Traction control light

Hello,

This is a common problem it most likely means the throttle bore needs to be serviced here is a guide to help fix the problem.

https://www.2carpros.com/articles/throttle-actuator-service

Please run down this guide and report back.

Unfortunately I need the exact code numbers not code descriptions? You need to have the computer scanned for codes. That is the starting point, that is the first thing I would do if I had the car in front of me.

Hi CEAUX ,

If you decide you would like to conduct the scan yourself here is a link to an article that features written step by step instructions and pictures explaining how to do the scan yourself, also I have included a link to our YouTube channel with a how to video on code scanning.

This is applicable even if your check engine light is not on.

Most scanners are inexpensive to purchase, you can purchase one online from sites like Amazon.com

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://youtu.be/YV3TRZwer8k

Once you have the codes please get back to us so that we can further assist you. We are always happy to help.

Thank you for visiting 2CarPros.com.

Kindest regards,
Renee
Admin

The most likely cause is a front wheel bearing assembly. GM has been having a huge problem with them for many years. Due to the design, the wheel speed sensors don't generate much of a signal to start with, and in as little as 15,000 miles the wheel bearing can develop normal play that would go unnoticed on any other car brand but on yours that causes the signal to drop so low that the computer can't read it. That makes it look like that wheel is going slower than the others so the traction control kicks in to slow the other one down that it thinks is spinning.

On any other brand you replace only the wheel speed sensor when it fails. GM likes to build their cars with large assemblies to cut down on labor cost and time on the assembly line. That means you get to buy the wheel speed sensor AND the wheel bearing whenever you need either one of them.

To verify the bearing / sensor is the cause of the problem, your mechanic will perform a test drive with a scanner that lets him view live data. He will be able to see the speeds being reported by all the wheel speed sensors when the false activation occurs.

The engine check light is indicating that there is a set fault code in the ECU, you will require a scan to read this code, post what code is read hear for further assistance.

Mark (mhpautos)

I would check the ignition module, as they tend to take on moisture and cause these problems

Yes, I agree with mark, if there is a check engine light on or even if its not on anymore, there should be a code stored and would be the best thing to do to help diagnose this problem
joe