AutoCodes – GMC – U2111 GMC

U2111 GMC Code - Lost Communication With Steering Control System

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Steering Control System Module, Steering Control System Module harness is open or shorted, Steering Control System 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: U2111 GMC indicates Lost Communication With Steering Control System.
Common causes: Common causes include Faulty Steering Control System Module, Steering Control System Module harness is open or shorted, Steering Control System 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 761

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 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2111 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. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U2111 GMC - Lost Communication With Steering Control System - AutoCodes.com — U2111 GMC Code - Lost Communication With Steering Control System

What does this mean?

What are the Possible Causes of the DTC U2111 GMC?

Faulty Steering Control System Module
Steering Control System Module harness is open or shorted
Steering Control System Module circuit poor electrical connection

How to Fix the DTC U2111 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 U2111 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 U2111 GMC code?

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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 U2111 GMC Code

1. What are the common symptoms of OBDII code U2111 in a GMC vehicle?

- Common symptoms include loss of power steering functionality, warning lights such as the ABS or traction control lights coming on, and possible difficulty steering the vehicle.

2. What are the possible causes of the U2111 code indicating lost communication with the steering control system in a GMC vehicle?

- Possible causes include wiring or connection issues between the steering control module and other vehicle systems, a faulty steering control module, or a communication network failure.

3. How can I diagnose the U2111 code in my GMC vehicle?

- Diagnosis typically involves checking the wiring and connections related to the steering control system, testing the steering control module for faults, and using a diagnostic scanner to retrieve specific trouble codes and data.

4. What are some repair tips for resolving the U2111 code related to lost communication with the steering control system?

- Repair tips may include repairing or replacing damaged wiring, ensuring all connections are secure, reprogramming or replacing the steering control module, and performing a network communication test.

5. Is it safe to drive my GMC vehicle with the U2111 code present?

- It is not recommended to drive the vehicle with the U2111 code active, especially if you are experiencing steering-related symptoms. It's best to address the issue promptly to ensure safe operation of the vehicle.

6. Can I reset the U2111 trouble code in my GMC vehicle myself?

- While you can clear the trouble code with a diagnostic scanner, it's important to address the root cause of the issue to prevent the code from reoccurring. Simply clearing the code without fixing the underlying problem may lead to more serious issues.

7. How much does it typically cost to repair the U2111 code related to lost communication with the steering control system in a GMC vehicle?

- The cost of repair can vary depending on the specific cause of the issue, the required parts, and labor costs. It's recommended to consult with a professional mechanic for an accurate estimate based on your vehicle's condition.

8. Are there any recalls or technical service bulletins (TSBs) related to the U2111 code in GMC vehicles?

- It's advisable to check with a GMC dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls or TSBs related to the U2111 trouble code in your specific GMC model.

9. What steps can I take to prevent the U2111 trouble code from occurring in the future?

- Regularly inspecting the wiring and connections in the steering control system, following the manufacturer's maintenance schedule, and addressing any warning lights or symptoms promptly can help prevent the U2111 trouble code from reoccurring.

10. Is the U2111 code specific to GMC vehicles, or can it occur in other makes and models?

- The U2111 trouble code indicating lost communication with the steering control system is not exclusive to GMC vehicles and can potentially occur in other vehicle makes and models equipped with similar systems.