AutoCodes – GMC – U1500 GMC

U1500 GMC Code - Local Interconnect Network Bus Failure

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 Module that is not communicating, Module harness is open or shorted, 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: U1500 GMC indicates Local Interconnect Network Bus Failure.
Common causes: Common causes include Faulty Module that is not communicating, Module harness is open or shorted, 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 3,175

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 May 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1500 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 that includes the transmitter device availability has not been received.

OBDII Code U1500 GMC - Local Interconnect Network Bus Failure - AutoCodes.com — U1500 GMC Code - Local Interconnect Network Bus Failure

What does this mean?

What are the Possible Causes of the DTC U1500 GMC?

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

How to Fix the DTC U1500 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 U1500 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.

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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 U1500 GMC Code

1. What are the common symptoms of U1500 GMC code?

The common symptoms of U1500 GMC code include issues with the vehicle's communication system, such as loss of communication between modules, dashboard warning lights illuminating, and possible loss of certain vehicle functions.

2. What are the possible causes of U1500 GMC code?

The U1500 GMC code, indicating a Local Interconnect Network Bus Failure, can be caused by damaged wiring or connectors, faulty modules, a short circuit in the network bus, or a software issue within the vehicle's control modules.

3. How can I diagnose U1500 GMC code?

Diagnosing the U1500 GMC code involves using an OBDII scanner to read and interpret the code, checking the network bus wiring and connectors for damage, testing the control modules for functionality, and verifying the software versions in the modules.

4. Can I drive my vehicle with the U1500 GMC code?

It is not recommended to drive your vehicle with the U1500 GMC code present, as it can affect the communication between critical systems in the vehicle, potentially leading to safety hazards or further damage.

5. How can I repair U1500 GMC code?

Repairing the U1500 GMC code involves addressing the root cause of the Local Interconnect Network Bus Failure, which may include repairing or replacing damaged wiring, connectors, or modules, as well as updating software in the control modules.

6. Is it safe to clear the U1500 GMC code without fixing the underlying issue?

Clearing the U1500 GMC code without fixing the underlying issue is not recommended, as the problem will likely persist and could lead to more severe issues in the future. It is crucial to address the root cause of the code to ensure the vehicle's proper functionality.

7. How much does it cost to repair U1500 GMC code?

The cost of repairing the U1500 GMC code can vary depending on the extent of the damage and the specific components that need to be repaired or replaced. It is recommended to consult with a professional mechanic for an accurate cost estimate.

8. Can a DIY enthusiast fix the U1500 GMC code?

While some DIY enthusiasts may have the skills to diagnose and repair the U1500 GMC code, it is a complex issue that often requires specialized tools and knowledge. It is advisable to seek assistance from a qualified mechanic for proper diagnosis and repair.

9. Will the U1500 GMC code cause my vehicle to fail an emissions test?

The U1500 GMC code itself may not cause your vehicle to fail an emissions test, but it indicates a problem with the vehicle's communication system that should be addressed to ensure proper emissions control and overall vehicle performance.

10. How long does it take to repair U1500 GMC code?

The time required to repair the U1500 GMC code can vary depending on the specific cause of the issue and the complexity of the repair process. Some repairs may be completed in a few hours, while others may take longer if multiple components need to be addressed.