AutoCodes – GMC – U019E GMC

U019E GMC Code - Lost Communication With Transmission Range 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 Transmission Range Control Module, Transmission Range Control Module harness is open or shorted, Transmission Range 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: U019E GMC indicates Lost Communication With Transmission Range Control Module.
Common causes: Common causes include Faulty Transmission Range Control Module, Transmission Range Control Module harness is open or shorted, Transmission Range 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 622

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 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U019E 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 Transmission Range Control Module has not been received.

OBDII Code U019E GMC - Lost Communication With Transmission Range Control Module - AutoCodes.com — U019E GMC Code - Lost Communication With Transmission Range Control Module

What does this mean?

What are the Possible Causes of the DTC U019E GMC?

Faulty Transmission Range Control Module
Transmission Range Control Module harness is open or shorted
Transmission Range Control Module circuit poor electrical connection

How to Fix the DTC U019E 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 U019E 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 U019E GMC Code

1. What are the common symptoms of OBDII code U019E GMC?

- Common symptoms include transmission shifting issues, inability to shift gears, dashboard warning lights related to the transmission, and potential stalling of the vehicle.

2. What could cause the OBDII code U019E GMC to appear?

- The code may appear due to a poor electrical connection, damaged wiring harness, a malfunctioning transmission range control module, or issues with the CAN (Controller Area Network) bus communication system.

3. How can I diagnose the cause of the U019E code?

- Diagnosing the U019E code requires using a professional OBDII scanner to retrieve the specific details of the code, checking the connections and wiring related to the transmission range control module, and testing the module itself for faults.

4. Can I continue driving my vehicle with the U019E code present?

- It is not recommended to drive your vehicle with the U019E code present, as it can lead to further transmission problems and potentially unsafe driving conditions. It is advised to address the issue promptly.

5. What are some repair tips for fixing the U019E code?

- Repair tips include checking and repairing any damaged wiring, ensuring proper connections to the transmission range control module, and potentially replacing the module if it is found to be faulty.

6. Is the U019E code a serious issue that requires immediate attention?

- Yes, the U019E code is a serious issue that should be addressed promptly to prevent further damage to the transmission system and ensure the safety and reliability of the vehicle.

7. Can a DIY enthusiast fix the U019E code, or is professional help necessary?

- While some basic checks and repairs can be done by a DIY enthusiast, diagnosing and repairing the U019E code may require specialized tools and expertise, so seeking professional help is often recommended.

8. How much does it typically cost to repair the U019E code?

- The cost of repairing the U019E code can vary depending on the underlying cause of the issue, the extent of the repairs needed, and whether any parts need to be replaced. It is recommended to obtain a few quotes from different mechanics for an accurate estimate.

9. Are there any preventive measures to avoid the U019E code in the future?

- Regularly inspecting and maintaining the transmission system, ensuring all electrical connections are secure, and addressing any warning signs of transmission issues promptly can help prevent the occurrence of the U019E code in the future.

10. Can resetting the OBDII system clear the U019E code permanently?

- Resetting the OBDII system may temporarily clear the U019E code, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and fix the root cause of the problem for a permanent solution.