AutoCodes – Hummer – C0249 Hummer

C0249 Hummer Code - Left Normal Force Error

Quick Answer

The Electronic Brake Control Module (EBCM) receives invalid information from other modules through the General Motor Local Area Network (GMLAN) serial data bus. Common causes include This is an information code only, check other codes. 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: C0249 Hummer indicates Left Normal Force Error.
Common causes: Common causes include This is an information code only, check other codes.
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 1,552

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 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0249 Hummer Description

The Electronic Brake Control Module (EBCM) receives invalid information from other modules through the General Motor Local Area Network (GMLAN) serial data bus. The EBCM will set DTC based on this information. This Diagnostic Trouble Code (DTC) is for information only. As an aid to the technician, this DTC indicates that there are no problems in the ABS.

OBDII Code C0249 Hummer - Left Normal Force Error - AutoCodes.com — C0249 Hummer Code - Left Normal Force Error

What does this mean?

What are the Possible Causes of the DTC C0249 Hummer?

This is an information code only, check other codes.

How to Fix the DTC C0249 Hummer?

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 C0249 Hummer 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 C0249 Hummer code?

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Need Help with the Code?

Get the C0249 Hummer 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 C0249 Hummer Code

1. What are the common symptoms of OBDII code C0249 (Left Normal Force Error) in a Hummer?

The common symptoms include the Service Stability message displayed on the dashboard, stability issues while driving, and potential traction control system malfunctions.

2. What can cause the OBDII code C0249 (Left Normal Force Error) to appear in a Hummer?

The code can be triggered by issues with the left front wheel speed sensor, faulty wiring or connections related to the sensor, or problems with the Electronic Brake Control Module (EBCM).

3. How can I diagnose the OBDII code C0249 (Left Normal Force Error) in my Hummer?

Diagnosis involves using an OBDII scanner to retrieve the specific trouble code, inspecting the left front wheel speed sensor and its connections, and checking for any visible signs of damage or corrosion.

4. What repairs may be needed to fix the OBDII code C0249 (Left Normal Force Error) in a Hummer?

Potential repairs include replacing the left front wheel speed sensor, repairing any damaged wiring or connections, or reprogramming the EBCM to address the issue.

5. Can I drive my Hummer with the OBDII code C0249 (Left Normal Force Error) present?

It is not recommended to drive your vehicle with this error code present, as it can affect the stability and traction control systems, potentially compromising the safety of the vehicle.

6. How urgent is it to address the OBDII code C0249 (Left Normal Force Error) in a Hummer?

It is important to address this code promptly to ensure the proper functioning of the stability and traction control systems in your vehicle and maintain safe driving conditions.

7. Is it possible to reset the OBDII code C0249 (Left Normal Force Error) in a Hummer without making any repairs?

While clearing the code may temporarily turn off the warning light, it is crucial to diagnose and repair the underlying issue to prevent the code from reappearing and potentially causing safety concerns.

8. Can a DIY enthusiast fix the OBDII code C0249 (Left Normal Force Error) in a Hummer?

Depending on your skills and experience with automotive repairs, you may be able to address this code yourself by following repair guides and using the necessary tools and equipment.

9. How much does it typically cost to repair the OBDII code C0249 (Left Normal Force Error) in a Hummer?

The cost of repairs can vary based on the specific cause of the code, but it may involve expenses such as parts replacement, labor costs, and potential diagnostic fees from a professional mechanic.

10. Are there any preventive measures to avoid the OBDII code C0249 (Left Normal Force Error) in a Hummer?

Regular maintenance, such as checking the condition of wheel speed sensors and related components, can help prevent issues that may trigger this error code and ensure the proper functioning of the vehicle's safety systems.