TCS light on, transmission related issue

2013 CHEVROLET SONIC

105,000 MILES • 4 CYL • 2WD • AUTOMATIC

KENRICK.WAGNER211

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I had an almost new tire patched today. No problems driving home. No problems driving my fiancé to work. Shortly thereafter, however, my TCS light came on and off intermittently (not blinking). I also noticed starting almost simultaneously the transmission would gear up much more quickly than usual until it was comfortable in the 3rd-going to 4th gear. I’ve tried turning it off and starting it back up but if I sit there for a couple minutes that dang TCS light comes on eventually. Ideas?

Oct 31, 2020 at 5:03 PM

JACOBANDNICKOLAS

CERTIFIED EXPERT
110,175 POSTS

Hi,

Most times, the TCS is affected by a wheel speed sensor (ABS). Where is what I suggest first. We need to check for diagnostic trouble codes. They should point us in the right direction.

Here is a video showing how it's done:

https://youtu.be/InIlnsjOVFA

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If you are unable to do that, then I would suggest testing each of the wheel speed sensors. All you will need is a voltmeter or multimeter. Here is a link that shows how it's done:

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.https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

I attached a pic below showing where the sensors are located.

Let me know if this helps or if you have other questions.

Take care,
Joe

Image (Click to enlarge)

Oct 31, 2020 at 8:21 PM