AutoCodes – GMC – U1501 GMC

U1501 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: U1501 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 15,825

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 U1501 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 U1501 GMC - Local Interconnect Network Bus Failure - AutoCodes.com — U1501 GMC Code - Local Interconnect Network Bus Failure

What does this mean?

What are the Possible Causes of the DTC U1501 GMC?

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

How to Fix the DTC U1501 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 U1501 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 U1501 GMC Code

1. What are the common symptoms of OBDII code U1501 GMC (Local Interconnect Network Bus Failure)?

- Common symptoms include issues with various vehicle systems like the instrument cluster, airbags, ABS, and other modules not communicating properly.

2. What are some potential causes of U1501 GMC code?

- Possible causes include a faulty local interconnect network (LIN) bus, damaged wiring, loose connections, or issues with the control modules on the LIN bus.

3. How can I diagnose a U1501 GMC code?

- Diagnosing the U1501 code typically involves using a scan tool to check for other related codes, inspecting the LIN bus wiring for damage, and testing the communication between modules.

4. Can a DIYer repair a U1501 GMC code?

- Repairing a U1501 code may require advanced diagnostic tools and knowledge, so it's recommended to consult a professional mechanic to accurately diagnose and fix the issue.

5. Are there any common fixes for a U1501 GMC code?

- Common fixes may include repairing or replacing damaged wiring on the LIN bus, ensuring all connections are secure, and reprogramming or replacing faulty control modules.

6. Is it safe to continue driving with a U1501 GMC code present?

- It's not recommended to drive with a U1501 code present as it can impact the functionality of various critical vehicle systems, leading to potential safety hazards.

7. How much does it typically cost to repair a U1501 GMC code?

- The cost of repairing a U1501 code can vary depending on the underlying issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Can a U1501 GMC code be intermittent?

- Yes, a U1501 code can sometimes be intermittent, leading to sporadic issues with communication between modules on the LIN bus.

9. Will disconnecting the battery reset a U1501 GMC code?

- Disconnecting the battery may clear the code temporarily, but it's important to address the root cause of the issue to prevent the code from reappearing.

10. How long does it typically take to repair a U1501 GMC code?

- The repair time for a U1501 code can vary based on the specific cause and complexity of the issue, but it may take a few hours to a full day to diagnose and fix the problem thoroughly.