Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I drive a 2006 Cobalt SS (not supercharged) with the 2.4L engine.

In the last month or so the traction control light has been coming on periodically. Turning the engine off and back on causes the light to go off. While the light is on I notice that when the car shifts gears (it's automatic, as you might have guessed) it does it quite a bit harder than normal.

Any ideas as to what may be the problem?

share|improve this question
Any check engine light? Have you tried turning off the traction control? The instructions to do this are in the owners manual. – mikes Aug 12 '12 at 22:29

TCS systems are pretty simple, generally. They basically use all the same hardware as the ABS system, so one probable fault would be a bad wheel speed sensor.

I'm struggling to think of anything to tie the TCS fault together with the hard shifting...

share|improve this answer
Vehicle speed sensor? – mikes Aug 14 '12 at 19:28

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.