Engine-Codes.com
Engine-Codes – GMC – U1166 GMC

U1166 GMC Code - Lost Communications With Driver Seat Module

Quick Answer

The U1166 GMC code indicates that there is a communication error between the vehicle's onboard computer system and the driver seat module. Common causes include Loose or corroded wiring connections between the vehicle's computer system and the driver seat module, A malfunctioning driver seat module, Software glitch in the vehicle's computer system. 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
U1166 GMC indicates Lost Communications With Driver Seat Module.
Common causes
Common causes include Loose or corroded wiring connections between the vehicle's computer system and the driver seat module, A malfunctioning driver seat module, Software glitch in the vehicle's computer system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code U1166 GMC Description

The U1166 GMC code indicates that there is a communication error between the vehicle's onboard computer system and the driver seat module. The driver seat module is responsible for controlling various functions related to the driver's seat, such as adjusting the seat position, controlling seat heaters, and managing seat memory settings. When communication is lost with the driver seat module, it can lead to issues with the functionality of the driver's seat and potentially affect other vehicle systems.

OBDII Code U1166 GMC - Lost Communications With Driver Seat Module
U1166 GMC Code - Lost Communications With Driver Seat Module

Common Causes of U1166 GMC

  1. Loose or corroded wiring connections between the vehicle's computer system and the driver seat module.
  2. A malfunctioning driver seat module.
  3. Software glitch in the vehicle's computer system.
  4. Electrical issues within the vehicle's wiring harness.
  5. Water damage or exposure to moisture affecting the driver seat module.

Symptoms of U1166 GMC

  1. Inability to adjust the driver's seat position.
  2. Loss of functionality for seat heaters.
  3. Error messages related to the driver seat module on the dashboard.
  4. Malfunctioning seat memory settings.

How to Fix U1166 GMC

  1. Begin by conducting a thorough inspection of the wiring connections between the vehicle's computer system and the driver seat module. Ensure all connections are secure and free of corrosion.
  2. Use a diagnostic tool to reset the communication between the two systems and clear the U1166 code.
  3. If the issue persists, consider replacing the driver seat module with a new one.
  4. Check for any software updates for the vehicle's computer system that may address communication errors with the driver seat module.
  5. Test the functionality of the driver's seat, seat heaters, and seat memory settings to ensure the issue has been resolved.

Cost to Fix U1166 GMC

The typical repair costs for addressing a U1166 GMC code can vary depending on the specific cause of the communication error. In general, replacing a driver seat module can range from $200 to $500, including parts and labor. However, additional diagnostic time and labor costs may apply, with hourly rates typically ranging from $80 to $150. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.

Need more information about the U1166 GMC code?

Need more information on how to fix the U1166 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1166 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 U1166 GMC Code

1. What are the common symptoms of OBDII code U1166 GMC?

The common symptoms of code U1166 GMC include malfunctioning power seat controls, inoperative memory settings, and warning lights on the dashboard.

2. What are the possible causes of OBDII code U1166 GMC?

The possible causes of code U1166 GMC include a faulty driver seat module, wiring issues, loose connections, or a communication breakdown between the module and the vehicle's onboard computer.

3. How can I diagnose the root cause of OBDII code U1166 GMC?

Diagnosing code U1166 GMC involves using a diagnostic scanner to retrieve the specific details of the error code, inspecting the wiring and connections related to the driver seat module, and testing the module itself for proper functionality.

4. Can I still drive my vehicle with OBDII code U1166 GMC?

It is generally safe to drive your vehicle with code U1166 GMC, but it is recommended to address the underlying issue promptly to prevent any further damage or inconvenience.

5. How can I repair OBDII code U1166 GMC?

To repair code U1166 GMC, you may need to replace the driver seat module, repair any damaged wiring or connections, reset the error code with a diagnostic scanner, and perform a system check to ensure proper communication between the module and the vehicle's computer.

6. Is it possible to reset OBDII code U1166 GMC without fixing the underlying issue?

While you can reset the error code temporarily, it is important to address the underlying issue causing code U1166 GMC to prevent the problem from recurring.

7. Can a DIY enthusiast fix OBDII code U1166 GMC at home?

Depending on your automotive repair skills, you may be able to fix code U1166 GMC at home by following repair guides, using the right tools, and being cautious with electrical components.

8. Will fixing OBDII code U1166 GMC be expensive?

The cost of fixing code U1166 GMC can vary depending on the root cause of the issue, the need for replacement parts, and whether you choose to do the repairs yourself or take your vehicle to a professional mechanic.

9. Are there any preventative measures to avoid OBDII code U1166 GMC in the future?

To prevent code U1166 GMC from occurring in the future, it is advisable to regularly inspect the driver seat module, maintain proper electrical connections, and address any issues promptly to avoid communication breakdowns.

10. How long does it typically take to repair OBDII code U1166 GMC?

The repair time for code U1166 GMC can vary based on the complexity of the issue, the availability of replacement parts, and whether you are doing the repairs yourself or seeking assistance from a professional technician.

Discuss the causes and fixes for U1166 GMC OBDII Code

Submit a New Comment

Code U1166 GMC comments

No comments found for this page.