AutoCodes – GMC – U15F3 GMC

U15F3 GMC Code - Human Machine Interface Control Module Lost Communication With Navigation Control Module On LIN Bus

Quick Answer

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. Common causes include Faulty Navigation Control Module, Navigation Control Module harness is open or shorted, Navigation 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: U15F3 GMC indicates Human Machine Interface Control Module Lost Communication With Navigation Control Module On LIN Bus.
Common causes: Common causes include Faulty Navigation Control Module, Navigation Control Module harness is open or shorted, Navigation 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 517

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 Jun 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U15F3 GMC Description

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. The serial data is transmitted over a LIN circuit between a master control module and other LIN devices within a particular subsystem. If serial data communication is lost between any of the LIN devices on the LIN bus network, the master control module will set a no communication code against the non-communicating LIN device. The Diagnostic Trouble Code (DTC) will set when a supervised periodic message to the Human Machine Interface Control Module from the Navigation Control Module has not been received.

OBDII Code U15F3 GMC - Human Machine Interface Control Module Lost Communication With Navigation Control Module On LIN Bus - AutoCodes.com — U15F3 GMC Code - Human Machine Interface Control Module Lost Communication With Navigation Control Module On LIN Bus

What does this mean?

What are the Possible Causes of the DTC U15F3 GMC?

Faulty Navigation Control Module
Navigation Control Module harness is open or shorted
Navigation Control Module circuit poor electrical connection
Faulty Human Machine Interface Control Module

How to Fix the DTC U15F3 GMC?

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 U15F3 GMC 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 U15F3 GMC code?

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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 U15F3 GMC Code

1. What are common symptoms of OBDII code U15F3 GMC?

- Common symptoms include loss of communication between the Human Machine Interface Control Module and the Navigation Control Module, leading to issues with navigation system functionality and display.

2. What does the OBDII code U15F3 GMC indicate?

- The code U15F3 indicates that there is a communication problem between the Human Machine Interface Control Module and the Navigation Control Module on the LIN bus.

3. What are possible causes of the U15F3 GMC code?

- Potential causes include wiring or connection issues between the modules, a faulty Human Machine Interface Control Module or Navigation Control Module, or a problem with the LIN bus communication network.

4. How can I diagnose the U15F3 GMC code?

- Diagnosing this code typically involves inspecting the wiring and connections between the modules, checking for any visible damage, and using a diagnostic tool to analyze the communication network.

5. Can I still drive my vehicle with the U15F3 GMC code present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to avoid potential navigation system malfunctions or other related problems.

6. How can I repair the U15F3 GMC code?

- Repairing this code may involve repairing or replacing faulty wiring, connectors, or modules, as well as ensuring proper communication on the LIN bus network.

7. Is it necessary to reset the code after repairing the U15F3 GMC issue?

- Yes, it is recommended to clear the code using a diagnostic tool after repairing the communication problem between the Human Machine Interface Control Module and the Navigation Control Module.

8. Can a DIY enthusiast fix the U15F3 GMC code?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing this code may require advanced diagnostic tools and technical knowledge, so seeking professional assistance is recommended.

9. How common is the U15F3 GMC code in GMC vehicles?

- The U15F3 code related to communication issues between the Human Machine Interface Control Module and the Navigation Control Module is relatively common in certain GMC vehicles equipped with these components.

10. Will the U15F3 GMC code cause my vehicle to fail an emissions test?

- The U15F3 code itself is not directly related to emissions, so it should not cause your vehicle to fail an emissions test. However, resolving the underlying communication issue is still important for overall vehicle functionality.