AutoCodes – GMC – U026A GMC

U026A GMC Code - Lost Communication With Frontview Camera 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 Frontview Camera Module, Frontview Camera Module harness is open or shorted, Frontview Camera 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: U026A GMC indicates Lost Communication With Frontview Camera Module.
Common causes: Common causes include Faulty Frontview Camera Module, Frontview Camera Module harness is open or shorted, Frontview Camera 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 2,658

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 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U026A GMC 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 Frontview Camera Module has not been received.

OBDII Code U026A GMC - Lost Communication With Frontview Camera Module - AutoCodes.com — U026A GMC Code - Lost Communication With Frontview Camera Module

What does this mean?

What are the Possible Causes of the DTC U026A GMC?

Faulty Frontview Camera Module
Frontview Camera Module harness is open or shorted
Frontview Camera Module circuit poor electrical connection

How to Fix the DTC U026A 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 U026A 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 U026A GMC Code

1. What are the common symptoms of OBDII code U026A GMC (Lost Communication With Frontview Camera Module)?

- Common symptoms include the frontview camera not functioning, warning lights on the dashboard, and potential issues with advanced driver assistance systems.

2. What are the possible causes of OBDII code U026A GMC?

- Possible causes include a faulty frontview camera module, damaged wiring or connectors, software issues, or a communication error within the vehicle's network.

3. How can I diagnose the cause of OBDII code U026A GMC?

- Diagnosing this code typically involves checking the connections to the frontview camera module, inspecting the wiring for damage, and using a scan tool to analyze communication between the module and the vehicle's computer.

4. Can I still drive my vehicle with OBDII code U026A GMC present?

- It is generally safe to drive the vehicle with this code, but it is recommended to have the issue diagnosed and repaired as soon as possible to ensure proper functionality of the frontview camera system.

5. How can I repair OBDII code U026A GMC?

- Repairing this code may involve replacing the frontview camera module, repairing damaged wiring or connectors, updating software, or resetting the communication network within the vehicle.

6. Is it possible to reset OBDII code U026A GMC without replacing parts?

- In some cases, resetting the code by clearing it with a scan tool may temporarily resolve the issue. However, if the underlying cause is not addressed, the code is likely to reappear.

7. Can a DIY enthusiast fix OBDII code U026A GMC at home?

- While some basic troubleshooting steps can be performed at home, diagnosing and repairing this code may require specialized tools and expertise, making it more suitable for professional technicians.

8. How much does it typically cost to repair OBDII code U026A GMC?

- The cost of repairing this code can vary depending on the specific cause and the labor rates of the repair shop. It is advisable to obtain estimates from multiple sources before proceeding with the repair.

9. Will OBDII code U026A GMC affect my vehicle's performance?

- This code is more related to the frontview camera system and advanced driver assistance features rather than the overall performance of the vehicle. However, addressing the issue promptly is still recommended.

10. Is OBDII code U026A GMC a common issue in GMC vehicles?

- While it may not be as common as some other OBDII codes, issues related to lost communication with the frontview camera module can occur in GMC vehicles equipped with this feature.