AutoCodes – GMC – U023A GMC

U023A GMC Code - Lost Communication With Vehicle Direction Camera 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 Vehicle Direction Camera Control Module, Vehicle Direction Camera Control Module harness is open or shorted, Vehicle Direction Camera 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: U023A GMC indicates Lost Communication With Vehicle Direction Camera Control Module.
Common causes: Common causes include Faulty Vehicle Direction Camera Control Module, Vehicle Direction Camera Control Module harness is open or shorted, Vehicle Direction Camera 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 2,510

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 U023A 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 Vehicle Direction Camera Control Module has not been received.

OBDII Code U023A GMC - Lost Communication With Vehicle Direction Camera Control Module - AutoCodes.com — U023A GMC Code - Lost Communication With Vehicle Direction Camera Control Module

What does this mean?

What are the Possible Causes of the DTC U023A GMC?

Faulty Vehicle Direction Camera Control Module
Vehicle Direction Camera Control Module harness is open or shorted
Vehicle Direction Camera Control Module circuit poor electrical connection

How to Fix the DTC U023A 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 U023A 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 U023A GMC Code

1. What are the common symptoms of OBDII code U023A GMC?

The common symptoms of code U023A GMC include loss of communication with the vehicle's direction camera control module, causing issues with the camera system and potentially affecting the vehicle's safety features.

2. What are the possible causes of OBDII code U023A GMC?

The possible causes of code U023A GMC include wiring or connection issues, a faulty direction camera control module, software glitches, or a problem with the vehicle's network communication system.

3. How can I diagnose the underlying issue causing code U023A GMC?

Diagnosing the issue typically involves checking the wiring and connections related to the direction camera control module, performing a scan tool diagnostic to assess the communication status, and testing the module for proper functionality.

4. Can code U023A GMC be fixed by resetting the vehicle's computer?

While resetting the vehicle's computer may temporarily clear the code, it is important to address the underlying issue causing the communication loss with the direction camera control module to prevent the code from reoccurring.

5. Is it safe to drive with OBDII code U023A GMC active?

It is not recommended to drive with code U023A GMC active, as it may affect the proper functioning of the vehicle's safety features and camera system. It is advisable to address the issue promptly to ensure the vehicle is operating correctly.

6. Are there any DIY repair tips for resolving OBDII code U023A GMC?

DIY repair tips for code U023A GMC may include checking and repairing any damaged wiring or connections, ensuring the direction camera control module is securely connected, and resetting the system to see if the code clears.

7. Can a professional mechanic help fix OBDII code U023A GMC?

Yes, a professional mechanic with experience in diagnosing and repairing communication issues with vehicle modules can help identify the root cause of code U023A GMC and perform the necessary repairs or replacements.

8. How much does it typically cost to repair OBDII code U023A GMC?

The cost of repairing code U023A GMC can vary depending on the underlying issue, the need for replacement parts, and the labor involved. It is advisable to consult with a mechanic for an accurate cost estimate.

9. Will ignoring OBDII code U023A GMC cause further damage to the vehicle?

Ignoring code U023A GMC may lead to further malfunctions in the vehicle's camera system and safety features, potentially compromising the overall performance and safety of the vehicle. It is best to address the issue promptly.

10. Can extreme weather conditions trigger OBDII code U023A GMC?

Extreme weather conditions, such as excessive heat or moisture, can sometimes affect the wiring and connections related to the direction camera control module, potentially leading to communication issues and triggering code U023A GMC.