AutoCodes – Chevrolet – U0106 Chevrolet

U0106 Chevrolet Code - Lost Communication With Glow Plug Control Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Glow Plug Control Module, Glow Plug Control Module harness is open or shorted, Glow Plug 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: U0106 Chevrolet indicates Lost Communication With Glow Plug Control Module.
Common causes: Common causes include Faulty Glow Plug Control Module, Glow Plug Control Module harness is open or shorted, Glow Plug 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 2,359

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 Mar 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0106 Chevrolet Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Glow Plug Control Module has not been received.

OBDII Code U0106 Chevrolet - Lost Communication With Glow Plug Control Module - AutoCodes.com — U0106 Chevrolet Code - Lost Communication With Glow Plug Control Module

What does this mean?

What are the Possible Causes of the DTC U0106 Chevrolet?

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

How to Fix the DTC U0106 Chevrolet?

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 U0106 Chevrolet 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 U0106 Chevrolet Code

1. What does the OBDII code U0106 mean on a Chevrolet?

The U0106 code indicates a "Lost Communication With Glow Plug Control Module," meaning the vehicleâ€™s main computer cannot communicate with the glow plug control module.

2. What are common symptoms of the U0106 code in a Chevrolet?

Symptoms may include difficulty starting the engine (especially in cold weather), reduced engine performance, a glowing check engine light, or no noticeable symptoms at all.

3. What causes the U0106 code to appear in a Chevrolet?

Common causes include a faulty glow plug control module, damaged wiring or connectors, a blown fuse, or issues with the CAN bus communication network.

4. Can I drive my Chevrolet with the U0106 code present?

While the vehicle may still drive, it may have reduced performance or starting issues, particularly in cold conditions. Itâ€™s best to address the issue promptly to avoid further complications.

5. How do I diagnose the U0106 code on my Chevrolet?

Start by checking the glow plug control module, inspecting wiring and connectors for damage, and testing fuses. A professional scan tool can verify communication between the module and the ECM.

6. What is the glow plug control moduleâ€™s role in a Chevrolet?

The glow plug control module manages the glow plugs, which preheat the engine cylinders in diesel engines to assist with starting in cold conditions.

7. How can I fix the U0106 code on my Chevrolet?

Repairs may involve replacing the glow plug control module, repairing damaged wiring, reconnecting loose connectors, or addressing CAN bus communication issues.

8. How much does it cost to fix a U0106 code on a Chevrolet?

The repair cost can range from $150 to $600, depending on whether the module, wiring, or other components need replacement or repair.

9. Can a software update fix the U0106 code on a Chevrolet?

In some cases, a software update to the ECM or glow plug control module may resolve communication issues, but this depends on the specific vehicle and circumstances.

10. How can I prevent the U0106 code from recurring in my Chevrolet?

Regular maintenance, inspecting wiring for damage, keeping connections clean, and promptly addressing communication issues can help prevent this code from returning.