AutoCodes – GMC – U240F GMC

U240F GMC Code - Transmission Range Control Module Lost Communication With EBCM On High Speed CAN Bus

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake 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: U240F GMC indicates Transmission Range Control Module Lost Communication With EBCM On High Speed CAN Bus.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 552

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 Jun 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U240F GMC Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices 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 device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. The Diagnostic Trouble Code (DTC) will set a supervised periodic message that includes the transmitter device availability that has not been received.

OBDII Code U240F GMC - Transmission Range Control Module Lost Communication With EBCM On High Speed CAN Bus - AutoCodes.com — U240F GMC Code - Transmission Range Control Module Lost Communication With EBCM On High Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U240F GMC?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module harness is open or shorted
Electronic Brake Control Module circuit poor electrical connection
Faulty Transmission Range Control Module

How to Fix the DTC U240F 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 U240F 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.

Need more information about the U240F GMC code?

Need more information on how to fix the U240F GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U240F 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 U240F GMC Code

1. What are the common symptoms of OBDII code U240F GMC?

Symptoms may include issues with shifting gears, transmission slipping, warning lights on the dashboard, and difficulty engaging the transmission.

2. What does the OBDII code U240F GMC indicate?

This code indicates that the Transmission Range Control Module has lost communication with the Electronic Brake Control Module (EBCM) on the high-speed Controller Area Network (CAN) bus.

3. What are the possible causes of code U240F GMC?

Possible causes include damaged wiring or connectors, a faulty Transmission Range Control Module, a malfunctioning EBCM, or issues with the CAN bus communication network.

4. How can I diagnose the U240F GMC code?

Diagnosis typically involves using an OBDII scanner to retrieve the code, checking for any additional codes present, inspecting wiring and connectors for damage, and testing the communication between modules on the CAN bus.

5. How can I repair OBDII code U240F GMC?

Repair options may include repairing or replacing damaged wiring or connectors, replacing the Transmission Range Control Module or EBCM if faulty, and ensuring proper communication on the CAN bus network.

6. Can driving with code U240F GMC cause further damage?

Continued driving with this code may lead to further transmission problems and potential safety hazards, so it is recommended to address the issue promptly.

7. Can I reset the code U240F GMC on my own?

You can clear the code with an OBDII scanner, but it is important to diagnose and repair the underlying issue causing the code to prevent it from reoccurring.

8. Is it safe to drive my vehicle with code U240F GMC?

It is not recommended to drive the vehicle with this code present, as it can affect the proper operation of the transmission and potentially compromise safety.

9. How much does it cost to fix OBDII code U240F GMC?

The cost of repairs can vary depending on the specific cause of the code, but it may involve the cost of parts and labor for diagnosing and fixing the issue.

10. Can I prevent OBDII code U240F GMC from occurring?

Regular maintenance, such as checking and maintaining wiring integrity, can help prevent issues that may lead to this code. Promptly addressing any warning signs can also help prevent this code from occurring.