AutoCodes – Chevrolet – U0252 Chevrolet

U0252 Chevrolet Code - Lost Communication With Trailer Interface 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 Trailer Interface Control Module, Trailer Interface Control Module harness is open or shorted, Trailer Interface 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
U0252 Chevrolet indicates Lost Communication With Trailer Interface Control Module.
Common causes
Common causes include Faulty Trailer Interface Control Module, Trailer Interface Control Module harness is open or shorted, Trailer Interface 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,916
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 05, 2020
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Code U0252 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 Trailer Interface Control Module has not been received.
OBDII Code U0252 Chevrolet - Lost Communication With Trailer Interface Control Module - AutoCodes.com
U0252 Chevrolet Code - Lost Communication With Trailer Interface Control Module

What are the Possible Causes of the DTC U0252 Chevrolet?

  • Faulty Trailer Interface Control Module
  • Trailer Interface Control Module harness is open or shorted
  • Trailer Interface Control Module circuit poor electrical connection

How to Fix the DTC U0252 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 U0252 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.

Need more information about the U0252 Chevrolet code?

Need more information on how to fix the U0252 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0252 Chevrolet 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 U0252 Chevrolet Code

1. What are the common symptoms of OBDII code U0252 in a Chevrolet related to the "Lost Communication With Trailer Interface Control Module" issue?

- Common symptoms may include loss of communication with the trailer brake system, trailer lights not functioning properly, and potential issues with trailer stability control.

2. What are some possible causes of OBDII code U0252 in a Chevrolet indicating a communication problem with the Trailer Interface Control Module?

- Possible causes may include a faulty trailer interface control module, damaged wiring or connectors between the vehicle and the trailer, or issues with the vehicle's electronic control module.

3. How can I diagnose the OBDII code U0252 in a Chevrolet to confirm the "Lost Communication With Trailer Interface Control Module" error?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault codes, checking the connections between the vehicle and the trailer, and testing the trailer interface control module for proper functioning.

4. Is it safe to continue driving a Chevrolet with the OBDII code U0252 indicating a lost communication with the Trailer Interface Control Module?

- It is not recommended to continue driving the vehicle with this issue, as it can affect the proper functioning of the trailer brake system and other important safety features related to towing.

5. What are some repair tips for addressing the OBDII code U0252 in a Chevrolet associated with the Trailer Interface Control Module communication problem?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the trailer interface control module if necessary, and ensuring all connections are secure and functioning properly.

6. Can a DIY enthusiast fix the OBDII code U0252 related to the lost communication with the Trailer Interface Control Module in a Chevrolet?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, resolving the issue may require specialized tools and expertise, so it is recommended to consult a professional mechanic for proper diagnosis and repair.

7. Will clearing the OBDII code U0252 in a Chevrolet resolve the lost communication with the Trailer Interface Control Module issue?

- Clearing the code may temporarily turn off the warning light, but it will not fix the underlying communication problem with the Trailer Interface Control Module. Proper diagnosis and repair are necessary to address the issue effectively.

8. Are there any recalls or technical service bulletins related to the OBDII code U0252 in Chevrolet vehicles experiencing a communication problem with the Trailer Interface Control Module?

- It is advisable to check with a Chevrolet dealership or the manufacturer's website for any recalls or technical service bulletins related to this specific OBDII code to see if there are any known issues or remedies available.

9. How can I prevent the recurrence of the OBDII code U0252 indicating a lost communication with the Trailer Interface Control Module in my Chevrolet?

- Regularly inspecting and maintaining the trailer wiring and connections, ensuring proper trailer setup and compatibility, and addressing any warning lights or issues promptly can help prevent the recurrence of this communication problem.

10. Can the OBDII code U0252 be triggered in a Chevrolet without actually towing a trailer?

- Yes, the code can still be triggered even if a trailer is not being towed, as it may indicate a communication problem between the vehicle's electronic systems and the Trailer Interface Control Module.

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