AutoCodes – GMC – U0405 GMC

U0405 GMC Code - Invalid Data Received From Cruise Control Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Cruise Control Module, Cruise Control Module harness is open or shorted, Cruise 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: U0405 GMC indicates Invalid Data Received From Cruise Control Module.
Common causes: Common causes include Faulty Cruise Control Module, Cruise Control Module harness is open or shorted, Cruise 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 706

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 Apr 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0405 GMC Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Cruise Control Module causing its integrity to be questioned.

OBDII Code U0405 GMC - Invalid Data Received From Cruise Control Module - AutoCodes.com — U0405 GMC Code - Invalid Data Received From Cruise Control Module

What does this mean?

What are the Possible Causes of the DTC U0405 GMC?

Faulty Cruise Control Module
Cruise Control Module harness is open or shorted
Cruise Control Module circuit poor electrical connection

How to Fix the DTC U0405 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 U0405 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 U0405 GMC code?

Need more information on how to fix the U0405 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0405 GMC code diagnosed by a professional: Find a repair shop in your area

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 U0405 GMC Code

1. What are common symptoms of the U0405 OBDII code in a GMC vehicle?

- Common symptoms include the cruise control system not working, the cruise control light flashing, and potential issues with the vehicle's speed control.

2. What causes the U0405 OBDII code to trigger in a GMC vehicle?

- The U0405 code is triggered when the engine control module (ECM) detects invalid data from the cruise control module, indicating a communication issue between the modules.

3. How can I diagnose the U0405 code in my GMC vehicle?

- Diagnosing the U0405 code typically involves using a diagnostic scanner to retrieve the code and then inspecting the cruise control module, wiring, and connections for any faults or damage.

4. Can I still drive my GMC vehicle with the U0405 code present?

- While it may be safe to drive with the U0405 code, it is recommended to address the issue promptly to prevent any potential loss of cruise control functionality or other related problems.

5. Is it possible to repair the U0405 code in a GMC vehicle without professional help?

- Repairing the U0405 code may require advanced diagnostic tools and knowledge of automotive electronics, so it is recommended to seek professional help to accurately diagnose and fix the issue.

6. Will resetting the U0405 code make it go away permanently?

- Resetting the U0405 code may temporarily clear the fault, but if the underlying issue causing the code is not resolved, it is likely to reappear after driving the vehicle again.

7. Are there any common DIY fixes for the U0405 code in a GMC vehicle?

- DIY fixes for the U0405 code may include checking and cleaning the cruise control module connections, inspecting the wiring harness for damage, and ensuring all related components are properly connected.

8. How much does it typically cost to repair the U0405 code in a GMC vehicle?

- The cost of repairing the U0405 code can vary depending on the underlying cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic services.

9. Can the U0405 code be related to other issues in a GMC vehicle?

- The U0405 code is specifically related to communication problems with the cruise control module, but it is possible for related issues to affect other vehicle systems or performance.

10. Is it necessary to have the U0405 code fixed immediately in a GMC vehicle?

- While immediate action may not be critical, addressing the U0405 code promptly can help prevent further complications and ensure the proper functioning of the cruise control system.