code on a 2017 Chevrolet Silverado?

- The cost of repairing the U0073 code can vary depending on the specific cause of the issue, but it may involve labor costs for diagnostics and repairs, as well as potential parts replacement.

9. Can a DIY enthusiast fix the U0073 code on a 2017 Chevrolet Silverado?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the U0073 code often requires specialized tools and expertise, making it more suitable for professional mechanics.

10. Are there any recalls or technical service bulletins related to the U0073 code on a 2017 Chevrolet Silverado?

- It is advisable to check with Chevrolet dealerships or online resources for any related recalls or technical service bulletins that may address the U0073 code on the 2017 Silverado.