AutoCodes – GMC – U0236 GMC

U0236 GMC Code - Lost Communication With Steering Column Lock 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 Steering Column Lock Module, Steering Column Lock Module harness is open or shorted, Steering Column Lock 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
U0236 GMC indicates Lost Communication With Steering Column Lock Module.
Common causes
Common causes include Faulty Steering Column Lock Module, Steering Column Lock Module harness is open or shorted, Steering Column Lock 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 613
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 U0236 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 Steering Column Lock Module has not been received.
OBDII Code U0236 GMC - Lost Communication With Steering Column Lock Module - AutoCodes.com
U0236 GMC Code - Lost Communication With Steering Column Lock Module

What are the Possible Causes of the DTC U0236 GMC?

  • Faulty Steering Column Lock Module
  • Steering Column Lock Module harness is open or shorted
  • Steering Column Lock Module circuit poor electrical connection

How to Fix the DTC U0236 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 U0236 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 U0236 GMC code?

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Need Help with the 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 U0236 GMC Code

1. What are the common symptoms of OBDII code U0236 in a GMC related to the Steering Column Lock Module?

The common symptoms include the inability to start the vehicle, the steering wheel locking mechanism not engaging or disengaging properly, and the illumination of the security light on the dashboard.

2. What are some possible causes of the U0236 code indicating a lost communication with the Steering Column Lock Module in a GMC?

Possible causes include a faulty steering column lock module, damaged wiring or connectors in the steering column, a blown fuse related to the steering column system, or a communication error within the vehicle's network.

3. How can I diagnose the U0236 code in my GMC related to the Steering Column Lock Module?

Diagnosis typically involves using a professional OBDII scanner to retrieve the specific code, checking for any related trouble codes, inspecting the wiring and connectors in the steering column area, and testing the steering column lock module for proper functionality.

4. What are the recommended repair tips for resolving the U0236 code in a GMC due to a lost communication with the Steering Column Lock Module?

Repair tips may include repairing or replacing damaged wiring or connectors, replacing the faulty steering column lock module, resetting the system using a professional diagnostic tool, and ensuring all related fuses are intact.

5. Can the U0236 code related to the Steering Column Lock Module in a GMC be fixed without professional help?

While some basic troubleshooting steps can be taken by DIY enthusiasts, resolving the U0236 code often requires specialized diagnostic tools and professional expertise due to the complexity of the vehicle's electrical system.

6. Are there any safety concerns associated with the U0236 code indicating a lost communication with the Steering Column Lock Module in a GMC?

Yes, if the steering column lock module is malfunctioning, it could potentially lead to a situation where the steering wheel becomes difficult to turn or locks in place unexpectedly, posing a safety hazard while driving.

7. How much does it typically cost to repair the U0236 code in a GMC related to the Steering Column Lock Module?

The cost of repair can vary depending on the specific underlying issue causing the code, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to obtain multiple quotes for an accurate estimate.

8. Can ignoring the U0236 code related to the Steering Column Lock Module in a GMC lead to further damage or problems?

Ignoring the U0236 code could potentially lead to more severe steering column issues, further electrical system malfunctions, or even complete immobilization of the vehicle if the steering column lock fails completely.

9. Is it safe to drive my GMC with the U0236 code indicating a lost communication with the Steering Column Lock Module?

It is not recommended to drive the vehicle with the U0236 code present, as it may pose safety risks due to potential steering column malfunctions. It is best to have the issue diagnosed and repaired promptly.

10. How long does it usually take to repair the U0236 code related to the Steering Column Lock Module in a GMC?

The repair time can vary depending on the exact cause of the issue, the availability of replacement parts, and the workload of the repair shop. In some cases, it may be resolved within a few hours, while more complex repairs could take longer.

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