AutoCodes – Chevrolet – U0029 2017 Chevrolet Silverado

U0029 2017 Chevrolet Silverado Code - Media Oriented Systems Transport Bus Performance

Quick Answer

The Media Oriented Systems Transport (MOST) bus consists of a physical ring in which multimedia devices share audio, video and infotainment system control data. Common causes include Faulty Audio Unit (Radio), Audio Unit harness is open or shorted, Audio Unit 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: U0029 2017 Chevrolet Silverado indicates Media Oriented Systems Transport Bus Performance.
Common causes: Common causes include Faulty Audio Unit (Radio), Audio Unit harness is open or shorted, Audio Unit 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 324

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
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0029 2017 Chevrolet Silverado Description

The Media Oriented Systems Transport (MOST) bus consists of a physical ring in which multimedia devices share audio, video and infotainment system control data. Each device on the MOST bus transmits and receives data via the MOST Bus Serial Data (+/- transmit/receive) circuits. The MOST bus diagnostic master is the Radio. The MOST control circuit is connected to each device on the MOST bus. Each device provides a 12 V signal on the MOST control circuit. The Radio initiates communication on the MOST bus at Ignition ON by toggling the MOST control circuit low for 100 ms. Once each device recognizes the wakeup signal from the Radio on the MOST control circuit, they will respond to the Radio on the MOST bus to indicate no faults are present and normal communications will commence. The MOST bus master device shall set DTC U0029 when the MOST bus interruptions last long enough to interrupt MOST communication and functions, but not long enough to break the MOST bus ring. A current Diagnostic Trouble Code (DTC) sets when MOST bus communication has been interrupted more than 10 times during the monitoring cycle period.

OBDII Code U0029 2017 Chevrolet Silverado - Media Oriented Systems Transport Bus Performance - AutoCodes.com — U0029 2017 Chevrolet Silverado Code - Media Oriented Systems Transport Bus Performance

What does this mean?

What are the Possible Causes of the DTC U0029 2017 Chevrolet Silverado?

Faulty Audio Unit (Radio)
Audio Unit harness is open or shorted
Audio Unit circuit poor electrical connection

How to Fix the DTC U0029 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 U0029 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 U0029 2017 Chevrolet Silverado code?

Need more information on how to fix the U0029 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 U0029 2017 Chevrolet Silverado Code

1. What does the OBDII code U0029 for a 2017 Chevrolet Silverado indicate?

The U0029 code on a 2017 Chevrolet Silverado relates to Media Oriented Systems Transport (MOST) Bus Performance.

2. What are common symptoms of the U0029 code in a 2017 Chevrolet Silverado?

Common symptoms may include issues with the vehicle's multimedia systems, such as the radio, navigation, or other entertainment features.

3. What can cause the U0029 code to appear in a 2017 Chevrolet Silverado?

The U0029 code in a 2017 Chevrolet Silverado can be triggered by a faulty MOST bus communication network, damaged wiring, or a defective control module.

4. How do I diagnose the U0029 code in a 2017 Chevrolet Silverado?

Diagnosing the U0029 code typically involves checking the MOST bus network for any faults, inspecting the wiring for damage, and testing the control modules for proper functioning.

5. Can I still drive my 2017 Chevrolet Silverado with the U0029 code present?

While it may be possible to drive the vehicle with the U0029 code, it is recommended to address the issue promptly to prevent any further damage to the vehicle's multimedia systems.

6. How can I repair the U0029 code in my 2017 Chevrolet Silverado?

Repairing the U0029 code may involve repairing or replacing damaged wiring, reprogramming control modules, or addressing any issues with the MOST bus network.

7. Is it necessary to reset the U0029 code after repairing a 2017 Chevrolet Silverado?

Yes, it is recommended to clear the U0029 trouble code after completing repairs to see if the issue has been resolved and to turn off the check engine light.

8. Can a DIY enthusiast fix the U0029 code issue in a 2017 Chevrolet Silverado?

While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing the U0029 code may require specialized tools and expertise, so it's best to consult a professional mechanic.

9. How much does it cost to repair the U0029 code in a 2017 Chevrolet Silverado?

The cost of repairing the U0029 code can vary depending on the underlying cause of the issue, the extent of the repairs needed, and the labor rates of the repair shop.

10. How can I prevent the U0029 code from reoccurring in my 2017 Chevrolet Silverado?

To prevent the U0029 code from reoccurring, regular maintenance of the vehicle's communication systems, such as checking for loose connections and ensuring proper wiring, can help avoid future issues.